High-strength concrete admixture used for municipal construction

Abstract

A high-strength concrete admixture used for municipal construction includes: 10-30 parts of nano composite filler, 12-17 parts of epoxy-modified polysiloxane, 22-25 parts of polypropylmethylsesquiloxane, 0.5-1.5 parts of alkoxy silane, 2-8 parts of nano-SiO2, 1.2-1.8 parts of a thickener, 2.5-5.5 parts of a hydrophobic agent, 17-23 parts of silica fume, 12-13 parts of fly ash, 55-85 parts of granularity, 0.2-1.1 parts of redispersible rubber powder, 3.5-5 parts of raw gypsum powder, 11-14 parts of a water reducing agent, 13-18 parts of nano-TiO2, 13-17 parts of fatty amine polyoxyethylene ether, and 20-23 parts of polyoxyethylene stearate. The concrete admixture can effectively enhance anti-chloride-corrosion performance of concrete, thereby significantly improving the durability of the concrete and achieving excellent compression strength and water permeability.

Description

technical field [0001] The invention relates to a high-strength concrete admixture for municipal construction and belongs to the technical field of concrete. Background technique [0002] At present, in order to prevent concrete from being resistant to chlorine salt corrosion, most improvements are made in improving the strength level of concrete, increasing the thickness of the concrete protective layer, or painting corrosion-resistant coatings on the concrete surface. The above improvement measures cannot be fundamentally implemented in the existing construction environment. Inhibit the transmission of erosive media inside the concrete. In addition, with the rapid development of municipal construction, the rapid increase of hardened ground leads to the loss of urban concrete pavement and ground water permeability, and the sharp decrease of urban sponge body destroys the ecological balance. Water storage and flood diversion in municipal construction Loss of function. There...

AI Technical Summary

Problems solved by technology

[0002] At present, in order to prevent concrete from being resistant to chlorine salt corrosion, most improvements are made in improving the strength level of concrete, increasing the thickness of the concrete protective layer, or painting corrosion-resistant coatings on the concrete surface. The above improvement measures cannot be fundamentally implemented in the existing construction environment. Inhibit the transmission of erosive media inside the concrete. In addition, with the rapid development of municipal construction, the rapid increase of hardened ground leads to the loss of urban concrete pavement and ground water permeability, and the sharp decrease of urban sponge body destroys the ecological balance. Water storage and flood diversion in municipal construction loss of function