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Full-light self-thermal-insulation concrete and preparation method

A technology of thermal insulation concrete and concrete, applied in the field of building materials, to achieve good resistance to tensile deformation, saving a lot of resources, and uniform distribution

Inactive Publication Date: 2017-01-04
MAANSHAN MCC17 ENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the technical problems existing in the existing lightweight aggregate concrete, the present invention provides an all-light self-insulating concrete and a preparation method thereof

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Take the raw material according to the following parts by weight:

[0024] Portland cement 35, pulverized coal 5, granulated blast furnace slag powder 5, ceramsite 20, ceramic sand 13, ecological fiber 0.2, foaming agent 1.5, thickener 0.3, water 20.

[0025] (1) Put the required Portland cement, fly ash, granulated blast furnace slag powder and thickener together for stirring, the mixing time is 3 to 6 minutes, and then according to the required water, The foaming agent is added in sequence, and the stirring is continued for 10 to 15 minutes to obtain a slurry mixture;

[0026] (2) Add ceramsite and ceramsite in a dry and saturated state to the slurry mixture obtained in step (1), and stir for 20 to 35 minutes to obtain all-light self-insulating concrete with a bulk density of 1050kg / m2 and 28-day compression resistance The strength is 15.8MPa, and the thermal conductivity is 0.19w / (m·k).

Embodiment 2

[0028] Take the raw material according to the following parts by weight:

[0029] Portland cement 30, pulverized coal 8, granulated blast furnace slag powder 7, ceramsite 22, ceramic sand 15, ecological fiber 0.1, foaming agent 1.8, thickener 0.1, water 16.

[0030] (1) Put the required Portland cement, fly ash, granulated blast furnace slag powder and thickener together for stirring, the mixing time is 3 to 6 minutes, and then according to the required water, The foaming agent is added in sequence, and the stirring is continued for 10 to 15 minutes to obtain a slurry mixture;

[0031] (2) Add ceramsite and ceramsite in a dry and saturated state to the slurry mixture obtained in step (1), and stir for 20 to 35 minutes to obtain all-light self-insulating concrete with a bulk density of 950kg / m2 and 28-day compression resistance The strength is 12.8MPa, and the thermal conductivity is 0.14w / (m·k).

Embodiment 3

[0033] Take the raw material according to the following parts by weight:

[0034] Portland cement 20, pulverized coal 10, granulated blast furnace slag powder 8, ceramsite 28, ceramic sand 17, ecological fiber 0.4, foaming agent 1.1, thickener 0.5, water 15.

[0035] (1) Put the required Portland cement, fly ash, granulated blast furnace slag powder and thickener together for stirring, the mixing time is 3 to 6 minutes, and then according to the required water, The foaming agent is added in sequence, and the stirring is continued for 10 to 15 minutes to obtain a slurry mixture;

[0036] (2) Add ceramsite and ceramsite in a dry and saturated state to the slurry mixture obtained in step (1), and stir for 20-35 minutes to obtain all-light self-insulating concrete with a bulk density of 1150kg / m2 and 28-day compression resistance The strength is 17.2MPa, and the thermal conductivity is 0.21w / (m·k).

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Abstract

The invention discloses full-light self-thermal-insulation concrete and a preparation method. The self-thermal-insulation concrete is prepared from, by mass, 15-45 parts of Portland cement, 5-15 parts of fly ash, 5-15 parts of palletized blast furnace slag fine powder, 10-35 parts of ceramsite, 12-30 parts of ceramic sand, 0.1-0.6 part of ecological fiber, 0.1-2 parts of foaming agent, 0.2-1.0 part of thickener and 10-30 parts of water. The preparation method of the concrete includes the steps that Portland cement, fly ash, palletized blast furnace slag fine powder and thickener required by preparation are placed together to be stirred and mixed for 3-6 min, then water and foaming agent required by preparation are sequentially added into the mixture and continue to be stirred for 10-15 min, and a pulp mixture is obtained. The ecological fiber has good tensile deformation resistance and is low in specific gravity, so the foamed concrete is ductile, China has rich ecological plant resources so that a lot of resources can be saved, and the survival environment of human is benefited.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an all-light self-insulating concrete and a preparation method thereof. Background technique [0002] All-light concrete All-light concrete is a lightweight aggregate concrete prepared with light coarse aggregate, light fine aggregate, cementitious material and water. The dry apparent density of all-light concrete for structural insulation is 800 kg / m3 to 1 400 kg / m3, and the strength grades are generally LC7.5, LC10, and LC15. In the dry state, the thermal conductivity is 0.23W / (m·K)~0.49 W / (m·K), which is 1~7 times lower than that of ordinary concrete. Using 28 cm thick alkaline earth ceramsite all-light concrete (density 1200 kg / m3) for the exterior wall panel, its thermal resistance value is equivalent to that of a 49 cm brick wall. All-light concrete is a material that is both load-bearing and thermally insulating. Europe, the United States and othe...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B38/08C04B111/52
CPCC04B28/04C04B38/08C04B2111/52C04B2201/20C04B2201/32C04B2201/50
Inventor 钱元弟柯能好雷团结王孝平王慧李亚辉黄维军
Owner MAANSHAN MCC17 ENG TECH CO LTD
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