阅读说明：本技术 一种有效改善人造大理石渣粉与胶凝材料混合物流动度的外加剂及其制备方法与使用方法 (Additive for effectively improving fluidity of mixture of slag powder of artificial marble and cementing material, preparation method and use method thereof ) 是由 庄永卿 刘明旺 徐祖睿 傅人道 张桃 陈亮丹 沙马什布 李海 于 2021-01-15 设计创作，主要内容包括：一种有效改善人造大理石渣粉与胶凝材料混合物流动度的外加剂,所述外加剂包括按重量份计的以下组分：60-70重量份的聚乙二醇、20-30重量份的失水山梨醇脂肪酸酯以及10-20重量份的羟基乙叉二膦酸。本发明还公开了一种有效改善人造大理石渣粉与胶凝材料混合物流动度的外加剂的制备方法和使用方法。本发明可克服由人造大理石废渣中的不饱和聚酯所引起的人造大理石渣粉与胶凝材料混合物流动度严重减小的问题。这大大提高了人造大理石废渣的利用率,使得更多的人造大理石废渣得到有效的利用,变废为宝。这有利于改善石粉废渣对环境的污染问题,促进绿色经济的发展,实现可持续发展。(An additive for effectively improving fluidity of a mixture of slag powder of artificial marble and a cementing material, which comprises the following components in parts by weight: 60-70 parts of polyethylene glycol, 20-30 parts of sorbitan fatty acid ester and 10-20 parts of hydroxyethylidene diphosphonic acid. The invention also discloses a preparation method and a use method of the additive for effectively improving the fluidity of the mixture of the slag powder of the artificial marble and the cementing material. The present invention can overcome the problem of severely reducing the fluidity of the mixture of the slag powder of the artificial marble and the cement material caused by the unsaturated polyester in the slag of the artificial marble. This greatly improves the utilization rate of the waste residue of the artificial marble, effectively utilizes more waste residue of the artificial marble and changes waste into valuable. The method is favorable for improving the problem of environmental pollution caused by stone powder waste residues, promotes the development of green economy and realizes sustainable development.)

1. An additive for effectively improving fluidity of a mixture of slag powder of artificial marble and a cementing material is characterized in that: the additive comprises the following components in parts by weight:

60-70 parts of polyethylene glycol;

20-30 parts of sorbitan fatty acid ester;

10-20 parts of hydroxyethylidene diphosphonic acid.

2. The admixture for improving fluidity of a mixture of slag powder of artificial marble and a binding material according to claim 1, wherein:

the molecular weight of the polyethylene glycol is 300-10000, and the density of the polyethylene glycol is 1.27g/cm³N of the polyethylene glycol is 5-20;

the sorbitan fatty acid ester has a solid content of greater than 98 wt%;

the purity of the hydroxyethylidene diphosphonic acid is analytical grade purity, the density of the hydroxyethylidene diphosphonic acid is 1.45 (60% aq.), the melting point of the hydroxyethylidene diphosphonic acid is 198-199 ℃, and the active component of the hydroxyethylidene diphosphonic acid calculated by HEDP is not less than 50.0%.

3. A preparation method of an additive for effectively improving fluidity of a mixture of slag powder of artificial marble and a cementing material is characterized by comprising the following steps: the method comprises the following steps:

s1: 60-70 parts by weight of polyethylene glycol, 20-30 parts by weight of sorbitan fatty acid ester and 10-20 parts by weight of hydroxyethylidene diphosphonic acid are respectively weighed according to the parts by weight.

S2: and carrying out hydrothermal reaction, filtering, drying and grinding on the polyethylene glycol, the sorbitan fatty acid ester and the hydroxyethylidene diphosphonic acid to obtain the additive.

