Cement-base osmotic crystalline waterproof material and its production process

Abstract

The invention discloses a cement base osmotic crystallizing waterproof material and its producing process, including the following components in weight percent: ordinary Portland cement 35%-55%, calcium carbonate 5%-20%, silca sand 25%-50%, osmotic crystallizing active mother material 1%-5%, methyl cellulose MHEC15000PFR 0.05% -0.2%, methyl cellulose MHEC20000PFR 0.05%-0.2%, BaiErLe 4330-3 0-2.5%, and encrypted microsilicon, and the producing process includes in turn: screening, mixing, feeding, blending, checking, and packaging and storing. And the waterproof material forms crystallized waterproof protective layers in the micropores of the cement base to stop exudation of water, and the waterproofing and ant moistureproofing effects are permanent and the adhesion of the waterproof material onto the surfaces of the concrete poured in advance, and the performance is stable and the strength is high.

Description

technical field [0001] The invention relates to a material for construction engineering, more specifically to a cement-based permeable crystalline waterproof material used for waterproofing and anti-seepage of the flat and vertical surfaces of concrete structures and its production process. Background technique [0002] In construction engineering, many buildings have requirements for waterproofing and leakage, such as underground garages, tunnels, culverts, swimming pools, sewage treatment pools, and exterior walls of buildings. Ordinary concrete cement has poor impermeability and waterproof performance, and water can penetrate through the micropores of ordinary concrete cement. For this reason, in general construction, use waterproof coils or coatings to isolate the water source on the upstream or back surface of ordinary concrete. This construction is complicated and the waterproof effect is difficult to guarantee. Recently, patent publication (...

AI Technical Summary

Problems solved by technology

Ordinary concrete cement has poor impermeability and waterproof performance, and water can penetrate through the micropores of ordinary concrete cement.

For this reason, in general construction, waterproof coils or coatings are used to isolate the water source on the front or back surface of ordinary concrete. This kind of construction is complicated and the waterproof effect is not easy to guarantee.

Recently, patent publication (announcement) Nos. CN1587173 and CN1472258 have respectively introduced cement-based osmotic crystalline waterproof material and its production process and construction method and cement-based osmotic crystalline waterproof material and preparation method thereof for construction. This waterproof material is mostly compatible with water After mixing, paint on the concrete surface or sprinkle it directly on the newly poured concrete surface in the form of dry powder. This kind of waterproof effect is unstable, and it is difficult to fill the existing cracks on the concrete surface.