Eco-concrete with compressive strength of 120-200 MPa and preparation method thereof

Abstract

The invention discloses eco-concrete with compressive strength of 120-200 MPa and a preparation method thereof. The eco-concrete consists of the following components in parts by weight: 600-750 parts of eco-cement, 400-450 parts of fly ash microspheres, 1000-1600 parts of sand, 150-160 parts of steel fibers, 8-12 parts of a high-efficiency water reducing agent, 0.1-0.3 part of a defoaming agent and 156-210 parts of water. The eco-cement consists of a powder material and an additive, wherein the powder materials is at least one selected from a group consisting grey rock, limestone, volcano ash, volcano pumice, basalt, illite, montmorillonite, feldspar, shale, kaolin, clay, wollastonite, gangue, silica fume and fly ash, and the additive is at least one selected from a group consisting of halides, carbonates, sulfates, alkaline substances of amine, silicates, aluminates, alkali metal hydroxides and alkaline-earth metal hydroxides. The eco-concrete has low costs, is energy saving and environmentally friendly, has easily achievable raw materials, has good fluidity, and is easy for construction.

Description

technical field [0001] The invention relates to concrete and a preparation method thereof, in particular to an ecological concrete with a compressive strength of 120-200 MPa and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, engineering structures are developing towards higher, larger and stronger directions, which put forward new requirements for the performance of concrete. With the advancement of science and technology, ultra-high performance concrete is one of the main directions to solve this problem. Ultra-high performance concrete has good durability and can greatly increase the service life of concrete structures. At the same time, it also has excellent mechanical properties and can greatly reduce the size of components. Generally speaking, the self-weight of ultra-high-performance concrete structures is about 1 / 3 or 1 / 2 of that of traditional concrete structures, which can effectively reduce the self...

AI Technical Summary

Problems solved by technology

[0005] Cement is currently the most commonly used cementitious material. However, on the one hand, cement production consumes a lot of energy, accounting for 15% of the world's total energy consumption. my country's annual cement production is more than 200 million tons, ranking first in the world, but my country's cement unit energy consumption It reaches 5280KJ / kg, which is 60% higher than the average unit energy consumption of cement in the world of 3260KJ / kg, and the problem of energy consumption in production is particularly prominent

On the other hand, our country is very rich in various mineral resources, and there is a large backlog of industrial waste residues, occupying a large area of ​​land and polluting the environment, which urgently needs to be developed and utilized.

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