Water-proof nanometer cement and production thereof

Abstract

A nano waterproof cement and its production are disclosed. The water-proof cement consists of nanometer SiO-xA380 2-3%, Al(OH)3 1-2%, CaO 5-6%, S(COOH)3F3 5-6%, polycrystalline Si granule 0.05-0.1%, Al powder 0.05-0.1%, pure Ca granule 0.1-0..5%, Na2S2O8 0.6-1.7% and cement 80-85%. The process is carried out by using SiO-xA380, Al(OH)3, CaO and S(COOH)3F3 to prepare active calcium aluminosilicate base metal, using polycrystalline Si, Al powder and pure Ca to prepare calcium aluminosilicate reductive powder and oxidation reacting from Na2S2O8 to obtain nanometer water-proof cement. It can be used for waterproof coating, concrete and water reducer.

Description

Technical field: [0001] The present invention relates to a kind of cement and its preparation method. In particular, a nanometer waterproof cement and a preparation method thereof. Background technique: [0002] As a building material with cement as the main material, concrete, because the solidified structure is spongy, the crystal is relatively rough, and it is not easy to block water molecules. Therefore, when concrete is simply used in waterproofing projects, the waterproof performance is relatively poor. Poor, can not meet the waterproof requirements. [0003] In order to improve the waterproof performance of concrete, the method of increasing the concrete ingredients can be used to make the concrete structure compact after solidification, shrink, disperse and reduce the sponge cavity, so that water molecules are not suitable for penetration, so as to improve the waterproof performance. [0004] However, according to the current cement structure theory, it is difficul...

AI Technical Summary

Problems solved by technology

[0009] 2. When the uncrystallized state in the original concrete is transformed into a crystalline state, due to the lack of input of external crystalline substances, the sponge voids and structural defects in the concrete are not easy to be fully compensated

These irreparable defects will still become a hidden danger of leakage

[0010] 3. In the concrete with excessive free CaO, because ionic Ca is not easy to form crystals, if the free Ca is dissociated into ionic form, the loss of Ca will be accelerated instead, and the strength of concrete will decrease.

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