4. The method for preparing an additive for effectively improving fluidity of a mixture of slag powder of artificial marble and a binding material according to claim 3, wherein:

the molecular weight of the polyethylene glycol is 300-10000, and the density of the polyethylene glycol is 1.27g/cm³N of the polyethylene glycol is 5-20;

the sorbitan fatty acid ester has a solid content of greater than 98 wt%;

the purity of the hydroxyethylidene diphosphonic acid is analytical grade purity, the density of the hydroxyethylidene diphosphonic acid is 1.45 (60% aq.), the melting point of the hydroxyethylidene diphosphonic acid is 198-199 ℃, and the active component of the hydroxyethylidene diphosphonic acid calculated by HEDP is not less than 50.0%.

5. The method for preparing an additive effective for improving fluidity of a mixture of slag powder of artificial marble and a cement according to claim 3 or 4, wherein: the particle size of the grinded particles of the admixture is not more than 10 μm.

6. The use method of an additive for improving fluidity of a mixture of artificial marble slag powder and a cementitious material, to which the additive for improving fluidity of a mixture of artificial marble slag powder and a cementitious material according to claim 1 or 2 is applied, characterized in that: the method comprises the following steps:

s1: obtaining waste residues of the artificial marble;

s2: crushing the artificial marble waste residue to obtain artificial marble powder;

s3: adding a cementing material into the artificial marble powder and uniformly mixing;

s4: and adding a certain amount of polycarboxylic acid water reducer, additive and water into the artificial marble powder and the cementing material, and mixing and stirring.

7. The use method of the additive for improving fluidity of mixture of slag powder of artificial marble and cement as claimed in claim 6, wherein: the cementing material is cement.

8. The method for using the additive for improving fluidity of mixture of slag powder of artificial marble and cement as claimed in claim 7, wherein: the water-cement ratio of the water to the cement is 0.29-0.35; the water reducing rate of the polycarboxylate superplasticizer is not less than 14 percent, and the polycarboxylate superplasticizer accounts for 0.08-0.12 part by weight; the additive accounts for 0.5-1.0 part by weight; 10-35 parts of artificial marble powder and 65-90 parts of cement.

9. The use method of the additive for improving fluidity of mixture of slag powder of artificial marble and cement as claimed in claim 6, wherein: the step S1 includes the following sub-steps:

s101: extracting concentrated artificial marble waste slurry from a sedimentation tank of an artificial marble processing factory;

s102: and continuously drying the concentrated artificial marble waste slurry at the temperature of 100-105 ℃ for 2-3 hours to obtain the artificial marble waste residue.

10. The use method of the additive for improving fluidity of mixture of slag powder of artificial marble and cement as claimed in claim 6, wherein: the mass fraction of particles with a particle size of more than 45 μm in the artificial marble waste is less than 25 wt%, the artificial marble waste is pulverized for 5-10 minutes by using a ball mill in step S2, and the mixing operation is performed by using a material mixing and stirring machine in step S3.

Technical Field

The invention belongs to the field of solid waste resource utilization, and particularly relates to an additive for effectively improving fluidity of a mixture of artificial marble slag powder and a cementing material, a preparation method and a use method thereof.

Background

Due to the promotion of market demand, the annual output growth rate of the Chinese stone is kept about 10-15%, the annual output of the Chinese stone in 2014 is 0.43 hundred million tons, which accounts for about 42% of the total world output, and the Chinese stone market becomes indispensable medium-strength in the international stone market. The rapid development of the annual output of stone materials is accompanied by a plurality of problems, such as mountain destruction, environmental pollution, waste pollution and the like, and particularly the problem of pollution caused by stone processing waste materials is more prominent. About 859 million tons of stone dust waste materials are generated in the stone processing industry of China every year, and account for 31.4 percent of the total amount of the whole world. Wherein the waste slurry accounts for 20-30% of the weight of the stone processing waste, the water content of the waste slurry is about 50%, and the rest is stone powder.

In the congratulation state city adjacent to the bay area of Guangdong, hong Kong and Australia, the mineral resources such as marble, limestone, granite and the like are abundant. In 2018, the Hezhou city has the processing capacity of producing 850 million tons of heavy calcium carbonate powder annually, and the national occupancy of the product is 35 percent; artificial granite enterpriseAnd 28 families are built, 53 production lines are built, and the annual capacity of the artificial granite is more than 6000 ten thousand square meters. However, the development of marble industry brings great contribution to local economic society and a series of environmental pollution problems such as waste slag and waste slurry. It is known that marble enterprises in Zhongshan and Wangao produced about 2000m each day³The marble processing waste, how to stack and treat the marble waste (containing artificial marble waste) has become a problem which needs to be solved urgently in the state of the company.

