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Foam concrete prepared from undisturbed desulfurization gypsum and preparation method thereof

A technology of foam concrete and desulfurized gypsum, which is applied in the field of building materials, can solve the problems of resource waste and inability to be used to prepare foam concrete, and achieve the effects of preventing mold collapse, saving natural resources, and expanding the scope of application

Active Publication Date: 2016-08-17
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of undisturbed desulfurized gypsum foam concrete and its preparation method, in order to solve the problem in the prior art that undisturbed desulfurized gypsum cannot be used to prepare foamed concrete.

Method used

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  • Foam concrete prepared from undisturbed desulfurization gypsum and preparation method thereof
  • Foam concrete prepared from undisturbed desulfurization gypsum and preparation method thereof

Examples

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Embodiment 1

[0033] An original desulfurization gypsum foam concrete, wherein the original desulfurization gypsum includes wet desulfurization gypsum and dry desulfurization gypsum, and the raw material of the foam concrete is composed of the following components in parts by weight: wet desulfurization gypsum with an attached water content of 7% 30 parts, the density is 2.35g / cm 3 27 parts of dry desulfurization gypsum, specific surface area 350m 2 28 parts of slag powder per kg, 6 parts of cement, 9 parts of ash calcium powder with a fineness of 300 mesh, 0.63 parts of water reducer, 1.9 parts of alkaline activator with a modulus of 1.4, 2.3 parts of foaming agent, and foam stabilizer 2.8 parts, 0.03 parts of catalyst, 0.17 parts of polypropylene fiber with a length of 6mm, and 42 parts of water.

[0034] Wherein, cement adopts commercially available 52.5 cement; Gray calcium powder adopts commercially available gray calcium powder; Foaming agent is hydrogen peroxide H 2 o 2 , its acti...

Embodiment 2

[0036] An original desulfurization gypsum foam concrete, wherein the original desulfurization gypsum includes wet desulfurization gypsum and dry desulfurization gypsum, and the raw material of the foam concrete is composed of the following components in parts by weight: wet desulfurization gypsum with an attached water content of 15% 50 parts, the density is 2.65g / cm 3 13 parts of dry desulfurization gypsum, specific surface area 450m 2 19 parts of slag powder per kg, 11 parts of cement, 7 parts of ash calcium powder with a fineness of 450 mesh, 0.70 parts of water reducer, 1.0 part of alkaline activator with a modulus of 2.0, 2.7 parts of foaming agent, and foam stabilizer 3.4 parts, 0.05 parts of catalyst, 0.13 parts of polypropylene fiber with a length of 12 mm, and 35 parts of water.

[0037] Wherein, cement adopts commercially available 52.5 cement; Gray calcium powder adopts commercially available gray calcium powder; Foaming agent is hydrogen peroxide H 2 o 2 , its a...

Embodiment 3

[0039] An original desulfurized gypsum foam concrete, wherein the original desulfurized gypsum includes wet-process desulfurized gypsum and dry-process desulfurized gypsum, and the raw material of the foam concrete is composed of the following components in parts by weight: wet-process desulfurized gypsum with an attached water content of 10% 32 parts, the density is 2.50g / cm 3 32 parts of dry desulfurization gypsum, specific surface area 400m 2 22 parts per kg of slag powder, 8 parts of cement, 6 parts of ash calcium powder with a fineness of 400 mesh, 0.66 parts of water reducer, 1.3 parts of alkaline activator with a modulus of 1.6, 2.5 parts of foaming agent, and foam stabilizer 3.2 parts, 0.04 parts of catalyst, 0.15 parts of polypropylene fiber with a length of 9 mm, and 38 parts of water.

[0040] Wherein, cement adopts commercially available 52.5 cement; Gray calcium powder adopts commercially available gray calcium powder; Foaming agent is hydrogen peroxide H 2 o 2...

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Abstract

The invention provides foam concrete prepared from undisturbed desulfurization gypsum and a preparation method thereof. The foam concrete is prepared from the following raw materials in parts by weight: 30-50 parts of wet desulfurization gypsum, 13-32 parts of dry desulfurization gypsum, 19-28 parts of superfine slag powder, 6-11 parts of cement, 6-9 parts of ash calcium powder, 0.63-0.70 part of a water reducer, 1.0-1.9 parts of an alkaline activator, 2.3-2.7 parts of a foaming agent, 2.8-3.4 parts of a foam stabilizer, 0.03-0.05 part of a catalyst, 0.13-0.17 part of polypropylene fiber, and 35-42 parts of water. The foam concrete prepared by the method provided by the invention is environment-friendly, energy saving, high in strength, low in thermal conductivity, low in linear shrinkage, etc. The undisturbed desulfurization gypsum is successfully used for preparing the foam concrete, natural resources are effectively saved, a new way for the comprehensive utilization of solid waste is opened up, and the scope of application of industrial waste gypsum is greatly expanded.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an original desulfurized gypsum foam concrete and a preparation method thereof. Background technique [0002] my country is the largest coal producing and consuming country in the world, SO emissions from coal burning 2 It has become the main air pollutant controlled by our country. SO 2 A large amount of emissions, causing my country's air pollution and acid rain problems are becoming more and more serious, acid rain and SO 2 The harm of pollution is multifaceted. It seriously threatens river and lake water systems and drinking water sources, causes soil acidification, destroys the ecological environment, corrodes and damages buildings, pollutes the air, and endangers human health. Strengthen environmental protection, actively promote energy conservation and emission reduction strategies, and widely implement new coal-fired desulfurization technologies to effective...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B38/02B28B1/50
CPCB28B1/50C04B28/14C04B38/02C04B18/141C04B7/02C04B22/062C04B2103/302C04B2103/48C04B16/0633
Inventor 郭丽萍雷东移
Owner SOUTHEAST UNIV
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