High-strength thermal insulation concrete and its preparation method

Abstract

The invention discloses a high-strength thermal insulation concrete, which comprises the following components in parts by weight: 210-220 parts of river sand, 220-230 parts of casing volcanic rock, 140-150 parts of gravel, and 120-125 parts of portland cement 18-20 parts of fly ash, 36-41 parts of self-made foaming adhesive, 2-3 parts of water reducing agent, and 80-90 parts of water. In the process of concrete preparation, casing volcanic stone is used as aggregate. Since casing volcanic stone has a three-layer cell structure and is coated layer by layer, the specific surface area of ​​casing volcanic stone increases. , so that there are more voids inside it, which increases the air content filled inside the casing volcanic rock, thereby improving its thermal insulation performance, which in turn improves the thermal insulation performance of the prepared concrete, and at the same time the volcanic rock itself has higher compressive strength. , the compressive strength is further increased after the polymer is filled in the pores, so that the concrete not only has high thermal insulation performance, but also has high compressive strength.

Description

Technical field [0001] The present invention belongs to the field of concrete preparation, relates to a high-strength insulation concrete and a preparation method thereof. Background [0002] Concrete is the most widely used material in civil engineering, but concrete has the disadvantages of poor compressive ability, high brittleness, easy water seepage, poor thermal insulation, etc., which in turn makes it easy to seep water from gaps when buildings and other residential buildings are built, and the thermal insulation effect is poor. [0003] In order to achieve high thermal insulation performance in the existing concrete preparation process, concrete is usually prepared into foam concrete, which can achieve its high thermal insulation performance, and its thermal conductivity can reach 0.18W / m.K, but the compressive strength of foam concrete is poor, which cannot be used for building load-bearing, which in turn affects the life of the building. [0004] In order to improve th...

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Problems solved by technology

[0002] Concrete is the most widely used material in civil engineering. However, concrete has disadvantages such as poor compressive capacity, high brittleness, easy water seepage, and poor thermal insulation performance, which makes it easy for water seepage through gaps and heat insulation when houses and other residential buildings are constructed. Poor insulation effect

[0003] In order to achieve high thermal insulation performance in the existing concrete preparation process, concrete is usually prepared as foam concrete, which can achieve high thermal insulation performance, and its thermal conductivity can reach 0.18W / m.K, but the resistance of foam concrete The compressive strength is poor and cannot be used for the load bearing of the building, which in turn affects the life of the building

[0004] In order to improve the strength of concrete in the existing concrete preparation process, polymer binders or polymer fibers are usually added to the concrete to fill the gaps of the concrete through the polymer, reduce the gap ratio of the concrete, and improve the strength of the concrete, but for The thermal insulation performance of concrete has no effect