At present, the main domestic approaches to artificial marble waste treatment are used for producing industrial bricks, filling agents of natural rubber composite materials, doping materials for producing cement and concrete, and the like. These methods are advantageous in some degree in the utilization of the artificial marble wastes, but the inclusion of unsaturated polyester in the artificial marble wastes seriously affects the fluidity of the mixture of the slag powder of the artificial marble and the cement and the slump of concrete, thereby affecting the utilization rate of the slag of the artificial marble. In order to better develop green economy, the sustainable development of solid waste utilization is realized in a larger way, and meanwhile, in order to improve ecological environment, more artificial marble waste residues need to be recycled better.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provide an additive for effectively improving the fluidity of a mixture of artificial marble slag powder and a cementing material, and a preparation method and a using method thereof, and solve the problem of serious reduction of the fluidity of the mixture of the artificial marble slag powder and the cementing material caused by unsaturated polyester in the artificial marble slag.

The purpose of the invention is realized by the following technical scheme:

an additive for effectively improving fluidity of a mixture of slag powder of artificial marble and a cementing material, which comprises the following components in parts by weight:

60-70 parts of polyethylene glycol;

20-30 parts of sorbitan fatty acid ester;

10-20 parts of hydroxyethylidene diphosphonic acid.

Further, the molecular weight of the polyethylene glycol is 300-10000, and the density of the polyethylene glycol is 1.27g/cm³N of the polyethylene glycol is 5-20;

the sorbitan fatty acid ester has a solid content of greater than 98 wt%;

the purity of the hydroxyethylidene diphosphonic acid is analytical grade purity, the density of the hydroxyethylidene diphosphonic acid is 1.45 (60% aq.), the melting point of the hydroxyethylidene diphosphonic acid is 198-199 ℃, and the active component of the hydroxyethylidene diphosphonic acid calculated by HEDP is not less than 50.0%.

A preparation method of an additive for effectively improving fluidity of a mixture of slag powder of artificial marble and a cementing material comprises the following steps:

s1: 60-70 parts by weight of polyethylene glycol, 20-30 parts by weight of sorbitan fatty acid ester and 10-20 parts by weight of hydroxyethylidene diphosphonic acid are respectively weighed according to the parts by weight.

S2: and carrying out hydrothermal reaction, filtering, drying and grinding on the polyethylene glycol, the sorbitan fatty acid ester and the hydroxyethylidene diphosphonic acid to obtain the additive.

Further, the molecular weight of the polyethylene glycol is 300-10000, and the density of the polyethylene glycol is 1.27g/cm³N of the polyethylene glycol is 5-20;

the sorbitan fatty acid ester has a solid content of greater than 98 wt%;

the purity of the hydroxyethylidene diphosphonic acid is analytical grade purity, the density of the hydroxyethylidene diphosphonic acid is 1.45 (60% aq.), the melting point of the hydroxyethylidene diphosphonic acid is 198-199 ℃, and the active component of the hydroxyethylidene diphosphonic acid calculated by HEDP is not less than 50.0%.

Further, the particle size of the grinded particles of the admixture is not more than 10 μm.

The use method of the additive for effectively improving the fluidity of the mixture of the artificial marble slag powder and the cementing material by applying the additive for effectively improving the fluidity of the mixture of the artificial marble slag powder and the cementing material comprises the following steps:

s1: obtaining waste residues of the artificial marble;

s2: crushing the artificial marble waste residue to obtain artificial marble powder;

s3: adding a cementing material into the artificial marble powder and uniformly mixing;

s4: and adding a certain amount of polycarboxylic acid water reducer, additive and water into the artificial marble powder and the cementing material, and mixing and stirring.

