High-performance light-weight aggregate concrete and preparation method thereof

Abstract

The invention discloses high-performance light-weight aggregate concrete and a preparation method thereof. When aggregate is rubble type light-weight aggregate, the concrete contains the following components in parts by weight: 187.5 parts of coal ash, 0-75 parts of silica ash, 300-375 parts of cement, 554 parts of light-weight aggregate, 540-564 parts of sand, 182 parts of water and 5.6 parts of a water reducing agent; when the aggregate is spherical light-weight aggregate, the concrete contains the following components in parts by weight: 0-187.5 parts of coal ash, 0-100 parts of silica ash, 530 parts of light-weight aggregate, 566-669 parts of sand, 153-172 parts of water and 4.25-4.781 parts of a water reducing agent. The slump loss in 1 hour of the prepared high-fluidity light-weight aggregate is smaller than 15 mm, no light-weight aggregate floats upwards, and the compressive strength is higher than 65.0 MPa.

Description

technical field [0001] The invention belongs to the field of inorganic non-metal, and in particular relates to a high-light aggregate concrete and a preparation method thereof. Background technique [0002] High Performance Concrete (HPC) is a new concept of concrete proposed by some developed countries based on the durability design of concrete structures in the late 1980s and early 1990s. It takes durability as the primary design index. This concrete It is possible to provide a service life of more than 100 years for infrastructure projects. China defines high-performance concrete in the "Technical Regulations for the Application of High-Performance Concrete" (CECS207-2006) as: it is produced using conventional materials and processes, has various mechanical properties required by concrete structures, and has high durability, high workability and high volume. stable concrete. [0003] Different from traditional concrete, high-performance concrete is a new type of high-te...

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Problems solved by technology

[0013] Aiming at the deficiencies in the prior art, the object of the present invention is to provide a high-light aggregate concrete and its preparat...

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