阅读说明：本技术 高效耐腐蚀抗冻融防水剂 (Efficient corrosion-resistant freeze-thaw-resistant waterproof agent ) 是由 彭立坚 于 2020-04-27 设计创作，主要内容包括：本发明公开了高效耐腐蚀抗冻融防水剂,涉及混凝土外加剂技术领域；为了解决外加剂比较功能单一问题；按质量份计含有以下成分：钢渣混合粉20-30份、铝渣粉30-40份、优质硅粉30-40份、熟石灰5-8份、养护剂3-5份,所述优质硅粉包括硅粉、硅烷偶联剂、水和乙醇,且硅粉、硅烷偶联剂、水和乙醇的质量比为10∶0.1-3∶20-50∶20-100。本发明对混凝土的高要求能同时满足,集混凝土的减水,抗冻融,抗渗,耐腐蚀,高强度,易操作于一体；同时又是一种水剂产品,方便添加与计量准确性,又减少了粉剂的灰尘；极大的提高了施工进度,方便操作,节能环保。是现代高强度混凝土的最佳选择。(The invention discloses a high-efficiency corrosion-resistant freeze-thaw-resistant waterproof agent, and relates to the technical field of concrete admixtures; aiming at solving the problem of single comparative function of the admixture; the composition comprises the following components in parts by mass: 20-30 parts of steel slag mixed powder, 30-40 parts of aluminum slag powder, 30-40 parts of high-quality silicon powder, 5-8 parts of hydrated lime and 3-5 parts of curing agent, wherein the high-quality silicon powder comprises silicon powder, silane coupling agent, water and ethanol, and the mass ratio of the silicon powder to the silane coupling agent to the water to the ethanol is 10: 0.1-3: 20-50: 20-100. The concrete meets the high requirements of the concrete at the same time, integrates the water reduction, freeze thawing resistance, permeability resistance, corrosion resistance and high strength of the concrete, and is easy to operate; meanwhile, the product is an aqueous product, is convenient for adding and metering accuracy, and reduces dust of powder; the construction progress is greatly improved, the operation is convenient, and the energy conservation and the environmental protection are realized. Is the best choice for modern high-strength concrete.)

1. The efficient corrosion-resistant freeze-thaw-resistant waterproof agent is characterized by comprising the following components in parts by mass: 20-30 parts of steel slag mixed powder, 30-40 parts of aluminum slag powder, 30-40 parts of high-quality silicon powder, 5-8 parts of hydrated lime and 3-5 parts of curing agent.

2. The efficient corrosion-resistant freeze-thaw-resistant waterproofing agent according to claim 1, wherein the high-quality silicon powder comprises silicon powder, a silane coupling agent, water and ethanol, and the mass ratio of the silicon powder to the silane coupling agent to the water to the ethanol is 10: 0.1-3: 20-50: 20-100.

3. A high-efficiency corrosion-resistant freeze-thaw-resistant waterproofing agent according to claim 2, wherein the silane coupling agent is one or more of KH-540, KH-560, KH-570, KH-792, Si-602, Si-563, A-151, A-171 and A-172.

4. A high-efficiency corrosion-resistant freeze-thaw-resistant waterproofing agent as claimed in claim 2 or 3, wherein the preparation process of the high-quality silicon powder comprises the following steps: adding silicon powder and a silane coupling agent into a mixed solution of deionized water and ethanol, stirring and reacting for 20 minutes in a stirrer with the temperature of 50-60 ℃ and the rotation speed of 200 rpm, then increasing the temperature to 70-80 ℃ for reacting for 50 minutes, and finally separating and washing to obtain the high-quality silicon powder.

5. The efficient corrosion-resistant freeze-thaw-resistant waterproofing agent according to claim 4, wherein the particle size range of the high-quality silicon powder is 10-25 nm.

6. The efficient corrosion-resistant freeze-thaw-resistant waterproofing agent according to claim 1, wherein the steel slag mixed powder contains hydraulic calcium silicate, dicalcium silicate, magnesium-iron solid solution, f-CaO and MgO, the hydraulic calcium silicate and dicalcium silicate are contained in an amount of 50% or more, the f-CaO is contained in an amount of 10% to 13%, and the MgO is contained in an amount of 5% to 10%.

7. The efficient corrosion-resistant freeze-thaw-resistant waterproof agent as claimed in claim 1, wherein the steel slag mixed powder comprises 20-25 parts, 30-35 parts of aluminum slag powder, 30-35 parts of high-quality silicon powder, 5-6 parts of hydrated lime and 4-5 parts of curing agent.

8. A high-efficiency corrosion-resistant freeze-thaw-resistant waterproofing agent according to claim 3, wherein the silane coupling agent is KH-792, Si-602, A-171.