Further, the cementing material is cement.

Further, the water cement ratio of the water to the cement is 0.29-0.35; the water reducing rate of the polycarboxylate superplasticizer is not less than 14 percent, and the polycarboxylate superplasticizer accounts for 0.08-0.12 part by weight; the additive accounts for 0.5-1.0 part by weight; 10-35 parts of artificial marble powder and 65-90 parts of cement.

Further, the step S1 includes the following sub-steps:

s101: extracting concentrated artificial marble waste slurry from a sedimentation tank of an artificial marble processing factory;

s102: and continuously drying the concentrated artificial marble waste slurry at the temperature of 100-105 ℃ for 2-3 hours to obtain the artificial marble waste residue.

Further, the mass fraction of particles having a particle size of greater than 45 μm in the artificial marble waste is less than 25 wt%, the artificial marble waste is pulverized for 5-10 minutes using a ball mill in step S2, and the mixing operation is performed using a material mixer in step S3.

The invention has the beneficial effects that:

the present invention can overcome the problem of severely reducing the fluidity of the mixture of the slag powder of the artificial marble and the cement material caused by the unsaturated polyester in the slag of the artificial marble. This greatly improves the utilization rate of the waste residue of the artificial marble, effectively utilizes more waste residue of the artificial marble and changes waste into valuable. The method is favorable for improving the problem of environmental pollution caused by stone powder waste residues, promotes the development of green economy and realizes sustainable development.

Drawings

Fig. 1 is a flow chart illustrating a method for using an additive effective for improving fluidity of a mixture of slag powder of artificial marble and a cement.

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention, and the components related to the present invention are only shown in the drawings rather than drawn according to the number, shape and size of the components in actual implementation, and the type, quantity and proportion of the components in actual implementation may be changed freely, and the layout of the components may be more complicated.

The first embodiment is as follows:

as shown in fig. 1, an additive effective for improving fluidity of a mixture of slag powder of artificial marble and a cementitious material comprises the following components in parts by weight:

60 parts of polyethylene glycol;

20 parts by weight of sorbitan fatty acid ester;

10 parts of hydroxyethylidene diphosphonic acid.

The synergistic effect of the three components is improved by optimizing the optimal mixture ratio.

Preferably, the molecular weight of the polyethylene glycol is 300, and the density of the polyethylene glycol is 1.27g/cm³N of the polyethylene glycol is 5;

the sorbitan fatty acid ester has a solid content of greater than 98 wt%;

the purity of the hydroxyethylidene diphosphonic acid is analytical grade purity, the density of the hydroxyethylidene diphosphonic acid is 1.45 (60% aq.), the melting point of the hydroxyethylidene diphosphonic acid is 198 ℃, and the active component of the hydroxyethylidene diphosphonic acid calculated by HEDP is 50.0%.

A preparation method of an additive for effectively improving fluidity of a mixture of slag powder of artificial marble and a cementing material comprises the following steps:

s1: 60 parts by weight of polyethylene glycol, 20 parts by weight of sorbitan fatty acid ester and 10 parts by weight of hydroxyethylidene diphosphonic acid are weighed respectively according to the parts by weight.

S2: and carrying out hydrothermal reaction, filtering, drying and grinding on the polyethylene glycol, the sorbitan fatty acid ester and the hydroxyethylidene diphosphonic acid to obtain the additive.

Preferably, the molecular weight of the polyethylene glycol is 300, and the density of the polyethylene glycol is 1.27g/cm³N of the polyethylene glycol is 5;

the sorbitan fatty acid ester has a solid content of greater than 98 wt%;

the purity of the hydroxyethylidene diphosphonic acid is analytical grade purity, the density of the hydroxyethylidene diphosphonic acid is 1.45 (60% aq.), the melting point of the hydroxyethylidene diphosphonic acid is 198 ℃, and the active component of the hydroxyethylidene diphosphonic acid calculated by HEDP is 50.0%.

Preferably, the particle size of the ground particles of the admixture is not more than 10 μm.

