Self-insulation high-strength environment-friendly concrete and preparation method thereof

Abstract

The invention discloses self-insulation high-strength environment-friendly concrete. The concrete is prepared from the following raw materials in parts by weight: 200 to 250 parts of cement, 50 to 100parts of mineral powder, 55 to 65 parts of fine sand, 30 to 40 parts of fly ash, 15 to 25 parts of improved styrene resin, 10 to 20 parts of activated bentonite, 5 to 15 parts of an interface agent,4 to 10 parts of a water reducing agent and 180 to 200 parts of deionized water. The cement is used as a matrix, the mineral powder, the fine sand and the fly ash are added as inorganic ingredients, and the mineral powder, the fine sand and the fly ash have small particle sizes and contain various active media, so that the mineral powder and the fly ash can be matched with the cement matrix, and the strength performance of the concrete is enhanced; the styrene resin is adopted in resin selection, on one hand, the comprehensive performance of the styrene resin is good; and on the other hand, after foaming of the foaming agent, a foaming body can be introduced into concrete, so that the heat loss is reduced, and the self-heat-preservation performance is achieved.

Description

technical field [0001] The invention belongs to the technical field of concrete. More specifically, it relates to a self-insulating high-strength environment-friendly concrete and a preparation method thereof. Background technique [0002] Concrete is a general term for engineering composite materials in which aggregates are cemented into a whole by cementitious materials. Generally speaking, the term concrete refers to the cement concrete obtained by using cement as the cementitious material, sand and stone as the aggregate; mixed with water (may contain admixtures and admixtures) in a certain proportion, and stirred. Concrete, which is widely used in civil engineering. [0003] Chinese patent document number CN104261747A discloses a kind of high-strength phenolic resin concrete, and its raw material weight ratio is as follows: phenolic resin is 27~29 parts; Xylene is 1.5~1.7 parts; Butyl acetate is 0.7~0.9 parts; Polyurethane is 6.8 to 7.2 parts; 1.2 to 1.4 parts of ben...

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Problems solved by technology

[0003] Chinese patent document number CN104261747A discloses a kind of high-strength phenolic resin concrete, and its raw material weight ratio is as follows: phenolic resin is 27~29 parts; Xylene is 1.5~1.7 parts; Butyl acetate is 0.7~0.9 parts; Polyurethane is 6.8 to 7.2 parts; 1.2 to 1.4 parts of benzaldehyde; 0.7 to 0.9 parts of acetone; 0.5 to 0.7 parts of K2CO3; 7 to 9 parts of cement; 9 to 11 parts of sand; 21 to 23 parts of gravel; disulfide Molybdenum is 7-9 parts, with an average particle size of 5 μm; water is 11-13 parts; in this document, the combination of phenolic resin and concrete base material can improve the strength and other properties, but the curing of the phenolic resin will affect the whole. Too much organic matter such as benzaldehyde, polyurethane, acetone, etc., the bonding performance between organic and inorganic is poor, which will reduce the overall performance

[0004] Although resin mixing methods can be used in concrete to improve the thermal insulation and strength properties of concrete, the interface compatibility between resin and concrete materials is poor, and the selection of resin types and improper handling will reduce the performance of concrete.

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