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A kind of mortar using thermal power plant solid waste light aggregate as raw material, a method for preparing mortar and a prefabricated component prepared

A technology for thermal power plants and light aggregates, applied in the field of building materials, can solve the problems of poor water resistance, affect product performance, low strength, etc., and achieve the effects of promoting alkaline excitation reaction, reducing process treatment costs, and reducing pollution emissions.

Active Publication Date: 2022-07-15
山东亮普建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the general β-gypsum has important defects such as low strength and poor water resistance after hydration, which seriously affects the performance of the product and affects the engineering application in the construction field.
[0005] 3. Bottom slag
[0006] To sum up, the solid waste generated by thermal power plants has not been effectively utilized in the field of building materials, especially in one-time comprehensive utilization.

Method used

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  • A kind of mortar using thermal power plant solid waste light aggregate as raw material, a method for preparing mortar and a prefabricated component prepared
  • A kind of mortar using thermal power plant solid waste light aggregate as raw material, a method for preparing mortar and a prefabricated component prepared
  • A kind of mortar using thermal power plant solid waste light aggregate as raw material, a method for preparing mortar and a prefabricated component prepared

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] A mortar using solid waste light aggregates from thermal power plants as raw materials, the mortar comprises the following raw materials in parts by weight on a dry basis: 10 parts of α-desulfurized gypsum (initial setting time is 5 minutes), β-desulfurization gypsum (initial setting time is 3 minutes) 15 parts, 20 parts of modified components, and 0.8 parts of admixtures;

[0058] Wherein, the modified component includes the following raw materials on a dry basis: slag (specific surface area 600㎡ / kg; density of the slag 2.85g / cm 3 ; the activity index of the slag is 118%) 70 parts, quicklime 8 parts, micro-silica powder (silicon dioxide content 96%; the fineness of the micro-silica powder is ≤ 0.8μm in the weight ratio of the micro-silica powder 85%) 6 parts, calcium stearate 4 parts;

[0059] The admixture includes the following raw materials in parts by weight on a dry basis: 1.5 parts of hydroxypropyl methyl cellulose ether, 5 parts of calcium bentonite, 3.5 parts...

Embodiment 2

[0061] A mortar using solid waste light aggregates from thermal power plants as raw materials, the mortar comprises the following raw materials in parts by weight on a dry basis: 12 parts of α-desulfurized gypsum (initial setting time is 5 minutes), β-desulfurization gypsum (initial setting time is 3 minutes) 42 parts, fly ash (free calcium oxide 2.8%) 22 parts, bottom slag secondary mixture (chloride ion content 200mg / kg; the particle size of the bottom slag secondary mixture is 3-5mm) 18 parts , 22 parts of modified components, 0.8 parts of admixtures;

[0062] Wherein, the modified component includes the following raw materials by weight on a dry basis: slag (specific surface area: 560 m2 / kg; density of the slag: 2.8 g / cm) 3 ; the activity index of the slag is 116%) 72 parts, quicklime 9 parts, micro-silica powder (silicon dioxide content 95%; the fineness of the micro-silica powder is ≤ 0.8μm in the weight ratio of the micro-silica powder 82%) 3~10 parts, calcium stearate...

Embodiment 3

[0065] A kind of mortar using the solid waste light aggregates of thermal power plants as raw materials, the mortar comprises the following raw materials in parts by weight on a dry basis: 8 parts of α-desulfurized gypsum (initial setting time is 5min), β-desulfurization gypsum (initial setting time is 3min) 38 parts, fly ash (free calcium oxide 2.9%) 18 parts, bottom slag secondary mixture (chloride ion content 200mg / kg; the particle size of the bottom slag secondary mixture is 3-5mm) 12 parts , 18 parts of modified components, 0.6 parts of admixtures;

[0066] Wherein, the modified component includes the following raw materials by weight on a dry basis: slag (specific surface area 555㎡ / ㎏; density of the slag 2.85g / cm 3 ; the activity index of the slag is 117%) 68 parts, quicklime 6 parts, micro-silica powder (silicon dioxide content 95.5%; the fineness of the micro-silica powder is ≤ 0.8μm in the weight ratio of the micro-silica powder 80% or more) 4 parts, 3 parts of calci...

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Abstract

The invention discloses a mortar using solid waste light aggregates of thermal power plants as raw materials, a method for preparing the mortar and a prepared prefabricated component. The mortar includes the following raw materials: 5-15 parts of alpha desulfurization gypsum, 35-45 parts of beta desulfurization gypsum, powder 15-25 parts of coal ash, 10-20 parts of bottom slag secondary mixture, 15-25 parts of modified components, and 0.5-1 part of admixture; wherein, the modified components include: 65-75 parts of slag, quicklime 5-10 parts, 3-10 parts of microsilica, 2-5 parts of calcium stearate; admixtures include: 0.5-3 parts of hydroxypropyl methyl cellulose ether, 4.5-6.5 parts of calcium bentonite, polypropylene fiber 0.5 to 5 parts, 1 to 5 parts of borax, and 0.1 to 1 part of polycarboxylic acid. The raw materials are stirred and mixed to obtain mortar, and the wet-base mortar is cast and formed to obtain a prefabricated component. The invention comprehensively utilizes all the solid wastes generated by the thermal power plant to achieve the social and environmental protection benefits of circular economy and land saving.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a technology for preparing mortar by using solid waste light aggregates of thermal power plants. Background technique [0002] There are three main types of waste residues produced by thermal power plants: fly ash, bottom slag, and desulfurized gypsum. At present, the utilization of these three kinds of waste residues mainly has the following problems: [0003] 1. Fly ash. The comprehensive utilization rate of fly ash is relatively high, but it must be ground and screened before it can be widely used in the field of building materials, which increases the cost of fly ash and affects the comprehensive utilization of fly ash to a certain extent. [0004] 2. Desulfurized gypsum. Desulfurization gypsum is a product of the desulfurization process of power plants. The comprehensive utilization of desulfurization gypsum has just started, and people generally do not know en...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B24/38C04B24/24C04B24/08C04B22/08C04B22/06C04B22/00C04B18/10C04B18/08C04B16/06B28C5/00B28B1/00C04B111/27
CPCC04B28/144C04B18/08C04B18/10C04B22/0006C04B22/064C04B24/08C04B24/383C04B22/08C04B16/0633C04B24/24B28C5/003B28B1/00C04B2201/50C04B2111/27C04B2111/00017Y02W30/91
Inventor 刘会泉武峰王参王凯成晓光张德成
Owner 山东亮普建材科技有限公司
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