The use method of the additive for effectively improving the fluidity of the mixture of the artificial marble slag powder and the cementing material by applying the additive for effectively improving the fluidity of the mixture of the artificial marble slag powder and the cementing material comprises the following steps:

s1: obtaining waste residues of the artificial marble;

s2: crushing the artificial marble waste residue to obtain artificial marble powder;

s3: adding a cementing material into the artificial marble powder and uniformly mixing, wherein the cementing material is cement;

s4: and adding a certain amount of polycarboxylic acid water reducer, an additive and water into the artificial marble powder and the cement, and mixing and stirring to obtain the cement paste.

And (4) after the cement paste is smeared or used in other building constructions, maintaining at normal temperature. .

Preferably, the water-cement ratio of the water to the cement is 0.29; the water reducing rate of the polycarboxylate superplasticizer is 14%, and the polycarboxylate superplasticizer is 0.08 part by weight; the additive is 0.5 part by weight; the artificial marble powder is 10 parts by weight, and the cement is 65 parts by weight.

Preferably, the step S1 includes the following sub-steps:

s101: extracting concentrated artificial marble waste slurry from a sedimentation tank of an artificial marble processing factory;

s102: and placing the concentrated artificial marble waste slurry into a dryer to be dried continuously for 3 hours at the temperature of 100 ℃ to obtain the artificial marble waste residue.

Preferably, the mass fraction of particles having a particle size of greater than 45 μm in the artificial marble waste is less than 25 wt%, the artificial marble waste is pulverized for 5 minutes using a ball mill in step S2, and the mixing operation is performed using a mixer-blender in step S3.

By means of the additive, the problem of seriously reduced fluidity of the mixture of the artificial marble slag powder and the cementing material caused by unsaturated polyester in the artificial marble slag is solved. This greatly improves the utilization rate of the waste residue of the artificial marble, effectively utilizes more waste residue of the artificial marble and changes waste into valuable. The method is favorable for improving the problem of environmental pollution caused by stone powder waste residues, promotes the development of green economy and realizes sustainable development.

Example two:

as shown in fig. 1, an additive effective for improving fluidity of a mixture of slag powder of artificial marble and a cementitious material comprises the following components in parts by weight:

70 parts of polyethylene glycol;

30 parts by weight of sorbitan fatty acid ester;

20 parts of hydroxyethylidene diphosphonic acid.

Preferably, the molecular weight of the polyethylene glycol is 10000, and the density of the polyethylene glycol is 1.27g/cm³Said polyethylene diN of the alcohol is 20;

the solid content of the sorbitan fatty acid ester is 99 wt%;

the purity of the hydroxyethylidene diphosphonic acid is analytical grade purity, the density of the hydroxyethylidene diphosphonic acid is 1.45 (60% aq.), the melting point of the hydroxyethylidene diphosphonic acid is 199 ℃, and the active component of the hydroxyethylidene diphosphonic acid calculated by HEDP is 60.0%.

A preparation method of an additive for effectively improving fluidity of a mixture of slag powder of artificial marble and a cementing material comprises the following steps:

s1: 70 parts by weight of polyethylene glycol, 30 parts by weight of sorbitan fatty acid ester and 20 parts by weight of hydroxyethylidene diphosphonic acid are weighed respectively according to the parts by weight.

S2: and carrying out hydrothermal reaction, filtering, drying and grinding on the polyethylene glycol, the sorbitan fatty acid ester and the hydroxyethylidene diphosphonic acid to obtain the additive.

Preferably, the molecular weight of the polyethylene glycol is 10000, and the density of the polyethylene glycol is 1.27g/cm³N of the polyethylene glycol is 20;

the solid content of the sorbitan fatty acid ester is 99 wt%;

the purity of the hydroxyethylidene diphosphonic acid is analytical grade purity, the density of the hydroxyethylidene diphosphonic acid is 1.45 (60% aq.), the melting point of the hydroxyethylidene diphosphonic acid is 199 ℃, and the active component of the hydroxyethylidene diphosphonic acid calculated by HEDP is 60.0%.

