阅读说明：本技术 粉料掺合剂的制备方法及含有粉料掺合剂的混凝土 (Preparation method of powder admixture and concrete containing powder admixture ) 是由 徐金宝 于 2021-11-02 设计创作，主要内容包括：本发明揭示了一种粉料掺合剂的制备方法及含有粉料掺合剂的混凝土,其中,粉料掺合剂的制备方法包括以下步骤：产生焚烧炉渣；获得焚烧炉渣的组份类别及占比；根据焚烧炉渣的组份类别及占比,与配剂料混合,获得粉料掺合剂；其中,配剂料的组份种类和占比是根据焚烧炉渣的组份类别及占比进行配备；配剂料包括氧化铝、二氧化硅、三氧化二铁、氧化钙、碳、缓凝剂和粘合剂。本申请通过将焚烧炉渣制成粉料掺合剂,提高了污泥焚烧炉渣和垃圾焚烧炉渣的利用率,解决了污泥和垃圾焚烧炉渣大量堆积对环境造成污染的问题,符合绿色环保的发展趋势,同时,采用粉料掺合剂制成的混凝土具有良好的活性、流动性以及抗压性能。(The invention discloses a preparation method of a powder admixture and concrete containing the powder admixture, wherein the preparation method of the powder admixture comprises the following steps: generating incinerator slag; obtaining the component types and the proportion of the incinerator slag; mixing the incinerator slag with a compounding agent according to the component types and the proportions of the incinerator slag to obtain a powder blending agent; wherein, the component types and the proportions of the ingredients are prepared according to the component types and proportions of the incinerator slag; the additive material comprises alumina, silicon dioxide, ferric oxide, calcium oxide, carbon, retarder and adhesive. This application is through making the powder admixture with incineration slag, has improved the utilization ratio of sludge incineration slag and waste incineration slag, has solved sludge and waste incineration slag and has piled up the problem that causes the pollution to the environment in a large number, accords with green's development trend, and simultaneously, the concrete that adopts the powder admixture to make has good activity, mobility and compressive property.)

1. The preparation method of the powder admixture is characterized by comprising the following steps:

generating incinerator slag;

obtaining the component types and the proportion of the incinerator slag;

mixing the incinerator slag with a compounding agent according to the component types and the proportions of the incinerator slag to obtain a powder admixture; wherein, the component types and the proportions of the ingredients are prepared according to the component types and the proportions of the incinerator slag; the ingredients comprise alumina, silica, ferric oxide, calcium oxide, carbon, a retarder and a binder.

2. The method of preparing a powder admixture according to claim 1, wherein said incineration slag is taken from sludge incineration slag and/or household garbage incineration slag.

3. The method of preparing a powder admixture as defined in claim 2 wherein said incinerator slag comprises the following components: alumina, silicon dioxide, ferric oxide, calcium oxide, carbon and residual materials.

4. The method of claim 1, wherein the method further comprises the following steps of, before mixing the incinerator slag with a compounding agent according to the component types and ratios of the incinerator slag to obtain the powder admixture:

and crushing the incinerator slag into powder.

5. The method for preparing powder admixture according to claim 1, wherein the step of mixing the powder admixture with a compounding agent according to the component types and proportions of the incineration slag comprises the substeps of:

storing the components of the incinerator slag and the additive material respectively;

presetting the components and the component proportion of the powder admixture;

and mixing and batching the incinerator slag and the batching material which are stored according to the component and the component ratio of the powder admixture.

6. The method of preparing a powder admixture as defined in claim 1 wherein said set retarder is gypsum.

7. The method of claim 1, wherein said binder is a silicate.

8. The method of claim 1, wherein the powder admixture comprises the following components in parts by weight:

excess material: 3.5 to 52.5 portions of

Alumina: 4.5 to 9.5 portions of

Silicon dioxide: 11 to 22 portions of

Iron sesquioxide: 5 to 12 portions of

Calcium oxide: 17-35 parts of

Carbon: 5-8 parts of

Gypsum: 3-5 parts of

Silicate salt: 2-5 parts.

9. The concrete containing the powder admixture as claimed in any one of claims 1 to 8, which comprises the following components in parts by weight:

powder admixture: 10-12 parts of

Cement: 10-12 parts of

Sand: 64 to 70 portions of

Water: 10-12 parts.

10. The concrete containing a powder admixture as claimed in claim 9, wherein said cement is Tapai cement 42.5.

Technical Field

The invention relates to the technical field of building materials, in particular to a preparation method of a powder admixture and concrete containing the powder admixture.

Background

Sludge produced by urban sewage treatment plants contains a large amount of pollutants such as organic matters and heavy metals, the stacking is improper, the space is occupied, the attractiveness is affected, and the environmental pollution is possibly caused.

The existing sludge incineration slag and garbage incineration slag are commonly used for producing ceramic granules so as to realize the recycling of the slag, but people have small demand on the ceramic granules, and still a lot of slag cannot be recycled.

