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Cement Alkali Inhibitor Additive

An additive and cement technology, applied in the field of cement additives, can solve the problems of abnormal structural expansion cracks, affecting the appearance of buildings, decoration failure, etc., and achieve the effects of reducing carbonation depth, inhibiting efflorescence, and improving strength.

Active Publication Date: 2016-08-10
郭太宗
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  • Summary
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Cement efflorescence has always been a technical problem that is difficult to overcome in the construction industry. Efflorescence will affect the appearance of buildings, and it is prone to delamination, which will lead to failure of decoration, and even cause abnormal expansion cracks in the structure.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] An alkali inhibitory additive for cement is composed of the following raw materials in proportion by weight: sodium polyphosphate 9%, ferrous sulfate 6%, sodium nitrite 3%, sodium dodecylbenzenesulfonate 7%, aluminum potassium sulfate 18% %, sodium silicate 25%, water reducing agent 17%, silicone 15%.

Embodiment 2

[0010] An alkali inhibitory additive for cement is composed of the following raw materials by weight: 6% of sodium polyphosphate, 8% of ferrous sulfate, 1% of sodium nitrite, 10% of sodium dodecylbenzenesulfonate, 15% of potassium aluminum sulfate %, sodium silicate 28%, water reducing agent 14%, silicone 18%.

Embodiment 3

[0012] An alkali inhibitory additive for cement is composed of the following raw materials in proportion by weight: 12% of sodium polyphosphate, 3% of ferrous sulfate, 6% of sodium nitrite, 4% of sodium dodecylbenzenesulfonate, and 21% of potassium aluminum sulfate. %, sodium silicate 23%, water reducing agent 13%, silicone 18%.

[0013] The above-mentioned cement alkali inhibitory additive is added to the cement-based material, and 100 parts (weight) of the cement-based material is added with 0.5 to 0.8 part of the cement alkali inhibitory additive. The strength of the product can effectively improve the weather resistance of the cement product and reduce the carbonation depth of the cement product. It has high promotion and application value.

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Abstract

The invention provides a cement alkali resistance additive with alkali resistance, enhancement, weather ability and carbonization resistance, and a preparation method thereof. The cement alkali resistance additive is used through the steps of adding 0.5-0.8 parts of the cement alkali resistance additive to 100 parts (by weight) of a cement-based material and through uniformly stirring. The cement alkali resistance additive overcomes the building industry problem of easy saltpetering of cement materials, improves the strength of cement products, effectively improves the weather ability of the cement products and increases the carbonization resistance of the cement products.

Description

technical field [0001] The invention relates to a cement additive, in particular to a cement alkali-suppressing additive capable of inhibiting the efflorescence of cement, increasing the strength of the cement and improving the weather resistance of the cement, and a preparation method thereof. Background technique [0002] Since the advent of Portland cement in the United Kingdom more than 180 years ago, it has been widely used in civil engineering, water conservancy, national defense and other projects as an important cementitious material. The main components of Portland cement are calcium oxide, silicon oxide, aluminum oxide and iron oxide, which are calcined at high temperature into tricalcium silicate, dicalcium silicate, tricalcium aluminate, tetracalcium iron aluminate, and some free oxides. Calcium, tricalcium silicate, dicalcium silicate and water react to form calcium hydroxide during the hydration reaction of cement, and free calcium oxide due to calcination and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42
Inventor 郭太宗
Owner 郭太宗
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