Carbonization-resistant waterproof slurry

Abstract

The invention relates to a carbonization-resistant waterproof slurry. The carbonization-resistant waterproof slurry is a double-component organic / inorganic material composite slurry, and comprises cement, quartz powder, redispersible latex powder, cellulose ether, a super plasticizer, a water repellent, a carbonization inhibitor, an emulsion, water, an antifoaming agent, and an antiseptic. The carbonization inhibitor is prepared by modifying a mixture of calcium oxide and calcium montmorillonite powder with mineral oil, and effect controlling on release of active ingredients of the carbonization inhibitor can be realized via modification, so that compact and uniform waterproof layers are formed from the surface to the internal part of a coating thin layer, moisture penetration is prevented with high efficiency, excellent carbonization resistance and water resistance are obtained, and service life of the coating layer and concrete protection term are prolonged. Compatibility of the carbonization-resistant waterproof slurry with inorganic materials such as cement is excellent, and excellent carbonization resistance and water resistance can be obtained by a functional thin layer with a thickness of 1 to 2mm.

Description

technical field [0001] The invention relates to a waterproof slurry, in particular to an anti-carbonization waterproof slurry, which belongs to the technical field of waterproof materials in the construction industry. Background technique [0002] The so-called "carbonation" refers to the generation of Ca(OH) after the cement of the mixed concrete is hydrated. 2 , most of which exist in the concrete in a crystalline state, and become a reserve of pore fluid to maintain high alkalinity, and its pH value is 12.5~13.5. CO exists in the air 2 and moisture, CO in the air 2 It will penetrate into the concrete under the action of water and Ca(OH) 2 Reaction, reduce the pH value to 8.5~9.0, at this time the concrete has been carbonized. Carbonation of concrete is essentially a process in which the pH value of concrete decreases and loses its alkalinity. [0003] Concrete maintaining an alkaline environment is an important condition for the preservation of concrete structures an...

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Problems solved by technology

[0007] Some published patent applications, such as CN 102503300A disclose a kind of ordinary Portland cement, dispersible latex powder, quartz sand, quartz powder, cellulose ether, One-component polymer cement waterproof mortar composed of silica fume, water reducing agent and defoamer; CN 10343969 A discloses a kind of ordinary Portland cement 52.5, granulated blast furnace powder 95#, penetrating agent (fatty alcohol polyoxygen Vinyl ether), expansion agent (ettringite or calcium hydroxide, magnesium hydroxide), silica fume, quartz sand, modified bentonite, modified sodium silicate, complexing agent (polyacrylic acid), crystal precipitation agent (polyethylene Diol) to prevent cement leakage crystalline waterproof coatings, etc., its anti-carbonization ability is still not ideal enough

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