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Method for preparing fiber-enhanced foam concrete

A foamed concrete, fiber-reinforced technology, applied in ceramic products, applications, household appliances, etc., can solve the problems of large shrinkage, easy cracking, and low compressive strength of thermal insulation materials, and achieve improved crack resistance, increased toughness and wear resistance. , the effect of low dry density

Active Publication Date: 2014-02-05
SHENYANG JIANZHU UNIVERSITY
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] The purpose of this invention is to solve the problems of large shrinkage, low compressive strength and easy cracking of existing foam concrete external wall insulation materials, and to provide a safe A method for the preparation of fiber-reinforced foamed concrete that is long-lasting, feasible, and inexpensive

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A fiber reinforced foam concrete, its components are:

[0032] Raw material quality g

[0033] (1) Cementitious material

[0034] Fast hardening sulphoaluminate cement 980~990

[0035] (2) Water 550~650

[0036] (3) External admixture

[0037] Fiber 10~20

[0038] (4) Foam: The volume (liter) accounts for 750% of the volume of the added water.

[0039] The preparation process is:

[0040] 1. Selection of raw materials: fast hardening sulphoaluminate cement is 42.5R fast hardening sulphoaluminate cement produced by Tangshan Jidong Cement Co., Ltd.; the foaming agent is HT composite foaming produced by Henan Huatai Building Materials Development Co., Ltd. The fiber is selected from the 3mm polypropylene fiber produced by Liaoyang Juxin Fiber Co., Ltd.

[0041] 2. Pour the fast hardening sulphoaluminate cement and fiber into the mixing pot, stir slightly (low speed to make the material uniform), add water, continue to stir at low speed (50-100r / min) for 2 minutes, then high-sp...

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Abstract

The invention provides a method for preparing fiber-enhanced foam concrete, wherein mekralon is added for preparing the foam concrete, thereby enhancing rupture strength of the foam concrete and reducing contraction. The fiber-enhanced foam concrete is prepared by the following components by weight: 980-990g of sulphoaluminate early strength cement, 10-20g of fiber, and 550-650g of water, wherein the volume (ml) of the foam is 600-900% that of the added water. The method comprises: dispersing the mekralon in the sulphoaluminate early strength cement based on the formula amounts, stirring in a cement paste mixer, stewing for 20min after uniformly stirring cement slurry, and then adding foam, to form the uniformly-mixed slurry; and forming, maintaining in a standard maintaining case, and then detecting rupture strength and contraction value thereof. The rupture strength is greatly raised, and most reaches 1.45 times that without adulteration, and toughness is greatly improved.

Description

technical field [0001] The invention relates to a light-weight external thermal insulation material for building exterior walls, in particular to a preparation method for a light-weight fiber-reinforced foamed concrete with good thermal insulation and fireproof performance that can meet certain strength requirements. Background technique [0002] With the vigorous development of the construction industry, the safety of building materials has also received increasing attention. External thermal insulation materials for building exterior walls must not only have the effect of building energy conservation, but also have excellent fire and flame retardant properties. In view of the frequent occurrence of building fire accidents, the key issue of how to safely apply external thermal insulation materials for exterior walls was raised. Foamed concrete, as a new type of inorganic fireproof and thermal insulation material, not only has the performance of ordinary organic thermal ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B16/06C04B38/02
Inventor 王晴吴陶俊刘锁李明泽蒋威
Owner SHENYANG JIANZHU UNIVERSITY
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