Preferably, the particle size of the ground particles of the admixture is not more than 10 μm.

The use method of the additive for effectively improving the fluidity of the mixture of the artificial marble slag powder and the cementing material by applying the additive for effectively improving the fluidity of the mixture of the artificial marble slag powder and the cementing material comprises the following steps:

s1: obtaining waste residues of the artificial marble;

s2: crushing the artificial marble waste residue to obtain artificial marble powder;

s3: adding a cementing material into the artificial marble powder and uniformly mixing, wherein the cementing material is cement;

s4: and adding a certain amount of polycarboxylic acid water reducer, an additive and water into the artificial marble powder and the cement, and mixing and stirring to obtain the cement paste.

And (4) after the cement paste is smeared or used in other building constructions, maintaining at normal temperature. .

Preferably, the water-cement ratio of the water to the cement is 0.35; the water reducing rate of the polycarboxylate superplasticizer is 18 percent, and the polycarboxylate superplasticizer is 0.12 part by weight; the additive accounts for 1.0 part by weight; the artificial marble powder is 35 parts by weight, and the cement is 90 parts by weight.

Preferably, the step S1 includes the following sub-steps:

s101: extracting concentrated artificial marble waste slurry from a sedimentation tank of an artificial marble processing factory;

s102: and (3) placing the concentrated artificial marble waste slurry into a dryer to be dried continuously for 2 hours at 105 ℃ to obtain the artificial marble waste residue.

Preferably, the mass fraction of particles having a particle size of greater than 45 μm in the artificial marble waste is 24 wt%, the artificial marble waste is pulverized for 10 minutes using a ball mill in step S2, and the mixing operation is performed using a mixer-blender in step S3.

Example three:

as shown in fig. 1, an additive effective for improving fluidity of a mixture of slag powder of artificial marble and a cementitious material comprises the following components in parts by weight:

65 parts of polyethylene glycol;

25 parts by weight of sorbitan fatty acid ester;

15 parts of hydroxyethylidene diphosphonic acid.

Preferably, the molecular weight of the polyethylene glycol is 5000, and the density of the polyethylene glycol is 1.27g/cm³N of the polyethylene glycol is 18;

the sorbitan fatty acid ester has a solid content of 98.5 wt%;

the purity of the hydroxyethylidene diphosphonic acid is analytical grade purity, the density of the hydroxyethylidene diphosphonic acid is 1.45 (60% aq.), the melting point of the hydroxyethylidene diphosphonic acid is 198.5 ℃, and the active component of the hydroxyethylidene diphosphonic acid calculated by HEDP is 80.0%.

A preparation method of an additive for effectively improving fluidity of a mixture of slag powder of artificial marble and a cementing material comprises the following steps:

s1: weighing 65 parts by weight of polyethylene glycol, 25 parts by weight of sorbitan fatty acid ester and 15 parts by weight of hydroxyethylidene diphosphonic acid respectively.

S2: and carrying out hydrothermal reaction, filtering, drying and grinding on the polyethylene glycol, the sorbitan fatty acid ester and the hydroxyethylidene diphosphonic acid to obtain the additive.

Preferably, the molecular weight of the polyethylene glycol is 5000, and the density of the polyethylene glycol is 1.27g/cm³N of the polyethylene glycol is 15;

the sorbitan fatty acid ester has a solid content of 98.5 wt%;

the purity of the hydroxyethylidene diphosphonic acid is analytical grade purity, the density of the hydroxyethylidene diphosphonic acid is 1.45 (60% aq.), the melting point of the hydroxyethylidene diphosphonic acid is 198.5 ℃, and the active component of the hydroxyethylidene diphosphonic acid calculated by HEDP is 80.0%.

Preferably, the particle size of the ground particles of the admixture is not more than 10 μm.