9. The efficient corrosion-resistant freeze-thaw-resistant waterproof agent as claimed in claim 7, wherein the efficient corrosion-resistant freeze-resistant waterproof agent comprises 25 parts of steel slag mixed powder, 35 parts of aluminum slag powder, 32 parts of high-quality silicon powder, 5.5 parts of hydrated lime and 4.5 parts of curing agent.

10. A highly efficient corrosion-resistant freeze-thaw resistant waterproofing agent according to claim 1, 7 or 9 wherein the waterproofing agent is prepared by a method comprising the steps of:

s1: preparing raw materials with corresponding parts by mass, namely 20-30 parts of steel slag mixed powder, 30-40 parts of aluminum slag powder, 30-40 parts of high-quality silicon powder, 5-8 parts of hydrated lime and 3-5 parts of curing agent;

s2: adding a curing agent into a stirrer in advance, adding 60% of deionized water as a raw material, mixing for 5 minutes in the stirrer at 200 revolutions per minute, adding high-quality silicon powder, hydrated lime and steel slag mixed powder at one time, and mixing for 20 minutes at the temperature of 40-60 ℃;

s3: adding aluminum slag powder and high-quality silicon powder in sequence, and mixing for 1 hour at the temperature of 50-80 ℃ to obtain the waterproof agent.

Technical Field

The invention relates to the technical field of concrete admixtures, in particular to a high-efficiency corrosion-resistant freeze-thaw-resistant waterproof agent.

Background

With the acceleration of urbanization process, people have higher and higher requirements on safety and reliability of buildings, concrete is a main building material, the properties of strength, durability and the like of the concrete directly influence the quality of the buildings, and the quality of the buildings is closely related to the safety and satisfaction degree of residents. The concrete is used as a heterogeneous brittle material, the shrinkage and cracking phenomena often occur, particularly, in the construction process of reinforced concrete, the concrete shrinks after being solidified and hardened, the cracking phenomena are generated due to the constraint action of reinforcing steel bars, and the durability of the concrete is seriously influenced.

The existing admixture has single comparative function, if the requirements of water reduction, impermeability, freeze-thaw resistance, corrosion resistance, high strength and the like to concrete are met at the same time, a single product is difficult to meet the requirements, 3-5 different functional admixtures are added at the same time, the mutual adaptability of the admixtures is adjusted, and the difficulty and operability of engineering are increased.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a high-efficiency corrosion-resistant freeze-thaw-resistant waterproof agent.

In order to achieve the purpose, the invention adopts the following technical scheme:

the efficient corrosion-resistant freeze-thaw-resistant waterproof agent comprises the following components in parts by mass: 20-30 parts of steel slag mixed powder, 30-40 parts of aluminum slag powder, 30-40 parts of high-quality silicon powder, 5-8 parts of hydrated lime and 3-5 parts of curing agent.

As a further scheme of the invention: the high-quality silicon powder comprises silicon powder, a silane coupling agent, water and ethanol, and the mass ratio of the silicon powder to the silane coupling agent to the water to the ethanol is 10: 0.1-3: 20-50: 20-100.

As a still further scheme of the invention: the silane coupling agent is one or more of KH-540, KH-560, KH-570, KH-792, Si-602, Si-563, A-151, A-171 and A-172.

As a further aspect of the invention: the preparation process of the high-quality silicon powder comprises the following steps: adding silicon powder and a silane coupling agent into a mixed solution of deionized water and ethanol, stirring and reacting for 20 minutes in a stirrer with the temperature of 50-60 ℃ and the rotation speed of 200 rpm, then increasing the temperature to 70-80 ℃ for reacting for 50 minutes, and finally separating and washing to obtain the high-quality silicon powder.

Preferably: the particle size range of the high-quality silicon powder is 10-25 nm.

As a further scheme of the invention: the steel slag mixed powder contains hydraulic calcium silicate, dicalcium silicate, magnesium-iron phase solid solution, f-CaO and MgO.

Preferably: the hydraulic calcium silicate and dicalcium silicate content is above 50%, f-CaO content is 10-13%, and MgO content is 5-10%.

Preferably: 20-25 parts of steel slag mixed powder, 30-35 parts of aluminum slag powder, 30-35 parts of high-quality silicon powder, 5-6 parts of hydrated lime and 4-5 parts of curing agent.

Preferably: the silane coupling agent is KH-792, Si-602 and A-171.

Preferably: 25 parts of steel slag mixed powder, 35 parts of aluminum slag powder, 32 parts of high-quality silicon powder, 5.5 parts of hydrated lime and 4.5 parts of curing agent.

