Lightweight thermal insulation concrete and preparation method thereof

A thermal insulation concrete, lightweight technology, applied in the field of concrete, can solve problems such as low strength, and achieve the effects of enhancing comprehensive performance, improving thermal insulation performance, and increasing strength

Inactive Publication Date: 2019-10-11
SHAANXI SCI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of lightweight concrete is not only widely used in roof insulation, wall filling and other thermal insulation enclosure structures and thermal structures, but also in other civil engineering fields such as industrial buildings, bridges and tunnels. Alt

Method used

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  • Lightweight thermal insulation concrete and preparation method thereof
  • Lightweight thermal insulation concrete and preparation method thereof
  • Lightweight thermal insulation concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1:

[0019] The light-weight thermal insulation concrete provided in Example 1 has the smallest thermal conductivity and is made of the following raw material components in mass percentages: 40% cementitious material, 9.0% expanded pearl, 0% sand, 9.1% vitrified beads, Hemp fiber 1.5%, ultrafine mineral powder 13% and water 26.7%.

Example Embodiment

[0020] Example 2

[0021] The light-weight thermal insulation concrete provided by this embodiment 2 has high strength and is made of the following raw material components in mass percentages: 36% of cementitious material, 7% of expanded pearls, 30% of sand, 6% of vitrified beads, Hemp fiber 1.1%, superfine mineral powder 2% and water 19%.

Example Embodiment

[0022] Example 3

[0023] The light-weight thermal insulation concrete provided in the third embodiment weighs the optimal ratio of strength and thermal conductivity, and is made of the following raw material components in mass percentages: 33% cementitious material, 8% expanded pearl, 15% sand, Vitrified microbeads 6.7%, hemp fiber 1.3%, superfine mineral powder 11% and water 22%.

[0024] The preparation methods of the lightweight thermal insulation concrete of Examples 1-3 are as follows:

[0025] 1) Prepare each raw material component according to the mass percentage ratio:

[0026] 2) The expanded perlite and vitrified microbeads are weighed according to the ratio, poured into a mixing tank and stirred for 15S. After mixing, add water with additional water and stir for 15S, and then add the evenly mixed cementitious material and stir for 15S to make light aggregate The cementing material is uniformly attached to the surface; the additional water consumption is obtained by measur...

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Abstract

The invention discloses lightweight thermal insulation concrete and a preparation method thereof, and belongs to the technical field of concrete. The lightweight thermal insulation concrete is prepared from, by mass, 33-71% of a cementing material, 7-37% of expanded perlite, 0-30% of sand, 6-38% of vitrified microbeads, 0-1.5% of bast fiber, 2-13% of ultrafine mineral powder and 19-27.4% of water.The invention further discloses a preparation method of the lightweight thermal insulation concrete. According to the lightweight thermal insulation concrete, perlite serves as coarse aggregate, vitrified microbeads and sand serve as fine aggregate, and by adding the natural bast fiber, the properties of crush resistance, tensile strength, bending resistance, shock resistance and the like of concrete are optimized; tests verify that the two thermal insulation materials of the vitrified microbeads and expanded perlite are matched with each other, the thermal insulation property of the lightweight thermal insulation concrete such as thermal insulation lightweight aggregate can be improved. By mixing a small quantity of sand, the strength can be improved on the premise that the concrete lightweight and thermal insulation properties are guaranteed, and the comprehensive performance is enhanced.

Description

technical field [0001] The invention relates to the technical field of concrete, in particular to a lightweight thermal insulation concrete and a preparation method thereof. Background technique [0002] With the development of science and technology, the application fields of lightweight thermal insulation concrete such as thermal insulation lightweight aggregate concrete are constantly expanding, and the application value is constantly improving. This kind of lightweight concrete is not only widely used in roof insulation, wall filling and other thermal insulation enclosure structures and thermal structures, but also in other civil engineering fields such as industrial buildings, bridges and tunnels. Although the commonly used aerated concrete and Foam concrete has good thermal insulation performance, but both have the problem of low strength. Therefore, we propose a lightweight thermal insulation concrete with good thermal insulation performance and strength. Contents o...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B111/40
CPCC04B28/04C04B2111/40C04B18/141C04B14/185C04B14/06C04B14/24C04B18/248
Inventor 陈丽红孟宏睿张科强
Owner SHAANXI SCI TECH UNIV
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