Therefore, it is an urgent problem to fully utilize sludge and waste incineration slag.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a preparation method of a powder admixture and concrete containing the powder admixture.

The invention discloses a preparation method of a powder admixture, which comprises the following steps:

generating incinerator slag;

obtaining the component types and the proportion of the incinerator slag;

mixing the incinerator slag with a compounding agent according to the component types and the proportions of the incinerator slag to obtain a powder blending agent; wherein, the component types and the proportions of the ingredients are prepared according to the component types and proportions of the incinerator slag; the additive material comprises alumina, silicon dioxide, ferric oxide, calcium oxide, carbon, retarder and adhesive.

According to an embodiment of the invention, the incineration slag is taken from sludge incineration slag and/or domestic waste incineration slag.

According to an embodiment of the present invention, the incineration slag includes the following components: alumina, silicon dioxide, ferric oxide, calcium oxide, carbon and residual materials.

According to an embodiment of the invention, before mixing the incinerator slag with the formulation according to the component types and proportions thereof to obtain the powder admixture, the method further comprises the following steps:

the incinerator slag is crushed into powder.

According to one embodiment of the invention, the step of mixing the incinerator slag with the formulation according to the component types and the proportions thereof to obtain the powder admixture comprises the following substeps:

storing the components of the incinerator slag and the additive material respectively;

presetting the components and the component proportion of a powder admixture;

the components of the powder admixture and the component ratio are mixed and proportioned according to the stored incinerator slag and the dosing material.

According to one embodiment of the invention, the retarder is gypsum.

According to one embodiment of the invention, the binder is a silicate.

According to one embodiment of the present invention, the powder admixture comprises the following components in parts by weight:

excess material: 3.5 to 52.5 portions of

Alumina: 4.5 to 9.5 portions of

Silicon dioxide: 11 to 22 portions of

Iron sesquioxide: 5 to 12 portions of

Calcium oxide: 17-35 parts of

Carbon: 5-8 parts of

Gypsum: 3-5 parts of

Silicate salt: 2-5 parts.

The invention also discloses concrete containing the powder admixture, which comprises the following components in parts by weight:

powder admixture: 10-12 parts of

Cement: 10-12 parts of

Sand: 64 to 70 portions of

Water: 10-12 parts.

According to one embodiment of the invention, the cement is Takara cement 42.5.

The beneficial effect of this application lies in: the powder admixture is prepared from the incinerator slag, so that the utilization rate of the sludge incinerator slag and the garbage incinerator slag is improved, the problem of environmental pollution caused by a large amount of accumulated sludge incinerator slag and garbage incinerator slag is solved, the development trend of environmental protection is met, and meanwhile, the concrete prepared from the powder admixture has good activity, fluidity and compression resistance.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a flow chart of the preparation of a powder admixture;

fig. 2 is a preparation flowchart of step S4.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention.

Referring to FIG. 1, FIG. 1 is a flow chart of the preparation of a powder admixture. The preparation method of the powder admixture in the embodiment comprises the following steps:

s1: generating incinerator slag;

s2: obtaining the component types and the proportion of the incinerator slag;

s3: crushing the incinerator slag into powder;

s4: mixing the incinerator slag with a compounding agent according to the component types and the proportions of the incinerator slag to obtain a powder blending agent; wherein, the component types and the proportions of the ingredients are prepared according to the component types and proportions of the incinerator slag; the additive material comprises alumina, silicon dioxide, ferric oxide, calcium oxide, carbon, retarder and adhesive.

In step S1, the incineration slag is taken from sludge incineration slag and/or household garbage incineration slag, and both the sludge incineration slag and the household garbage incineration slag contain alumina, silica, ferric oxide, calcium oxide, carbon, and remainders. Before the incineration slag leaves a factory, the component types and the proportion of the incineration slag are firstly checked.

Preferably, in step S4, the alumina, silica, ferric oxide, calcium oxide, carbon, retarder and binder are all commercially available materials, further, the retarder is gypsum and the binder is sodium silicate.

Referring to fig. 2, fig. 2 is a preparation flowchart of step S4. Step S4 further includes the following sub-steps:

s41: storing the components of the incinerator slag and the additive material respectively;

s42: presetting the components and the component proportion of a powder admixture;

s43: the components of the powder admixture and the component ratio are mixed and proportioned according to the stored incinerator slag and the dosing material.

Preferably, in step S41, storage devices such as storage barrels, storage tanks or storage hoppers can be used to store the components of the incinerator slag and the additive separately. In step S42, the components and the component ratios of the powder admixture may be preset in a computer. In step S43, the computer controls the weighing assembly and the transportation assembly to respectively weigh and transport each component of the incinerator slag and the ingredient material according to the components and the component ratios of the preset powder admixture, and then transports each component to the mixing assembly for mixing. The weighing component can adopt an electronic scale, the conveying component can adopt a screw conveyor, and the belt conveyor mixing component can adopt a dosing machine.

