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A kind of high-strength anti-seepage cement and its processing technology

A high-strength, cement technology, applied in the field of cement materials, can solve problems such as long cracks and affecting the impermeability of cement

Active Publication Date: 2021-05-11
河北曲寨矿峰水泥股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, sodium methyl silicate water repellent, silver ion polyacrylamide dispersant, fatty acid glyceride surfactant and acrylic emulsion will produce a lot of bubbles during the mixing process. , will penetrate through the air bubbles and produce many fine air bubbles, these small air bubbles remain inside the cement, although the impact on the dispersion of each aggregate is small, so that the inside of the cement can meet a certain degree of compactness, but once the cement cracks or cracks, Then the small air bubbles will be chained in bands, resulting in longer and longer cracks, which will affect the impermeability of the cement.

Method used

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  • A kind of high-strength anti-seepage cement and its processing technology
  • A kind of high-strength anti-seepage cement and its processing technology
  • A kind of high-strength anti-seepage cement and its processing technology

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A high-strength anti-seepage cement is processed through the following steps:

[0036] Raw material pretreatment: the diatomite obtained by calcination at 950°C (the calcination method is a very mature prior art, so I won’t go into details here) is passed through a 900-mesh sieve, and the diatomite with a particle size of 900 mesh is screened. Standby; pass the limestone through a 220-mesh sieve, and screen to obtain limestone with a particle size of 220 mesh for future use.

[0037] Aggregate mixing: Add limestone, clay, silica fume, talcum powder and diatomaceous earth to 1 / 3 of the total amount of water according to the addition amount in Table 1, stir and mix at a speed of 300r / min for 25min, and then send it to a ball mill Ball milling was carried out, and mixture A was obtained after ball milling for 20 minutes.

[0038] Auxiliary mixing: According to the addition amount in Table 1, add silicone-acrylic emulsion, alkali-resistant glass fiber, defoamer, and disper...

Embodiment 2

[0042] A high-strength anti-seepage cement is processed through the following steps:

[0043] Raw material pretreatment: the diatomite obtained by calcination at 950°C (the calcination method is a very mature prior art, so I won’t go into details here) is passed through a 1000-mesh sieve, and the diatomite with a particle size of 1000 mesh is screened. Standby; pass the limestone through a 250-mesh sieve, and screen to obtain limestone with a particle size of 250 mesh for future use.

[0044] Aggregate mixing: according to the amount added in Example 1, add limestone, clay, silica fume, talcum powder and diatomaceous earth to 1 / 3 of the total amount of water, stir and mix at a speed of 500r / min for 15min, and then feed into Ball milling was carried out in a ball mill, and mixture A was obtained after ball milling for 10 minutes.

[0045] Auxiliary mixing: According to the amount added in Example 1, add silicon-acrylic emulsion, alkali-resistant glass fiber, defoamer, and disp...

Embodiment 3

[0049] A high-strength anti-seepage cement is processed through the following steps:

[0050] Raw material pretreatment: the diatomite obtained by calcination at 950°C (the calcination method is a very mature prior art, so I won’t go into details here) is passed through a 960-mesh sieve, and the diatomite with a particle size of 950 mesh is screened. Standby; the limestone is passed through a 240-mesh sieve, and the limestone with a particle size of 240 mesh is obtained after screening.

[0051] Aggregate mixing: Add limestone, clay, silica fume, talcum powder and diatomaceous earth to 1 / 3 of the total amount of water according to the addition amount in Table 1, stir and mix at a speed of 400r / min for 20min, and then send it into a ball mill Ball milling was carried out, and mixture A was obtained after ball milling for 15 minutes.

[0052] Auxiliary mixing: According to the addition amount in Table 1, add silicone-acrylic emulsion, alkali-resistant glass fiber, defoamer, and...

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Abstract

The invention relates to the technical field of cement materials, in particular to a high-strength anti-seepage cement, comprising the following raw materials in parts by weight: 80-120 parts of limestone, 10-20 parts of clay, 15-30 parts of silica fume, and 10-20 parts of talcum powder 3-8 parts of diatomite, 2-8 parts of hollow glass microspheres, 5-10 parts of alkali-resistant glass fiber, 1-10 parts of silicone acrylic emulsion, 1-3 parts of expansion agent, 1-3 parts of dispersant, 0.5-2 parts of defoamer and 100-180 parts of water, the weight ratio of the alkali-resistant glass fiber and hollow glass microspheres is 1-4, the diameter of the alkali-resistant glass fiber is 2-10 μm, and the length is 8-15mm, the diameter of the hollow glass microspheres is 50-100 μm; the present invention also provides the processing technology of the above-mentioned high-strength impermeable cement, the hollow glass microspheres are added in three times, and at a speed of 50-80r / min It is prepared by stirring and mixing, so that the hollow glass microspheres can ensure the structural integrity, and the cement can meet higher strength and improve the impermeability performance.

Description

technical field [0001] The invention relates to the technical field of cement materials, in particular to a high-strength anti-seepage cement and a processing technology thereof. Background technique [0002] Cement is the most commonly used and high-strength building material in modern buildings. It is used in building construction, ground road construction, etc. As the carrier of compressive load bearing, the strength of cement is required to be high. In the process of cement processing, in order to improve its structural strength, aggregates with higher strength will be added to the raw material components as a strength support. The more aggregates added, although the strength of cement can be improved, but each in the cement Due to the large cohesion between large particle aggregates, the dispersion is relatively uneven; in order to relatively reduce cohesion and improve dispersibility, dispersants, surfactants, polymer emulsions, etc. will be added to improve aggregate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B7/26C04B7/36
CPCC04B7/26C04B7/36Y02P40/10
Inventor 安康
Owner 河北曲寨矿峰水泥股份有限公司