Straw fiber reinforcement air-entrained concrete and preparation method thereof

A technology of aerated concrete and straw fiber, which is applied to ceramic products, other household appliances, applications, etc., can solve the problems of waste of straw resources, environment, pollution, etc., and achieve the effect of simple process, pollution reduction, and good thermal insulation performance

Active Publication Date: 2013-07-10
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned shortcomings and deficiencies of the prior art, the object of the present invention is to provide a kind of straw fiber reinforced aerated concrete and its preparation method. waste of resources and environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Weigh the base material: cement: lime: ceramic waste: fly ash: gypsum = 18: 15: 34: 30: 3 Weigh cement, lime, ceramic waste, fly ash and gypsum for mixing The material is uniform; the water consumption is weighed according to the water-material ratio of 0.58, the water temperature is controlled at 50°C, and the water is divided into two parts: one part is mixed with water and admixture evenly, and the admixture is mixed according to 0.5% of the dry mass of the base material; One part of water is mixed with straw fiber to disperse the straw fiber in water, and the straw fiber is mixed by 3% of the dry mass of the base material;

[0031] The admixture is formed by compounding polycarboxylate water reducer and triethanolamine;

[0032] Described ceramic waste, the mass percent of its chemical composition is: SiO 2 70.3%;Al 2 o 3 16.5%; Fe 2 o 3 1.1%; MgO1.1%; CaO0.6%; Na 2 O3.0%; K 2 02.1%; the loss on ignition of the ceramic waste is 5.3%; the fineness of the c...

Embodiment 2

[0041] (1) Weigh the base material: cement: lime: ceramic waste: fly ash: gypsum = 15: 20: 35: 28: 2 Weigh cement, lime, ceramic waste, fly ash and gypsum for mixing The material is uniform; the water consumption is weighed according to the water-material ratio of 0.55, the water temperature is controlled at 50°C, and the water is divided into two parts: one part is mixed with water and admixture evenly, and the admixture is mixed according to 0.6% of the dry mass of the base material; One part of water is mixed with the straw fiber to disperse the straw fiber in water, and the straw fiber is mixed by 5% of the dry mass of the base material;

[0042] The admixture may be compounded by naphthalene-based water reducer and triethanolamine;

[0043] Described ceramic waste, the mass percent of its chemical composition is: SiO 2 70.3%;Al 2 o 3 16.5%; Fe 2 o 3 1.1%; MgO1.1%; CaO0.6%; Na 2 O3.0%; K 2 02.1%; the loss on ignition of the ceramic waste is 5.3%; the fineness of the...

Embodiment 3

[0052] (1) Weigh the base material: cement: lime: ceramic waste: fly ash: gypsum = 15: 17: 39: 27: 2 Weigh cement, lime, ceramic waste, fly ash and gypsum for mixing The material is uniform; the water consumption is weighed according to the water-material ratio of 0.53, the water temperature is controlled at 55°C, and the water is divided into two parts: one part is mixed with the admixture evenly, and the admixture is mixed according to 0.7% of the dry mass of the base material; One part of water is mixed with the straw fiber to disperse the straw fiber in water, and the straw fiber is mixed by 5% of the dry mass of the base material;

[0053] The admixture is formed by compounding polycarboxylate water reducer and alkali salt;

[0054] Described ceramic waste, the mass percent of its chemical composition is: SiO 2 70.3%;Al 2 o 3 16.5%; Fe 2 o 3 1.1%; MgO1.1%; CaO0.6%; Na 2 O3.0%; K 2 02.1%; the loss on ignition of the ceramic waste is 5.3%; the fineness of the ceramic...

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Abstract

The invention discloses straw fiber reinforcement air-entrained concrete which comprises a base material, an aluminum powder paste, a straw fiber, an additive and water, wherein the doping amount of the aluminum powder paste accounts for 0.06%-0.09% of the dry weight of the base material; the doping amount of the additive accounts for 0.5%-0.8% of the dry weight of the base material; the doping amount of the straw fiber accounts for 2%-10% of the dry weight of the base material; and the mass ratio of the water and the base material is 0.52-0.60, The invention also discloses a preparation method of the straw fiber reinforcement air-entrained concrete. The straw fiber reinforcement air-entrained concrete disclosed by the invention reduces the shrinkage cracking and production cost of air-entrained concrete and solves the problems of straw resource waste, ceramic waste treatment and environmental pollution to a certain degree.

Description

technical field [0001] The invention relates to a novel lightweight wall building material, in particular to a straw fiber reinforced aerated concrete and a preparation method thereof. Background technique [0002] Air-entrained concrete block is a new type of building material with low energy consumption and environmental protection. It has the advantages of light weight, good thermal insulation performance, high strength, good seismic performance, good processing performance, high temperature resistance, and good sound insulation performance. Air-entrained concrete mainly includes fly ash-lime series and sand-lime series. The calcareous materials of existing aerated concrete products are cement, lime and blast furnace slag, etc., and the siliceous materials include fly ash, sand, tuff, tailings, etc. Except for fly ash, other siliceous materials require SiO 2 The content is greater than 75%, and requires quartz SiO 2 The higher the content of the better, the reinforcing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/10C04B38/02C04B16/02
Inventor 李方贤韦江雄余其俊胡捷徐志辉陈阳高品海
Owner SOUTH CHINA UNIV OF TECH
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