180 MPa ultra-high-performance concrete and preparation method thereof

Abstract

The invention discloses 180 MPa ultra-high-performance concrete and a preparation method thereof. The concrete comprises the following components in parts by weight: 800-810 parts of Portland cement, 300-400 parts of fly ash microbeads, 150-200 parts of silica fume, 800-1,000 parts of silica sand, 150-200 parts of steel fibers, 22-26 parts of a polycarboxylic acid type water reducer, 0.1-0.3 part of a defoaming agent and 209-236 parts of water. The configured ultra-high-performance concrete does not need special raw materials, is low in cost, and is energy-saving and environmentally friendly; and while the strength of the concrete can be improved, the mobility of the concrete is greatly improved. Meanwhile, the concrete further has ultra-high tensile strength, excellent toughness and excellent durability.

Description

Technical field [0001] The invention relates to the technical field of building materials, in particular to a 180MPa ultra-high performance concrete and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, the engineering structure is developing in a higher, larger and stronger direction, which puts forward new requirements on 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 weight of the ultra-high performance concrete structure is about 1 / 3 or 1 / 2 of that of the traditional concrete structure, which can effectively reduce the weight of the structure and save ma...

AI Technical Summary

Problems solved by technology

[0003] At present, for ultra-high performance concrete, although there have been a small number of engineering applications, most of them are still in the laboratory research stage. The existing ultra-high performance concrete is often cured at high temperature or autoclaved during production, and the complex production process limits ultra-high performance concrete. Application of High Performance Concrete in Practical Engineering