The efficient corrosion-resistant freeze-thaw-resistant waterproof agent comprises the following steps:

s1: preparing raw materials with corresponding parts by mass, namely 20-30 parts of steel slag mixed powder, 30-40 parts of aluminum slag powder, 30-40 parts of high-quality silicon powder, 5-8 parts of hydrated lime and 3-5 parts of curing agent;

s2: adding a curing agent into a stirrer in advance, adding 60% of deionized water as a raw material, mixing for 5 minutes in the stirrer at 200 revolutions per minute, adding high-quality silicon powder, hydrated lime and steel slag mixed powder at one time, and mixing for 20 minutes at the temperature of 40-60 ℃;

s3: adding aluminum slag powder and high-quality silicon powder in sequence, and mixing for 1 hour at the temperature of 50-80 ℃ to obtain the waterproof agent.

The invention has the beneficial effects that:

1. the steel slag powder and the aluminum slag powder play a double shrinkage compensation role to prevent concrete from shrinkage cracking; the aluminum slag powder is used as an expansion source to exert the expansion effect of the concrete, so that the frost resistance of the concrete is improved; compared with the existing waterproof agent, the waterproof agent does not need to add expanding agent and fiber, has low construction cost, is easier to meet the construction requirement and is easier to maintain; because no fiber is needed to be added, the raw materials such as the aluminum slag powder, the steel slag powder and the like are easy to stir uniformly, and the mixing amount is easy to control.

2. High-quality silicon powder is used as an inorganic compact component, the particle size of the high-quality silicon powder is nanoscale, and the particle size range is 10-25 nm. The silicon powder contains 90% of silicon dioxide, and after the surface of the silicon dioxide is modified, the surface activity and lipophilicity are enhanced, so that the adhesive force of organic particles and inorganic particles in cement can be enhanced, and the wear resistance and flexibility of cement mortar can be enhanced; the high-quality silicon powder can also react with calcium hydroxide generated by cement hydration, so that the compactness of concrete is further enhanced, harmful ions are greatly reduced from permeating into a channel, and the overall corrosion resistance of the concrete is enhanced.

In conclusion, the high requirements of the waterproof agent on concrete can be simultaneously met, and the waterproof agent integrates the functions of water reduction, freeze thawing resistance, permeability resistance, corrosion resistance and high strength of concrete and is easy to operate; meanwhile, the product is an aqueous product, is convenient for adding and metering accuracy, and reduces dust of powder; the construction progress is greatly improved, the operation is convenient, and the energy conservation and the environmental protection are realized. Is the best choice for modern high-strength concrete.

Detailed Description

The technical solution of the present patent will be described in further detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by reference are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the indicated orientations and positional relationships based on the indicated orientations and positional relationships for ease of description and to simplify the description, but are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of this patent.

In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.

Example 1:

the efficient corrosion-resistant freeze-thaw-resistant waterproof agent comprises the following components in parts by mass:

20-30 parts of steel slag mixed powder, 30-40 parts of aluminum slag powder, 30-40 parts of high-quality silicon powder, 5-8 parts of hydrated lime and 3-5 parts of curing agent.

Wherein the high-quality silicon powder comprises silicon powder, a silane coupling agent, water and ethanol, and the mass ratio of the silicon powder to the silane coupling agent to the water to the ethanol is 10: 0.1-3: 20-50: 20-100;

the silane coupling agent is one or more of KH-540, KH-560, KH-570, KH-792, Si-602, Si-563, A-151, A-171 and A-172.

The preparation process of the high-quality silicon powder comprises the following steps: adding silicon powder and a silane coupling agent into a mixed solution of deionized water and ethanol, stirring and reacting for 20 minutes in a stirrer at the temperature of 50-60 ℃ and 200 revolutions per minute, then increasing the temperature to 70-80 ℃ for reacting for 50 minutes, and finally separating and washing to obtain high-quality silicon powder;

in the embodiment, preferably, the particle size range of the high-quality silicon powder is 10 to 25 nm.

The preparation method of the waterproof agent comprises the following steps:

s1: preparing raw materials with corresponding parts by mass, namely 20-30 parts of steel slag mixed powder, 30-40 parts of aluminum slag powder, 30-40 parts of high-quality silicon powder, 5-8 parts of hydrated lime and 3-5 parts of curing agent;

s2: adding a curing agent into a stirrer in advance, adding 60% of deionized water as a raw material, mixing for 5 minutes in the stirrer at 200 revolutions per minute, adding high-quality silicon powder, hydrated lime and steel slag mixed powder at one time, and mixing for 20 minutes at the temperature of 40-60 ℃;

s3: adding aluminum slag powder and high-quality silicon powder in sequence, and mixing for 1 hour at the temperature of 50-80 ℃ to obtain the waterproof agent.

