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Method for preparing flame-retardant concrete material by virtue of high-aluminum mineral slag and building waste

A technology of construction waste and waste concrete, which is applied in the field of building materials, can solve the problems of increasing construction costs and environmental damage, and achieves the effect of good flame retardant function and simple preparation process

Inactive Publication Date: 2018-07-03
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Transporting and burying these wastes requires a lot of manpower, material resources and land resources, which not only causes environmental damage but also increases construction costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for preparing fire-resistant concrete materials using high-alumina slag and construction waste, the method includes the following processes:

[0026] High alumina slag, waste concrete residue, potassium extraction waste slag, and waste glass slag are crushed and ball milled to obtain powder with an average particle size of 10 to 30 microns; the high alumina slag, waste concrete residue, potassium extraction waste slag, and waste glass slag are The ratio of parts by weight is 10:20:20:40.

[0027] After the high-alumina slag, waste concrete residue, and waste glass slag powder are mixed evenly, water is added to the obtained mixed powder and stirred to obtain a mixed slurry; sodium hydroxide is added to the mixed slurry in an amount equal to the mass of the potassium-extracting slag powder After stirring evenly, sinter at 1100°C for 18 hours to obtain an intermediate test block;

[0028] Immerse the intermediate test piece in a mixed solution composed of perlit...

Embodiment 2

[0030] A method for preparing fire-resistant concrete materials using high-alumina slag and construction waste, the method includes the following processes:

[0031] The high-alumina slag, waste concrete residue, potassium extraction waste slag, and waste glass slag are crushed and ball-milled to obtain a powder with an average particle size of 10-20 microns; the high-alumina slag, waste concrete residue, potassium extraction waste slag, and waste glass slag are The ratio of parts by weight is 30:15:15:50.

[0032] After the high-alumina slag, waste concrete residue, and waste glass slag powder are mixed evenly, water is added to the obtained mixed powder and stirred to obtain a mixed slurry; sodium hydroxide is added to the mixed slurry in an amount equal to the mass of the potassium-extracting slag powder After stirring evenly, sinter at 1180°C for 18 hours to obtain an intermediate test piece;

[0033] Immerse the intermediate test piece in a mixed solution composed of per...

Embodiment 3

[0035] A method for preparing fire-resistant concrete materials using high-alumina slag and construction waste, the method includes the following processes:

[0036] The high-alumina slag, waste concrete residue, potassium extraction waste slag, and waste glass slag are crushed and ball-milled to obtain a powder with an average particle size of 20 to 40 microns; the high-alumina slag, waste concrete residue, potassium extraction waste slag, and waste glass slag are The ratio of parts by weight is 30:20:17.5:42.5;

[0037] After the high-alumina slag, waste concrete residue, and waste glass slag powder are mixed evenly, water is added to the obtained mixed powder and stirred to obtain a mixed slurry; sodium hydroxide is added to the mixed slurry in an amount equal to the mass of the potassium-extracting slag powder After stirring evenly, sinter at 1120°C for 24 hours to obtain an intermediate test piece;

[0038] Immerse the intermediate test piece in a mixed solution consisti...

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Abstract

The invention relates to a method for preparing a flame-retardant concrete material by virtue of high-aluminum mineral slag and building waste, belonging to the field of building materials. The methodcomprises the following steps: uniformly mixing the high-aluminum mineral slag, waste concrete residue and waste glass powder, adding water into mixed powder, and stirring, so as to obtain mixed slurry; adding 1%-5% of sodium hydroxide into the mixed slurry according to the mass of potassium extraction mineral slag powder, uniformly stirring, and sintering at 1100-1200 DEG C for 12-24 hours, so as to obtain an intermediate test block; and soaking the intermediate test block into mixed liquid consisting of perlite powder, vinyl acetate homopolymer powder and water for 2-12 hours, drying, and carrying out natural maintenance for 7-14 days. According to the method, by utilizing building waste solids as the main raw materials and a soaking method, the flame-retardant concrete material has a fire-resistant function; and the preparation process is simple, and the obtained material has relatively good flame retardance.

Description

technical field [0001] The invention relates to a method for preparing flame-retardant concrete materials by using high-aluminum slag and construction waste, and belongs to the field of building materials. Background technique [0002] With the rapid development of China's domestic real estate industry, more and more construction waste is obtained from demolition, which has brought a huge burden to the urban environment and waste. Transporting and burying these wastes requires a lot of manpower, material and land resources, which not only causes environmental damage but also increases construction costs. [0003] At the same time, the floors of newly-added buildings are getting higher and higher, correspondingly, the requirements for fire prevention are also getting higher and higher. In order to solve this problem, on the one hand, it is necessary to build relatively complete fire extinguishing measures in the building; on the other hand, it is necessary to improve the fla...

Claims

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Application Information

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IPC IPC(8): C04B30/00C04B18/16C04B18/14C04B41/50C04B35/66C04B111/28
CPCC04B18/141C04B18/167C04B30/00C04B35/66C04B41/009C04B41/5024C04B2111/28C04B18/0427C04B22/062C04B41/4869C04B41/4539Y02W30/91
Inventor 谢丽媛赵岩张宏民
Owner DALIAN UNIV OF TECH
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