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Mortar using thermal power plant solid waste light aggregate as raw material, mortar preparation method and prepared prefabricated part

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 improving strength and impermeability, improving product strength, and improving workability.

Active Publication Date: 2020-09-25
山东亮普建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Mortar using thermal power plant solid waste light aggregate as raw material, mortar preparation method and prepared prefabricated part
  • Mortar using thermal power plant solid waste light aggregate as raw material, mortar preparation method and prepared prefabricated part
  • Mortar using thermal power plant solid waste light aggregate as raw material, mortar preparation method and prepared prefabricated part

Examples

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Embodiment 1

[0057] A kind of mortar that utilizes solid waste light aggregates from thermal power plants as raw materials, the mortar includes 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) 40 parts, 20 parts of fly ash (free calcium oxide ≤ 3%), bottom slag secondary mixture (chloride ion content 180mg / kg; the particle size of the bottom slag secondary mixture is 3-5mm) 15 parts, 20 parts of modified components, and 0.8 parts of admixtures:

[0058] Wherein, the modification component comprises the raw material of following dry weight part: slag (specific surface area 600m 2 / ㎏; The density of the slag is 2.85g / cm 3 ; The activity index of described slag 118%) 70 parts, 8 parts of unslaked lime, microsilica powder (silicon dioxide content 96%; In described microsilica powder, fineness is ≤ 0.8 μ m and accounts for described microsilica powde...

Embodiment 2

[0061] A kind of mortar that utilizes solid waste light aggregates from thermal power plants as raw materials. The mortar includes 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, 22 parts of fly ash (free calcium oxide 2.8%), 18 parts of bottom slag secondary mixture (chloride ion content 200mg / kg; the particle size of the bottom slag secondary mixture is 3-5mm) , 22 parts of modified components, 0.8 parts of admixture;

[0062] Wherein, the modified component comprises the following raw materials in dry weight parts: slag (specific surface area 560m 2 / ㎏; The density of the slag is 2.8g / cm 3 ; The activity index of described slag is 116%) 72 parts, 9 parts of unslaked lime, microsilica powder (silicon dioxide content 95%; In described microsilica powder, fineness is ≤ 0.8 μ m to account for described microsilica powder w...

Embodiment 3

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

[0066] Wherein, the modified component comprises the following raw materials in dry weight parts: slag (specific surface area 555m 2 / ㎏; The density of the slag is 2.85g / cm 3 ; The activity index of described slag is 117%) 68 parts, 6 parts of unslaked lime, microsilica powder (silicon dioxide content 95.5%; In described microsilica powder, fineness is ≤ 0.8 μ m accounted for described microsilica powder weight ratio 80% o...

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Abstract

The invention discloses mortar using thermal power plant solid waste light aggregate as a raw material, a mortar preparation method and a prepared prefabricated part. The mortar comprises the following raw materials in parts by weight: 5-15 parts of alpha desulfurized gypsum, 35-45 parts of beta desulfurized gypsum, 15-25 parts of fly ash, 10-20 parts of a secondary mixture of furnace bottom slag,15-25 parts of a modified component and 0.5-1 part of an additive; wherein the modified component comprises 65-75 parts of slag, 5-10 parts of quick lime, 3-10 parts of silica fume and 2-5 parts of calcium stearate; and the additive comprises the following components in parts by weight: 0.5-3 parts of hydroxypropyl methyl cellulose ether, 4.5-6.5 parts of calcium bentonite, 0.5-5 parts of polypropylene fiber, 1-5 parts of borax and 0.1-1 part of polycarboxylic acid. The raw materials are stirred and mixed to obtain mortar, the wet-based mortar is subjected to casting molding, and the prefabricated part is prepared. Solid waste generated by a thermal power plant is completely and comprehensively utilized, and social and environment-friendly benefits of circular economy and land saving areachieved.

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 from thermal power plants. Background technique [0002] There are three main types of waste slag produced by thermal power plants: fly ash, bottom slag, and desulfurized gypsum. The utilization of these three kinds of waste residues mainly has the following problems at present: [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 used in large quantities 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. Desulfurization gypsum. Desulfurization gypsum is a product of desulfurization process in power plants. The comprehensive utilization of desulfurization gypsum has just started, and people generally do no...

Claims

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Application Information

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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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