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Multifunctional concrete sealed curing agent

A technology of concrete and curing agent, applied in the field of cement concrete waterproof material, can solve the problems of concrete losing design performance, etc., and achieve the effect of simple use

Inactive Publication Date: 2012-07-18
NANJING EFFUL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Potassium and sodium-based silicates are prone to alkali-aggregate reaction or alkali-silicon reaction, causing internal stress in concrete, expansion and cracking, and loss of design performance of concrete

Method used

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  • Multifunctional concrete sealed curing agent

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A multi-functional concrete sealing curing agent, the mixing ratio is: 100g of aluminum sulfate solution with a mass percentage concentration of 10%, containing 0.2g of alkylphenol polyoxyethylene ether. Concrete surface water absorption, four groups of test results are listed in Table 1. The results of the impermeability test are: the maximum impermeability pressure of the concrete coated with the sealing and waterproofing agent is 1.4Mpa; the maximum impermeability pressure of the reference concrete is 0.6Mpa.

[0026] Table 1 Concrete surface water absorption unit: g / m 2

[0027] Soaking time plain concrete 2 times / 1 day 4 times / 2 days 6 times / 3 days 2 h 575 512 451 378 4 h 731 632 564 405

Embodiment 2

[0029] A multifunctional concrete sealing and curing agent, the mixing ratio is: 100g of aluminum sulfate solution with a mass percentage concentration of 20%, containing 0.3g of OP emulsifier. Concrete surface water absorption, four groups of test results are listed in Table 2. The results of the impermeability test are: the maximum impermeability pressure of the concrete coated with the sealing and waterproofing agent is 1.7Mpa; the maximum impermeability pressure of the reference concrete is 0.6Mpa.

[0030] Table 2 Concrete surface water absorption unit: g / m 2

[0031] Soaking time plain concrete 2 times / 1 day 4 times / 2 days 6 times / 3 days 2 h 575 444 352 202 4 h 731 555 422 241

Embodiment 3

[0033] A multifunctional concrete sealing and curing agent, the mixing ratio is: 100g of alum solution with a concentration of 5% by mass, and 0.2g of alkylphenol polyoxyethylene ether. The water absorption rate of the concrete surface and the comparison of the test results of the four groups are listed in Table 3. The results of the impermeability test are: the maximum impermeability pressure of the concrete coated with the sealing and waterproofing agent is 1.0Mpa; the maximum impermeability pressure of the reference concrete is 0.6Mpa.

[0034] Table 3 Concrete surface water absorption unit: g / m 2

[0035] Soaking time plain concrete 2 times / 1 day 4 times / 2 days 6 times / 3 days 2 h 575 531 470 401 4 h 731 671 603 462

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Abstract

The invention discloses a multifunctional concrete sealed curing agent, which consists of aluminum sulfate aqueous solution and surfactant. The curing agent is simple to use and is only required to be sprayed or brushed on the surface of concrete. Under the effect of the surfactant, the aluminum sulfate aqueous solution sprayed or brushed on the surface of the concrete can deeply seep into the concrete, wherein aluminum sulfate chemically reacts with calcium hydroxide in the concrete to generate ettringite needle crystals to block the capillary passages of the concrete, so as to take various effects such as compaction, enhancement, water prevention and curing.

Description

technical field [0001] The invention relates to a cement concrete waterproof material, in particular to an infiltration crystal waterproof material. Background technique [0002] At present, there are many external agents used for concrete sealing maintenance, hardening, and waterproofing, but most of them are potassium and sodium silicate materials as the main components, supplemented by a mixed aqueous solution of some functional additives, such as M1500 permanent waterproofing agent, TQN- Y concrete curing agent, Longge cement hardener, concrete sealing and curing agent, AITA concrete sealing and curing agent, MKF-002 concrete sealing and curing agent, etc. Potassium and sodium-based silicates are prone to alkali-aggregate reaction or alkali-silicon reaction, causing internal stress in concrete, expansion and cracking, and loss of design performance of concrete. It is now developed to use lithium-based silicate to overcome the shortcomings of alkali-silicon reaction. In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/50
Inventor 唐绍林王彦梅万建东徐红英杨丹唐修仁
Owner NANJING EFFUL