Water-resistant dispersion concrete and preparation method thereof

A water-resistant dispersion and concrete technology, applied in the field of building materials, can solve the problems of longer construction period, increased engineering cost, decreased strength, etc. Effect

Active Publication Date: 2022-03-01
CHINA ROAD & BRIDGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When ordinary concrete is poured directly in a water environment, it will be affected by water and cause separation, cement loss, and strength decline and cause environmental pollution.
The cofferdam water isolation method is usually used to solve the ...

Method used

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  • Water-resistant dispersion concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] A water-resistant dispersion concrete, calculated in parts by weight, comprising the following components: 300 parts of cement; 60 parts of fly ash; 600 parts of regenerated fine aggregate; 800 parts of regenerated coarse aggregate; 100 parts of regenerated fine powder; 5 parts; 100 parts of metakaolin; 160 parts of modified nano-silica dispersion; 3 parts of organosilane; 1 part of polyvinyl alcohol; 5 parts of polymethyl acrylate; 3 parts of triethanolamine; 1 part of polyacrylamide; polyethylene glycol 1 part and 6 parts polypropylene fiber.

[0049] Its preparation method is as follows:

[0050] (1) Weigh each component according to the ratio of raw materials, first add the weighed cement, fly ash, recycled fine aggregate, recycled coarse aggregate, recycled fine powder, metakaolin, and synthetic fiber, and stir for 2 minutes;

[0051] (2) add water reducer, modified nano-silica dispersion, organosilane, polyvinyl alcohol to the product obtained in step (1) again, ...

Embodiment 2

[0055] A water-resistant dispersion concrete, calculated in parts by weight, comprising the following components: 600 parts of cement; 200 parts of fly ash; 800 parts of recycled fine aggregates; 1,100 parts of recycled coarse aggregates; 200 parts of recycled fine powder; 15 parts; 200 parts of metakaolin; 240 parts of modified nano-silica dispersion; 10 parts of organosilane; 5 parts of polyvinyl alcohol; 15 parts of polymethyl acrylate; 5 parts of triethanolamine; 3 parts of polyacrylamide; polyethylene glycol 5 parts and 6 parts polyvinyl alcohol fiber.

[0056] (1) Weigh each component according to the ratio of raw materials, first add the weighed cement, fly ash, recycled fine aggregate, recycled coarse aggregate, recycled fine powder, metakaolin, and synthetic fiber, and stir for 2 minutes;

[0057] (2) add water reducer, modified nano-silica dispersion, organosilane, polyvinyl alcohol to the product obtained in step (1) again, and stir for 3min;

[0058] (3) adding po...

Embodiment 3

[0061] A water-resistant dispersion concrete, calculated in parts by weight, comprising the following components: 400 parts of cement; 100 parts of fly ash; 750 parts of recycled fine aggregate; 1000 parts of recycled coarse aggregate; 150 parts of recycled fine powder; 10 parts; 150 parts of metakaolin; 180 parts of modified nano-silica dispersion; 6 parts of organosilane; 3 parts of polyvinyl alcohol; 10 parts of polymethyl acrylate; 4 parts of triethanolamine; 23 parts of polyacrylamide; 3 parts alcohol and 6 parts synthetic fibers.

[0062] (1) Weigh each component according to the ratio of raw materials, first add the weighed cement, fly ash, recycled fine aggregate, recycled coarse aggregate, recycled fine powder, metakaolin, and synthetic fiber, and stir for 2 minutes;

[0063] (2) add water reducer, modified nano-silica dispersion, organosilane, polyvinyl alcohol to the product obtained in step (1) again, and stir for 3min;

[0064] (3) adding polymethyl acrylate, tri...

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Abstract

The invention belongs to the technical field of building materials, and particularly relates to water-dispersion-resistant concrete and a preparation method thereof, and the water-dispersion-resistant concrete comprises the following components by weight: 300-600 parts of cement; 60 to 200 parts of fly ash; 600 to 800 parts of recycled fine aggregate; 800 to 1100 parts of recycled coarse aggregate; 100 to 200 parts of regenerated micro powder; 5-15 parts of a water reducing agent; 100 to 200 parts of metakaolin; 160 to 240 parts of a modified nano silicon oxide dispersion liquid; 3 to 10 parts of organosilane; 1-5 parts of polyvinyl alcohol; 5 to 15 parts of polymethyl acrylate; 3 to 5 parts of triethanolamine; 1 to 3 parts of polyacrylamide; 1-5 parts of polyethylene glycol and 0-6 parts of synthetic fiber. The water-resistant dispersion concrete provided by the invention realizes direct pouring of concrete in water, no segregation when encountering water, no loss of cement, self-leveling and self-compacting when entering water, no need of vibration, no environmental pollution to construction water areas, uniform and reliable concrete quality, and significant positive influence on durability, workability and cost control of underwater concrete.

Description

technical field [0001] The invention belongs to the technical field of building materials and relates to concrete, in particular to a water-resistant dispersion concrete and a preparation method thereof. Background technique [0002] So far, in underwater engineering, concrete is still one of the most important and largest building materials. The performance of concrete will directly affect the quality and progress of underwater projects. When ordinary concrete is directly poured in a water environment, it will be affected by water, resulting in separation, cement loss, strength decline, and environmental pollution. The cofferdam water isolation method is usually used to solve the problem of underwater pouring of concrete, but this method will complicate the construction process, lengthen the construction period, greatly increase the project cost, and it is difficult to ensure the quality of underwater concrete. [0003] In view of the defects existing in the above-mention...

Claims

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Application Information

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IPC IPC(8): C04B28/00C04B18/16C04B111/20C04B111/74
CPCC04B28/00C04B18/16C04B2201/50C04B2111/20C04B2111/74C04B18/08C04B2103/302C04B14/106C04B14/062C04B24/42C04B24/2623C04B24/2641C04B24/122C04B24/2652C04B24/32C04B16/0633C04B16/0641C04B16/06Y02W30/91
Inventor 郭猛宋普涛肖瑶夏京亮龙行王晶吕欢杨清源王祖琦周永祥冷发光
Owner CHINA ROAD & BRIDGE
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