A kind of anti-seepage concrete and its preparation process

A technology of impermeable concrete and metakaolin, applied in the field of concrete, can solve the problems of poor impermeability and other problems, and achieve the effects of compact internal structure, reduction of capillaries, and improvement of structural density and strength

Inactive Publication Date: 2021-08-10
上海浦盈混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the problem in the prior art that a large number of voids and connected capillaries are easily formed inside the concrete, resulting in poor overall impermeability, the first purpose of the present invention is to provide an impermeable concrete to solve the above technical problems, It has good impermeability as a whole

Method used

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  • A kind of anti-seepage concrete and its preparation process
  • A kind of anti-seepage concrete and its preparation process
  • A kind of anti-seepage concrete and its preparation process

Examples

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Embodiment 1

[0046] Embodiment 1: A kind of anti-seepage concrete, each component and its corresponding parts by weight are shown in Table 1, and are prepared through the following steps:

[0047] Step 1: Stir and mix Portland cement, medium sand, gravel, mineral powder, ultra-fine fly ash and modified metakaolin in a drying barrel with a rotating speed of 500 rpm, a time of 30 minutes, and a temperature of Control at 90°C to form a mixture;

[0048] Step 2, adding the quartz powder of corresponding parts by weight into the mixture, fully mixing, the time is 10min, and the stirring speed is 500rpm to obtain the base material;

[0049] Step 3, adding sodium lignosulfonate in corresponding parts by weight into water, fully mixing, the time is 10 minutes, and the stirring speed is 300 rpm to form a mixed solution;

[0050] Step 4: Pour the mass of the base material into the mixed solution in 3 times, and carry out continuous stirring and mixing at a stirring speed of 800 rpm, and the stirrin...

Embodiment 2-8

[0054] Embodiment 2-8: An anti-seepage concrete. The difference from Embodiment 1 is that each component and its corresponding parts by weight are shown in Table 1.

[0055] Each component and parts by weight thereof in table 1 embodiment 1-8

[0056]

[0057]

Embodiment 9

[0058] Embodiment 9: A kind of impermeable concrete, the difference with embodiment 1 is, in step one, modified metakaolin is made by following steps:

[0059] S1. Put metakaolin in a container, add 4 times the amount of polyacrylic acid solution, adjust the pH to 3, control the temperature at 25°C, react for 12 hours, and use a stirrer to stir during the reaction to obtain a mixed solution;

[0060] S2. Vacuum filter the mixed solution to obtain the precipitate, then place the precipitate in an oven at 60°C for drying, rinse with ethanol, put it in an oven at 60°C for drying, and grind to obtain Modified metakaolin.

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Abstract

The invention discloses an anti-seepage concrete and a preparation process thereof, relates to the technical field of concrete, and solves the problem that a large number of voids and connected capillaries are easily formed inside the concrete, resulting in poor overall anti-seepage performance. An anti-seepage concrete, which includes the following components in parts by weight: 180-220 parts of water; 400-600 parts of stones; 700-800 parts of medium sand; 240-260 parts of Portland cement; 90-100 parts of mineral powder ; 40-70 parts of superfine fly ash; 60-100 parts of modified metakaolin; 3-5 parts of water reducing agent; 15-25 parts of reinforcing filler. The anti-seepage concrete in the present invention has a dense internal structure, fewer internal voids and connected capillaries, and has good anti-seepage performance as a whole.

Description

technical field [0001] The invention relates to the technical field of concrete, more specifically, it relates to an anti-seepage concrete and a preparation process thereof. Background technique [0002] Concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate, mixed with water, admixtures, and admixtures in a certain proportion, and is also called ordinary concrete. It is widely used in civil engineering . [0003] A Chinese invention patent with the publication number CN110117179A discloses an environmentally friendly antifreeze concrete and a preparation method thereof. The environmentally friendly antifreeze concrete includes the following components by weight: 240-260 parts of cement, 180-200 parts of water, 850 -870 parts of gravel, 770-790 parts of medium sand, 60-80 parts of mineral powder, 50-70 parts of fly ash, 4.36-10.36 parts of admixture, 1.25-3.25 parts of antifreeze, 30-45 parts of waste co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/04C04B111/27
CPCC04B28/04C04B2111/00293C04B2111/27C04B14/02C04B14/06C04B18/141C04B18/08C04B14/106C04B24/18
Inventor 顾江宏
Owner 上海浦盈混凝土有限公司
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