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Geopolymer-based foamed concrete for filling lightweight steel keel composite walls based on straw and solid waste

A technology for solid waste and foamed concrete, applied in the field of building materials, can solve the problems of uneven interfacial adhesion of straw, retardation of straw extract, fluidity loss, etc., to avoid excessive coagulation, delay polymerization reaction, compensate for shrinking effect

Active Publication Date: 2020-05-19
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the technical problems of fluidity loss, mold collapse, voiding, slurry leakage, retarded setting of straw extracts, uneven straw and weak interface cohesion existing in foamed concrete filled with light steel keel composite walls, the present invention provides a Geopolymer-based foam concrete for light steel keel composite wall filling based on straw and solid waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A geopolymer-based foam concrete for light steel keel composite wall filling based on straw and solid waste, which is composed of the following components: solid waste powder 104.0kg, alkali activator 19.9kg, cementitious material reinforcing agent 5.6kg, page Rock ceramsite 71.0kg, surface modified straw 5.5kg, iron powder expansion agent 6.4kg, admixture 4.9kg, tap water 57.2kg, foam 215L, wherein the admixture is composed of the following components by weight percentage: the alkali content is less than 0.5% β-naphthalene sulfonate formaldehyde condensate 20.0%, lead nitrate 15.0%, slurry anti-segregation agent 64.0%, polyether polysaccharide 1.0%.

[0040] The solid waste powder consists of the following components (percentage by weight): 10% granulated blast furnace slag, 80% calcined coal gangue, and 10% siliceous slag.

[0041] The alkali activator is composed of the following components (weight percentage): sodium water glass 58%, sodium hydroxide 42%.

[0042] ...

Embodiment 2

[0051] Example 2 A geopolymer-based foam concrete for light steel keel composite wall filling based on straw and solid waste, which consists of the following components: 110.0 kg of solid waste powder, 28.0 kg of alkali activator, and 10.0 kg of cementitious material reinforcing agent kg, shale ceramsite 52.0kg, surface modified straw 9.8kg, iron powder expansion agent 8.9kg, admixture 5.9kg, tap water 52.1kg, foam 120L, wherein the admixture consists of the following components (weight percentage): alkali β-naphthalene sulfonate formaldehyde condensate with content less than 0.5% 18.0%, lead nitrate 15.0%, slurry anti-segregation agent 66.0%, polyether polysaccharide 1.0%.

[0052] The solid waste powder is composed of the following components (percentage by weight): 10% fly ash, 80% calcined coal gangue, and 10% siliceous slag.

[0053] The alkali activator is composed of the following components (weight percentage): sodium water glass 48%, sodium hydroxide 52%.

[0054] Th...

Embodiment 3

[0059] Example 3 A geopolymer-based foam concrete for light steel keel composite wall filling based on straw and solid waste, which consists of the following components: 108.5 kg of solid waste powder, 25.4 kg of alkali activator, and 9.6 kg of cementitious material reinforcing agent kg, shale ceramsite 105.2kg, surface modified straw 5.5kg, iron powder expansion agent 6.4kg, admixture 5.7kg, tap water 57.2kg, foam 245L, wherein the admixture consists of the following components (weight percent): alkali 18.0% β-naphthalenesulfonate formaldehyde condensate with content less than 0.5%, lead nitrate 12.0%, slurry anti-segregation agent 69.0%, maltodextrin 1.0%.

[0060] The solid waste powder is composed of the following components (percentage by weight): 20% of granulated blast furnace slag, and 80% of calcined coal gangue.

[0061] The alkali activator consists of the following components (percentage by weight): 50% sodium water glass and 50% sodium hydroxide.

[0062]The rein...

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Abstract

The invention discloses geopolymer-based foam concrete based on straw and solid waste for light steel keel composite wall filling. The geopolymer-based foam concrete comprises, by weight, 96.2-112.1 parts of solid waste powder, 11.4-28.4 parts of alkali activator, 1.1-10.2 parts of cementitious material enhancer, 0-142.0 parts of ceramsite, 1.0-10.0 parts of surface modified straw, 3.8-9.0 parts of iron powder expansion agent, 3.2-6.0 parts of admixture and 35.8-78.6 parts of water, and 0.25-1.84 L of foam is added into the raw materials per kg or more. The geopolymer-based foam concrete is prepared by using the crop straw and the solid waste as the raw materials, the concrete is high in fluidity retention rate and great in stability, and phenomena of stratification, segregation, bleedingand collapse cannot occur. The straw is uniformly distributed, and the geopolymer-based foam concrete is good in filling performance, low in thermal conductivity, great in thermal insulation performance and especially suitable for light steel keel composite wall filling.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to a geopolymer-based foam concrete for filling light steel keel composite walls based on straw and solid waste. Background technique [0002] The cast-in-place foam concrete light steel keel composite wall is supported by the light steel keel, and the non-removable inorganic panel fixed on the keel is used as the covering material to form a wall cavity, and then the foam concrete slurry is poured into the cavity. After hardening, together with the keel and the panel, it forms a complete sandwich composite wall. The composite wall integrates various excellent properties such as light weight, self-insulation, earthquake resistance, sound insulation, fire prevention, and earthquake resistance. It is incomparable to other new wall materials. Promote the development of my country's wall materials in the direction of high performance. [0003] The foam concrete filled with ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B20/02C04B38/10E04B2/58
CPCC04B20/023C04B28/006C04B2201/20C04B2201/32C04B2201/50E04B2/58C04B18/101C04B18/027C04B22/04C04B24/226C04B22/085C04B18/0409C04B18/24C04B14/104C04B24/38C04B38/106Y02P40/10
Inventor 李克亮李虎陈爱玖卢玫珺王慧贤王江锋马军涛仝玉萍杜晓蒙马毅
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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