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A preparation method suitable for cast-in-place foam concrete with alkali phosphorus slag

A technology of foam concrete and alkali phosphorus slag, which is applied in the field of waste resource utilization, can solve the problems of easy collapse of foam concrete, mismatch of foam stability time, and too fast setting and hardening time, so as to reduce processing energy consumption and improve dispersion stability Sexuality and rheological properties, low price effect

Active Publication Date: 2018-06-05
HUBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its setting and hardening time is too fast, which does not match the foam stabilization time, which makes the foam concrete easy to collapse after pouring

Method used

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  • A preparation method suitable for cast-in-place foam concrete with alkali phosphorus slag

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] 1) Take 60% by weight of the wet-discharged quenched phosphorus slag, take 33.45% and place it in a wet mill, add water and wet-grind until the specific surface area is 500-1200m 2 / kg, to obtain wet abrasive; take 26.55% and place it in a jaw crusher for crushing until the average particle size is 2-20mm, to obtain crushed material; wet abrasive: crushed material is 1.26:1.

[0033] 2) Place the 33.45% wet abrasive obtained in step 1) into a special mixer for foamed concrete, add 26.55% of the crushed material in step 1), 28% of water, 0.68% of polypropylene fiber, and 0.118% of vinyl acetate-ethylene copolymer , sodium carboxymethylcellulose 0.15% was stirred for 4 minutes, then 6.0% of ordinary Portland cement was added by weight percentage, and 5% of water glass was stirred for 1 minute to prepare mortar;

[0034] 3) Take 0.052% of rosin gum foaming agent by weight percentage to prepare foam;

[0035] 4) Add the foam prepared in step 3) to the mortar in step 2) and...

Embodiment 2

[0036] Embodiment 2, with embodiment 1, the difference is,

[0037] 1) Take 44.26% of the wet-discharged quenched phosphorus slag with a weight percentage of 60% and put it in a wet mill, add water and wet grind until the specific surface area is 500-1200m 2 / kg, to obtain wet abrasive; take 30.73% and place it in an impact crusher to crush until the average particle size is 2-20mm, to obtain crushed material; wet abrasive: crushed material is 1.44:1.

[0038] 2) Place the 44.26% wet abrasive obtained in step 1) in a special mixer for foam concrete, add 30.73% of the crushed material in step 1), 20% of water, 0.15% of alkali-resistant glass fiber, and 0.039% of vinyl acetate-ethylene copolymer. %, sodium carboxymethylcellulose 0.076% and stirred for 4 minutes, then added 2.7% of ordinary Portland cement by weight percentage, 5% of water glass and stirred for 1 minute to prepare mortar;

[0039] 3) Take 0.052% of resin soap foaming agent by weight percentage to prepare foam.

Embodiment 3

[0040] Embodiment 3, with embodiment 1, the difference is,

[0041] 1) Take 36.73% of the 60% by weight of the wet-discharged quenched phosphorus slag and place it in a wet mill, add water and wet grind until the specific surface area is 500-1200m 2 / kg, to get wet abrasive; take 28.26% and crush it in an impact crusher until the average particle size is 2-20mm, to get crushed material; wet abrasive: crushed material is 1.30:1.

[0042] 2) Place the 36.73% wet abrasive obtained in step 1) into a special mixer for foam concrete, add 28.26% of the crushed material in step 1), 24% of water, and 0.68% of high-strength and high-elasticity polyvinyl alcohol fiber , vinyl acetate-ethylene copolymer 0.118%, sodium carboxymethyl cellulose 0.15% stirred for 4 minutes, then added ordinary portland cement 6.0% by weight percentage, water glass 4.0% stirred for 1 minute, prepared mortar;

[0043] 3) Take 0.052% of hydrolyzed blood gel foaming agent by weight percentage to prepare foam.

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Abstract

The invention discloses a preparation method suitable for alkali-phosphorus slag cast-in-place foam concrete. The preparation method includes: taking 60-75% of phosphorus slag, placing the phosphorus slag into a wet mill according to a ratio of 1.26-1.44:1, adding water for wet milling to obtain a wet milled material, and placing the wet milled material in a crusher for crushing to obtain a crushed material; placing the wet milled material into a stirrer, adding the crushed matrial, 20-28% of water, 0.15-0.68% of fiber, 0.039-0.118% of gelatine powder and 0.076-0.15% of suspending agent for stirring; adding 2.7-6.0% of cement, 4-5% of excitant, and stirring to obtain mortar; adding 0.035-0.052% of foamer to obtain foam, and stirring to obtain the alkali-phosphorus slag cast-in-place foam concrete. The alkali-phosphorus slag cast-in-place foam concrete is low in density, light in mass, high in strength and stability, heat-proof, moisture-proof and high in antiseismicity, density is 500-900 kg / m3, 7-day compressive strength is 1-5 MPa, and heat conducting coefficient is 0.118-0.214 W / (m.K).

Description

technical field [0001] The invention belongs to the application field of waste recycling, and in particular relates to a preparation method suitable for cast-in-place foam concrete from alkali phosphorus slag. Background technique [0002] According to rough statistics, in recent years, the average building area of ​​new heating residential buildings in heating areas in my country is 1×108m2 / year. If all new buildings can achieve energy-saving targets of 50%, then 1500kt of standard coal for heating can be saved every year, and corresponding Reduce SO2 emissions by 127kt, soot by 6550kt, ash by 2170kt, and save 8250kt of coal in 10 years. Therefore, it is of great significance to develop high-efficiency thermal insulation materials suitable for my country's national conditions, vigorously promote energy-saving buildings, and implement energy-saving standards to save heating energy consumption, protect the environment, and maintain the sustained and rapid development of my cou...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/10C04B28/04
CPCC04B28/04C04B38/106C04B2201/20C04B2201/32C04B2201/50C04B7/1535C04B12/005C04B16/0633C04B24/26C04B24/383C04B24/34C04B14/44C04B16/0641C04B2103/0068
Inventor 贺行洋代飞苏英柯凯王迎斌曾三海李颜娟兰蒙储劲松王传辉江波
Owner HUBEI UNIV OF TECH