A kind of low density foam cement and preparation method thereof

A technology of foamed cement and low density, which is applied in the field of light-weight and energy-saving building materials and its preparation. It can solve the problems of poor thermal insulation performance, high density, and affecting the energy-saving effect of buildings, and achieves short setting time, improved stability, and reduced cracks. Effect

Active Publication Date: 2016-05-18
广东建科建设咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, foamed cement in construction engineering applications generally has defects such as high density and poor thermal insulation performance, which seriously affect the energy-saving effect of buildings and cannot meet the requirement of 65% energy-saving for buildings.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 120 parts of cement, 1.0 part of coagulation accelerator, 1.0 part of foam stabilizer, 1.2 parts of water reducer, 11 parts of foaming agent, 0.5 part of fiber, and 50 parts of water.

[0032] The dry bulk density of the resulting low-density foamed cement is 141kg / m 3 , 28-day strength 0.2Mpa, thermal conductivity 0.049w / (m·K).

Embodiment 2

[0034] 60 parts of cement, 0.3 parts of coagulation accelerator, 0.4 parts of foam stabilizer, 0.5 parts of water reducing agent, 9 parts of foaming agent, 0.2 parts of fiber, and 25 parts of water.

[0035] The dry bulk density of the resulting low-density foamed cement is 72kg / m 3 , 28-day strength 0.1Mpa, thermal conductivity 0.034w / (m·K)

Embodiment 3

[0037] 90 parts of cement, 0.7 parts of coagulation accelerator, 0.8 parts of foam stabilizer, 0.8 parts of water reducer, 12 parts of foaming agent, 0.3 parts of fiber, and 35 parts of water.

[0038] The dry bulk density of the resulting low-density foamed cement is 110kg / m 3 , 28-day strength 0.1Mpa, thermal conductivity 0.041w / (m·K).

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Abstract

The invention discloses a low-density foaming cement, which comprises the following components in parts by weight: 60 to 120 parts of cement, 0.3 to 1.0 part of coagulant, 0.4 to 1.0 part of foam stabilizer, 0.5 to 1.2 parts of water reducer, 9 to 14 parts of foaming agent, 0.2 to 0.5 part of fiber, and 25 to 50 parts of water. The invention also discloses a preparation method of the low-density foaming cement. The low-density foaming cement is prepared through the following steps: evenly stirring dry powder, adding water to prepare cement slurry, adding a foaming agent under rapid stirring, casting to mould, and carrying out natural maintenance; and has the advantages of low dry density and low thermal conduction coefficient.

Description

technical field [0001] The invention relates to a lightweight energy-saving building material and a preparation method thereof, in particular to a low-density foamed cement and a preparation method thereof. Background technique [0002] Driven by energy-saving and thermal insulation policies for wall materials, energy-saving building materials have developed rapidly. At present, a large number of organic insulation materials are used in the market, such as polystyrene foam, extruded polystyrene board, polyurethane and so on. These organic insulation materials have great fire safety hazards, short service life, and need to be replaced several times during the life of the building. The cumulative cost is huge, and at the same time it causes serious environmental pollution, which runs counter to the development of circular economy and construction of a conservation-oriented society advocated by the state. [0003] Foamed cement is a kind of lightweight inorganic thermal insula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/20C04B24/12C04B7/32
Inventor 李建新王新祥王元光陈培鑫陈耿郑靓郑焕奇
Owner 广东建科建设咨询有限公司
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