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Aerated concrete block and preparation method thereof

A technology of aerated concrete and blocks, which is applied in the field of building materials, can solve the problems of insufficient strength of filling materials, failure to meet energy-saving requirements, and large thermal conductivity, and achieve good thermal insulation effects, high strength, and simple preparation methods.

Inactive Publication Date: 2017-09-15
HEFEI GUANGMIN BUILDING MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the relatively mature industrial aerated concrete products have an absolute dry density of 400-600kg / m 3 , the thermal conductivity is 0.09-0.15W / (m﹐K), and the thermal conductivity is relatively large, which can no longer meet the energy-saving requirements
[0004] With the advancement of science and technology, low thermal conductivity aerated concrete masonry has appeared, and its absolute dry density is 200-400kg / m 3 , thermal conductivity ≤0.08W / (m.K), which meets the energy-saving requirements, but the strength is very low, and the strength of the filling material used to make concrete blocks and serve as some building structures is still insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] An aerated concrete block, comprising the following components in a weight ratio: 50 parts of fly ash, 35 parts of ground quartz powder, 25 parts of desulfurized gypsum, 20 parts of talc powder, 15 parts of sepiolite powder, active siliceous material 10 parts, 20 parts lime, 7.5 parts mica powder, 5 parts light ceramsite, 10 parts quartz sand, 5.5 parts gypsum, 10 parts asbestos powder, 7 parts glass fiber, 6 parts aluminum powder, 4 parts air-entraining agent, stable 3 parts of foaming agent, 5.5 parts of foam stabilizer and 70 parts of deionized water.

[0030] Wherein, the active siliceous material is one or a mixture of two or more of activated coal gangue, activated metakaolin, and activated desulfurized high calcium ash.

[0031] Wherein, the glass fiber is an ultrafine glass fiber with a diameter of 5.5 micrometers and a length of 4 mm obtained after the glass fiber precursor passes through the chopped strands and the fiber milling steps.

[0032] Wherein, the causing ...

Embodiment 2

[0043] An aerated concrete block, comprising the following components in weight ratio: 40 parts of fly ash, 30 parts of ground quartz powder, 20 parts of desulfurized gypsum, 10 parts of talc powder, 10 parts of sepiolite powder, active siliceous material 5 parts, 15 parts lime, 5 parts mica powder, 2 parts light ceramsite, 5 parts quartz sand, 3 parts gypsum, 5 parts asbestos powder, 4 parts glass fiber, 3 parts aluminum powder, 2 parts air-entraining agent, stable 1 part foaming agent, 3 parts foam stabilizer and 60 parts deionized water.

[0044] Wherein, the active siliceous material is one or a mixture of two or more of activated coal gangue, activated metakaolin, and activated desulfurized high calcium ash.

[0045] Wherein, the glass fiber is an ultrafine glass fiber with a diameter of 3 microns and a length of 3 mm obtained after the glass fiber precursor passes through the chopped strands and the steps of milling the fibers.

[0046] Wherein, the causing agent is a modified...

Embodiment 3

[0057] An aerated concrete block, comprising the following components in a weight ratio: 60 parts of fly ash, 40 parts of ground quartz powder, 30 parts of desulfurized gypsum, 30 parts of talc powder, 20 parts of sepiolite powder, active siliceous material 15 parts, 25 parts lime, 10 parts mica powder, 8 parts light ceramsite, 15 parts quartz sand, 8 parts gypsum, 15 parts asbestos powder, 10 parts glass fiber, 10 parts aluminum powder, 6 parts air-entraining agent, stable 5 parts of foaming agent, 8 parts of foam stabilizer and 80 parts of deionized water.

[0058] Wherein, the active siliceous material is one or a mixture of two or more of activated coal gangue, activated metakaolin, and activated desulfurized high calcium ash.

[0059] Wherein, the glass fiber is an ultra-fine glass fiber with a diameter of 8 microns and a length of 5 mm obtained after the glass fiber precursor passes through the chopped strand and the fiber grinding step.

[0060] Wherein, the causing agent is ...

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Abstract

The invention discloses an aerated concrete block. The aerated concrete block is prepared from, by weight, 40-60 parts of coal ash, 30-40 parts of levigated quartz powder, 20-30 parts of desulfurized gypsum, 10-30 parts of talc powder, 10-20 parts of sepiolite powder, 5-15 parts of activated silicon material, 15-25 parts of lime, 5-10 parts of mica powder, 2-8 parts of lightweight ceramsite, 5-15 parts of quartz sand, 3-8 parts of gypsum, 5-15 parts of asbestos powder, 4-10 parts of glass fibers, 3-10 parts of aluminum powder, 2-6 parts of an air entraining agent, 1-5 parts of a foam stabilizer, 3-8 parts of a foam homogenizing agent and 60-80 parts of deionized water. The aerated concrete block meets requirements on heat insulation, energy saving and high strength, and a preparation method of the aerated concrete block is simple, convenient and suitable for industrial production.

Description

Technical field [0001] The invention relates to the technical field of building materials, in particular to an aerated concrete block and a preparation method thereof. Background technique [0002] With the increase in environmental protection and the implementation of sustainable development strategies in my country, people’s awareness of environmental resource protection has gradually strengthened, and building energy conservation and environmental protection have received more and more attention. The development of new wall materials with non-clay as the main raw material and the active promotion of energy-saving buildings are effective ways to effectively protect the environment of cultivated land resources, improve building functions and living comfort, and promote the construction of a resource-saving society. [0003] Aerated concrete is a new type of wall building material, which has the characteristics of light weight, heat preservation, heat insulation, and non-combustibi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B38/02C04B28/14C04B40/02
CPCC04B28/144C04B40/024C04B2111/20C04B2111/40C04B2201/32C04B2201/50C04B18/08C04B18/0445C04B14/042C04B14/106C04B14/20C04B22/064C04B18/027C04B22/143C04B14/40C04B14/42C04B22/04C04B24/34C04B18/146C04B22/10C04B38/08C04B38/02
Inventor 黄洋
Owner HEFEI GUANGMIN BUILDING MATERIAL CO LTD
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