Example four

A control test comprising the steps of:

s1: obtaining waste residues of the artificial marble;

s101: extracting concentrated artificial marble waste slurry from a sedimentation tank of an artificial marble processing factory;

s102: placing the concentrated artificial marble waste slurry into a dryer to be dried continuously for 3 hours at 105 ℃ to obtain massive artificial marble waste residues;

s2: crushing the dried blocky artificial marble waste residue for 10 minutes by using a ball mill to obtain artificial marble powder;

s3: adding 90 parts by weight of cement into 10 parts by weight of the artificial marble powder, and mixing and stirring uniformly by using a mixing stirrer;

s4: adding 0.10 part by weight of polycarboxylic acid water reducing agent into the artificial marble powder and the cement, adding water according to the water-cement ratio of 0.29, and mixing and stirring in a JJ-5 type cement paste mixer to obtain the cement paste.

S5: pouring the stirred cement paste into a conical metal mould with the upper caliber of 36mm, the lower caliber of 60mm and the height of 60mm, which is arranged on a smooth and moist glass plate, floating the cement paste at the upper opening of the mould, vertically lifting the mould at a constant speed and timing for 30 seconds, finally measuring the vertical and horizontal diameters of the spread cement paste, and taking the average value as the fluidity of the cement paste.

Example five:

a control test comprising the steps of:

s1: obtaining waste residues of the artificial marble;

s101: extracting concentrated artificial marble waste slurry from a sedimentation tank of an artificial marble processing factory;

s102: placing the concentrated artificial marble waste slurry into a dryer to be dried continuously for 3 hours at 105 ℃ to obtain massive artificial marble waste residues;

s2: crushing the dried blocky artificial marble waste residue for 10 minutes by using a ball mill to obtain artificial marble powder;

s3: adding 90 parts by weight of cement into 10 parts by weight of the artificial marble powder, and mixing and stirring uniformly by using a mixing stirrer;

s4: 1.0 part by weight of the admixture of example three was added to the artificial marble powder and cement, and water was added in a water-cement ratio of 0.29, and mixed and stirred in a JJ-5 type cement paste mixer to obtain a cement paste.

S5: pouring the stirred cement paste into a conical metal mould with the upper caliber of 36mm, the lower caliber of 60mm and the height of 60mm, which is arranged on a smooth and moist glass plate, floating the cement paste at the upper opening of the mould, vertically lifting the mould at a constant speed and timing for 30 seconds, finally measuring the vertical and horizontal diameters of the spread cement paste, and taking the average value as the fluidity of the cement paste.

Example six:

the use method of the additive for effectively improving the fluidity of the mixture of the slag powder of the artificial marble and the cementitious material, which is the additive of the third application example, comprises the following steps:

s1: obtaining waste residues of the artificial marble;

s101: extracting concentrated artificial marble waste slurry from a sedimentation tank of an artificial marble processing factory;

s102: placing the concentrated artificial marble waste slurry into a dryer to be dried continuously for 3 hours at 105 ℃ to obtain massive artificial marble waste residues;

s2: crushing the dried blocky artificial marble waste residue for 10 minutes by using a ball mill to obtain artificial marble powder;

s3: adding 90 parts by weight of cement into 10 parts by weight of the artificial marble powder, and mixing and stirring uniformly by using a mixing stirrer;

s4: 0.10 parts by weight of polycarboxylic acid water reducing agent and 1.0 part by weight of the admixture of example three are added to the artificial marble powder and cement, and water is added according to the water-cement ratio of 0.29, and the mixture is mixed and stirred in a JJ-5 type cement paste stirrer to obtain cement paste.

S5: pouring the stirred cement paste into a conical metal mould with the upper caliber of 36mm, the lower caliber of 60mm and the height of 60mm, which is arranged on a smooth and moist glass plate, floating the cement paste at the upper opening of the mould, vertically lifting the mould at a constant speed and timing for 30 seconds, finally measuring the vertical and horizontal diameters of the spread cement paste, and taking the average value as the fluidity of the cement paste.