Wherein the steel slag mixed powder contains hydraulic calcium silicate, dicalcium silicate, magnesium-iron phase solid solution, f-CaO and MgO, the content of the hydraulic calcium silicate and the hydraulic dicalcium silicate is more than 50%, the content of the f-CaO is 10-13%, and the content of the MgO is 5-10%.

Example 2:

the efficient corrosion-resistant freeze-thaw-resistant waterproof agent comprises the following components in parts by mass:

20-25 parts of steel slag mixed powder, 30-35 parts of aluminum slag powder, 30-35 parts of high-quality silicon powder, 5-6 parts of hydrated lime and 4-5 parts of curing agent.

Wherein the high-quality silicon powder comprises silicon powder, a silane coupling agent, water and ethanol, and the mass ratio of the silicon powder to the silane coupling agent to the water to the ethanol is 10: 0.1-3: 20-50: 20-100; the silane coupling agent is KH-792, Si-602 and A-171.

Wherein the steel slag mixed powder contains hydraulic calcium silicate, dicalcium silicate, magnesium-iron phase solid solution, f-CaO and MgO, the content of the hydraulic calcium silicate and the hydraulic dicalcium silicate is more than 50%, the content of the f-CaO is 10-13%, and the content of the MgO is 5-10%.

The preparation method of the waterproof agent comprises the following steps:

s1: preparing raw materials with corresponding parts by mass, namely 20-30 parts of steel slag mixed powder, 30-40 parts of aluminum slag powder, 30-40 parts of high-quality silicon powder, 5-8 parts of hydrated lime and 3-5 parts of curing agent;

s2: adding a curing agent into a stirrer in advance, adding 60% of deionized water as a raw material, mixing for 5 minutes in the stirrer at 200 revolutions per minute, adding high-quality silicon powder, hydrated lime and steel slag mixed powder at one time, and mixing for 20 minutes at the temperature of 40-60 ℃;

s3: adding aluminum slag powder and high-quality silicon powder in sequence, and mixing for 1 hour at the temperature of 50-80 ℃ to obtain the waterproof agent.

Example 3:

the efficient corrosion-resistant freeze-thaw-resistant waterproof agent comprises the following components in parts by mass:

25 parts of steel slag mixed powder, 35 parts of aluminum slag powder, 32 parts of high-quality silicon powder, 5.5 parts of hydrated lime and 4.5 parts of curing agent.

Wherein the high-quality silicon powder comprises silicon powder, a silane coupling agent, water and ethanol, and the mass ratio of the silicon powder to the silane coupling agent to the water to the ethanol is 10: 0.1-3: 20-50: 20-100; the silane coupling agent is KH-792, Si-602 and A-171.

Wherein the steel slag mixed powder contains hydraulic calcium silicate, dicalcium silicate, magnesium-iron phase solid solution, f-CaO and MgO, the content of the hydraulic calcium silicate and the hydraulic dicalcium silicate is more than 50%, the content of the f-CaO is 10-13%, and the content of the MgO is 5-10%.

The preparation method of the waterproof agent comprises the following steps:

s1: preparing raw materials with corresponding parts by mass, namely 20-30 parts of steel slag mixed powder, 30-40 parts of aluminum slag powder, 30-40 parts of high-quality silicon powder, 5-8 parts of hydrated lime and 3-5 parts of curing agent;

s2: adding a curing agent into a stirrer in advance, adding 60% of deionized water as a raw material, mixing for 5 minutes in the stirrer at 200 revolutions per minute, adding high-quality silicon powder, hydrated lime and steel slag mixed powder at one time, and mixing for 20 minutes at the temperature of 40-60 ℃;

s3: adding aluminum slag powder and high-quality silicon powder in sequence, and mixing for 1 hour at the temperature of 50-80 ℃ to obtain the waterproof agent.

The main technical parameters of the waterproof agent are as follows:

1. 1-2% by weight: (total weight of ancient cement);

2. impervious rating: can reach more than P30;

and 3, anti-freezing label: may be greater than F300;

4, compressive strength ratio: the mixing proportion and slump are the same, and the concrete is compared with the standard concrete;

the strength is improved by 20-30% in 7 days and 10-20% in 28 days;

5. water reducing rate: 14 to 25 percent;

6 coagulation time: compared with the standard concrete, the concrete can be delayed for more than 90min, and the setting time can be adjusted according to the construction requirements;

7. slump increase value: compared with the standard concrete, the standard concrete can be increased by 100-140 mm;

8. can reduce the hydration heat by more than 10-15 percent, delay the occurrence time of the hydration heat peak value and prevent temperature difference stress cracks.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.