The powder admixture comprises the following components in parts by weight: 3.5-52.5 parts of residual materials, 4.5-9.5 parts of aluminum oxide, 11-22 parts of silicon dioxide, 5-12 parts of ferric oxide, 17-35 parts of calcium oxide, 5-8 parts of carbon, 3-5 parts of gypsum and 2-5 parts of sodium silicate. Wherein the residual material is the product left after removing alumina, silica, ferric oxide, calcium oxide and carbon after burning sludge or garbage. Preferably, the powder admixture comprises the following components in parts by weight: 12-41 parts of residual materials, 7-9 parts of aluminum oxide, 13-20 parts of silicon dioxide, 6-11 parts of ferric oxide, 23-331 parts of calcium oxide, 5-7 parts of carbon, 3-5 parts of gypsum and 2-5 parts of sodium silicate.

The concrete containing the powder admixture comprises the following components in parts by weight: 10-12 parts of powder admixture, 10-12 parts of cement, 64-70 parts of sand and 10-12 parts of water.

Further, the cement is Tapai cement 42.5, and the sand is standard sand.

Preferably, a dye may be added to the concrete containing the powder admixture of the present invention to dye the concrete to a color desired by the customer.

To further understand the contents, features and effects of the present invention, the following examples are illustrated:

example 1

Weighing 40.5 parts of residual materials, 7 parts of alumina, 13 parts of silicon dioxide, 6.5 parts of ferric oxide, 23 parts of calcium oxide, 2 parts of carbon, 3 parts of gypsum and 2 parts of sodium silicate. Fully mixing the mixture by a mixer to prepare the powder admixture.

11 parts of the powder admixture of example 1, 11 parts of Tapai cement 42.5, 67 parts of standard sand and 11 parts of water were weighed, and concrete containing the powder admixture was prepared by a conventional method, followed by casting to obtain concrete Block A1.

Example 2

Weighing 31.5 parts of residual materials, 8 parts of alumina, 19 parts of silicon dioxide, 9 parts of ferric oxide, 30 parts of calcium oxide, 6 parts of carbon, 3 parts of gypsum and 3.5 parts of sodium silicate, and fully mixing by a mixer to prepare the powder admixture.

11 parts of the powder admixture of example 2, 11 parts of Tapai cement 42.5, 67 parts of standard sand and 11 parts of water were weighed, and concrete containing the powder admixture was prepared by a conventional method, followed by casting to obtain concrete Block A2.

Example 3

Weighing 14 parts of residual materials, 9 parts of alumina, 20 parts of silicon dioxide, 10.5 parts of ferric oxide, 31 parts of calcium oxide, 6 parts of carbon, 4.5 parts of gypsum and 5 parts of sodium silicate, and fully mixing by a mixer to prepare the powder admixture.

11 parts of the powder admixture of example 3, 11 parts of Tapai cement 42.5, 67 parts of standard sand and 11 parts of water were weighed, and concrete containing the powder admixture was prepared by a conventional method, followed by casting to obtain concrete Block A3.

Comparative example 1

11 parts of S75 mineral powder, 11 parts of Tapai cement 42.5, 67 parts of standard sand and 11 parts of water are weighed, concrete containing the powder admixture is prepared by the existing method, and then a concrete block D1 is prepared by adopting a casting molding method. Wherein the S75 mineral powder is the existing S75-grade slag powder.

Comparative example 2

11 parts of S95 mineral powder, 11 parts of Tapai cement 42.5, 67 parts of standard sand and 11 parts of water are weighed, concrete containing the powder admixture is prepared by the existing method, and then a concrete block D2 is prepared by adopting a casting molding method. Wherein the S95 mineral powder is the existing S95-grade slag powder.

Comparative example 3

11 parts of S105 mineral powder, 11 parts of Tapai cement 42.5, 67 parts of standard sand and 11 parts of water are weighed, concrete containing the powder admixture is prepared by the conventional method, and then a concrete block D3 is prepared by adopting a casting molding method. Wherein the S105 mineral powder is the existing S105-grade slag powder.

The concrete of examples 1 to 3 and comparative examples 1 to 3 were measured for flow property, compression resistance and activity index, and the test results are shown in the following table:

as can be seen from the above table, the concrete made with the powder admixture has better flow properties than the ore powder with the same level of activity, and at the same time has compressive strength equivalent to that of the ore powder with the same level of activity.

To sum up: according to the preparation method of the powder admixture, the incinerator slag is prepared into the powder admixture, so that the utilization rate of the sludge incinerator slag and the garbage incinerator slag is improved, the problem of environmental pollution caused by large accumulation of the sludge incinerator slag and the garbage incinerator slag is solved, the development trend of environmental protection is met, and meanwhile, concrete prepared from the powder admixture has good activity, fluidity and compression resistance.

The above is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.