Example seven:

the use method of the additive for effectively improving the fluidity of the mixture of the slag powder of the artificial marble and the cementitious material, which is the additive of the third application example, comprises the following steps:

s1: obtaining waste residues of the artificial marble;

s101: extracting concentrated artificial marble waste slurry from a sedimentation tank of an artificial marble processing factory;

s102: placing the concentrated artificial marble waste slurry into a dryer to be dried continuously for 3 hours at 105 ℃ to obtain massive artificial marble waste residues;

s2: crushing the dried blocky artificial marble waste residue for 10 minutes by using a ball mill to obtain artificial marble powder;

s3: adding 80 parts by weight of cement into 20 parts by weight of the artificial marble powder, and mixing and stirring uniformly by using a mixing stirrer;

s4: 0.10 parts by weight of polycarboxylic acid water reducing agent and 1.0 part by weight of the admixture of example three are added to the artificial marble powder and cement, and water is added according to the water-cement ratio of 0.29, and the mixture is mixed and stirred in a JJ-5 type cement paste stirrer to obtain cement paste.

S5: pouring the stirred cement paste into a conical metal mould with the upper caliber of 36mm, the lower caliber of 60mm and the height of 60mm, which is arranged on a smooth and moist glass plate, floating the cement paste at the upper opening of the mould, vertically lifting the mould at a constant speed and timing for 30 seconds, finally measuring the vertical and horizontal diameters of the spread cement paste, and taking the average value as the fluidity of the cement paste.

Example eight:

the use method of the additive for effectively improving the fluidity of the mixture of the slag powder of the artificial marble and the cementitious material, which is the additive of the third application example, comprises the following steps:

s1: obtaining waste residues of the artificial marble;

s101: extracting concentrated artificial marble waste slurry from a sedimentation tank of an artificial marble processing factory;

s102: placing the concentrated artificial marble waste slurry into a dryer to be dried continuously for 3 hours at 105 ℃ to obtain massive artificial marble waste residues;

s2: crushing the dried blocky artificial marble waste residue for 10 minutes by using a ball mill to obtain artificial marble powder;

s3: adding 80 parts by weight of cement into 30 parts by weight of the artificial marble powder, and mixing and stirring uniformly by using a mixing stirrer;

s4: 0.10 parts by weight of polycarboxylic acid water reducing agent and 1.0 part by weight of the admixture of example three are added to the artificial marble powder and cement, and water is added according to the water-cement ratio of 0.29, and the mixture is mixed and stirred in a JJ-5 type cement paste stirrer to obtain cement paste.

S5: pouring the stirred cement paste into a conical metal mould with the upper caliber of 36mm, the lower caliber of 60mm and the height of 60mm, which is arranged on a smooth and moist glass plate, floating the cement paste at the upper opening of the mould, vertically lifting the mould at a constant speed and timing for 30 seconds, finally measuring the vertical and horizontal diameters of the spread cement paste, and taking the average value as the fluidity of the cement paste.

In the fourth embodiment to the eighth embodiment, the water reducing rate of the polycarboxylic acid water reducing agent is not less than 14%, and the mass fraction of the particles having a particle size of more than 45 μm in the artificial marble waste residue is less than 25 wt%.

And (3) testing: the samples provided in the fourth to eighth examples are used, and the results of the fluidity test thereof are shown in Table 1 with reference to GB/T8077-2000 "Experimental method for homogeneity of concrete admixtures".

Table 1 fluidity test index of four-to eight-examples cementitious materials

	Fluidity/mm
		Example four	155
EXAMPLE five	100
		EXAMPLE six	280
EXAMPLE seven	274
		Example eight	266

As can be seen from Table 1, when the raw material ratio of example IV is adopted, the fluidity of the slurry is sharply reduced to 155mm when the polycarboxylic acid water reducing agent is added alone; meanwhile, when the raw material proportion of the fifth example is adopted, the net slurry fluidity is only 100mm when the additive of the third example is independently added, and the net slurry fluidity is far smaller than the requirement of 260mm in industry. The sixth embodiment to the eighth embodiment are that the admixture of the third embodiment is added on the basis of adding the polycarboxylic acid water reducing agent, the fluidity of the slurry is more than 260mm, and the amplification is 80.6%, 76.7% and 71.6%.

The above-mentioned embodiments only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.