High-strength thermal-insulation concrete and preparation method thereof

An insulating concrete and high-strength technology, applied in the field of building materials, can solve the problems of unsuitable high-strength concrete, high dry density of foamed concrete, poor compressive strength, etc. Effects of impact properties and compressive strength

Active Publication Date: 2019-09-03
北京建工一建工程建设有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the application of foam concrete in various fields has not been widely used, mainly due to the high dry density and poor compressive strength of foam concrete, which is not suitable for special fields that require high-strength concrete.

Method used

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  • High-strength thermal-insulation concrete and preparation method thereof
  • High-strength thermal-insulation concrete and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-3

[0037] In Preparation Examples 1-3, the PVA was selected from PVA117 sold by Guangzhou Liaohua Chemical Co., Ltd., and the water glass was selected from the water glass with the product number 001 sold by Jinan Shengyilong Chemical Technology Co., Ltd.

preparation example 1

[0038]Preparation example 1: (1) cleaning the waste rubber particles and soaking them in a saturated solution of sodium hydroxide for 10 hours; (2) dissolving PVA in water at 80° C. to make an aqueous solution with a concentration of 1%, adding the waste rubber particles into the aqueous solution, After mixing evenly, grind and dry, add water glass, stir evenly, soak for 30 minutes, and dry at 50°C. The mass ratio of waste rubber particles to aqueous solution and water glass is 1:1.5:1.3, and the particle size of waste rubber particles is from 3mm rubber particles and rubber particles with a particle size of 0.38mm are mixed according to a mass ratio of 1:1 to make water glass with a concentration of 40%, a modulus of 2.7, a density of 1.23g / mL, and Na 2 O content is 12.3%, SiO 2 The content is 35%.

preparation example 2

[0039] Preparation example 2: (1) cleaning the waste rubber particles and soaking them in a saturated solution of sodium hydroxide for 13 hours; (2) dissolving PVA in water at 85° C. to make an aqueous solution with a concentration of 1.3%, adding the waste rubber particles into the aqueous solution, After mixing evenly, grind and dry, add water glass, stir well, soak for 35 minutes, and dry at 55°C. The mass ratio of waste rubber particles to aqueous solution and water glass is 1:1.8:1.4, and the particle size of waste rubber particles is from 4mm rubber particles and 0.6mm rubber particles are mixed according to the mass ratio of 1:1.1, the concentration of water glass is 45%, the modulus is 2.8, the density is 1.28g / mL, Na 2 O content is 12.7%, SiO 2 The content is 36%.

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Abstract

The invention discloses high-strength thermal-insulation concrete, a preparation method and uses thereof, wherein the high-strength thermal-insulation concrete comprises, by weight, 240-250 parts of Portland cement, 720-740 parts of sand, 50-60 parts of fly ash, 60-70 parts of mineral powder, 810-830 parts of stone, 35-55 parts of hollow glass micro-beads, 6-9 parts of a naphthalene-based efficient water reducing agent, 180-200 parts of water, 120-125 parts of modified rubber particles, 70-75 parts of regenerated micro-powder, 10-15 parts of stone powder, 5-10 parts of silica fume, and 10-15 parts of aluminum silicate fiber. According to the present invention, the high-strength thermal-insulation concrete has the physical and mechanical properties of ordinary concrete, has good thermal insulation performance, and meets the advantages of environmental protection building materials.

Description

technical field [0001] The invention relates to the technical field of building materials, more specifically, it relates to a high-strength thermal insulation concrete and a preparation method thereof. Background technique [0002] At present, more than 93% of the building structures at home and abroad are reinforced concrete structures, and the concrete used in these building structures is ordinary concrete. Ordinary concrete has good compressive performance, but its thermal conductivity reaches about 1.8W / m·k , The thermal insulation performance is very poor, so in order to make the building meet the needs of people and equipment for room temperature, effective measures such as internal / external insulation layers are used in the peripheral structure to reduce indoor and outdoor heat exchange, so as to achieve the effect of thermal insulation. [0003] In order to improve the poor insulation performance of ordinary concrete, an insulation layer needs to be added to the inne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
CPCC04B28/04C04B2111/27C04B2111/52C04B2201/32C04B2201/50C04B14/06C04B18/08C04B18/141C04B14/02C04B14/24C04B14/4656C04B14/185C04B14/064C04B18/22C04B18/167C04B18/146C04B2103/302C04B14/047C04B14/08C04B14/104
Inventor 陈兵鲁楠冯琳李众谋王悦
Owner 北京建工一建工程建设有限公司
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