High-strength self-compaction thermal-insulation concrete

Abstract

Disclosed high-strength self-compaction thermal-insulation concrete is prepared by taking a self-compaction concrete technology as a basis, taking sea-mud-texturized high-performance spherical high-strength ceramic particle as an aggregate and scientifically mixing with cement, fly ash, graded sand, water, an efficient water reducer and cellulose ether. The obtained high-strength self-compaction thermal-insulation concrete has the dry apparent density of 1200-2000 Kg / m<3>, the 28-day compressive strength of 15-60 MPa, the heat conduction coefficient of 0.15-0.5 W / (m*K), the slump flow of 650-750 mm, the slump flow time of 3-4 s and the slump of 250 mm or more, also has light weight, high strength, high thermal-insulation performance and self-compaction performance during pouring, is capable of solving the problems that lightweight aggregates float upwards, are separated when being pumped and the like during pouring vibration of conventional high-strength thermal-insulation concrete, and is widely applied to bearing and non-bearing walls, floorslabs, roof boards, wallboards and other in-situ casted and prefabricated parts in energy-saving buildings.

Description

technical field [0001] The invention belongs to the field of concrete materials, and in particular relates to a high-strength self-compacting heat-preservation concrete prepared by using sea clay high-performance spherical ceramsite as an aggregate. Background technique [0002] In recent years, with the improvement of building energy-saving requirements, domestic and foreign research on non-load-bearing insulation concrete has begun to turn to load-bearing insulation integrated concrete research. At the beginning of this century, Li Zhu and Zhang Zeping began to study the application of inorganic lightweight aggregate mainly composed of vitrified microbeads in load-bearing thermal insulation concrete (vitrified microbead thermal insulation concrete (ZL 200610012726.2), inorganic thermal insulation load-bearing concrete (ZL 200910015208.9)), and make high-strength thermal insulation concrete gradually applied in engineering. However, the existing high-strength thermal insul...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a high-strength self-compacting thermal insulation concrete, which has light weight, high strength, high thermal insulation performance and self-compacting performance during pouring, which can solve the problem of floating of light aggregates in traditional high-strength thermal insulation concrete when pouring and vibrating. There are problems such as segregation during pumping, and it has excellent construction performance. It can be widely used in cast-in-place and prefabricated components such as load-bearing and non-load-bearing walls, floors, roof panels, and wall panels in energy-saving buildings.