Method for preparing high-performance phosphogypsum-based self-leveling mortar

A self-leveling mortar and gypsum-based technology, applied in the field of building materials, can solve problems such as high equipment investment and sewage discharge, and achieve great social benefits, improve flatness, and improve the effect of bonding

Inactive Publication Date: 2019-11-12
DEQING YANGTAI BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process still faces practical production problems such as the selection of production sites, the subsequent disposal of a large amount of sewage discharge, and high investment in equipment.

Method used

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  • Method for preparing high-performance phosphogypsum-based self-leveling mortar
  • Method for preparing high-performance phosphogypsum-based self-leveling mortar

Examples

Experimental program
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Effect test

Embodiment 1

[0024] A method for preparing high-performance phosphogypsum-based self-leveling mortar, comprising the following steps:

[0025] S1, obtain raw materials, 40 parts of phosphorus building gypsum, phosphorus building gypsum comes from the calcination of phosphogypsum, 15 parts of cement, cement is ordinary Portland cement with a strength grade of 42.5 or slag Portland cement with a strength grade of 32.5, powder Coal ash 10 parts, fly ash is ordinary secondary fly ash, stone powder 3 parts, redispersible latex powder type 1.5 parts, redispersible latex powder type is one of "Wacker" 5010N or 5044N or a combination thereof , 0.05 parts of cellulose ether, 0.02 parts of carbon nanofibers, carbon nanofibers with a diameter of 50nm and a length of 50μm, 0.3 parts of water retaining agent, water retaining agent is hydroxypropyl methyl cellulose ether, viscosity range 400000-80000mpa.s, water reducer 0.1 part, 0.1 part of anti-sedimentation agent, 0.01 part of defoamer, 30 parts of f...

Embodiment 2

[0028] A method for preparing high-performance phosphogypsum-based self-leveling mortar, comprising the following steps:

[0029] S1, obtain raw materials, 50 parts of phosphorus building gypsum, phosphorus building gypsum comes from the calcination of phosphogypsum, 19 parts of cement, cement is ordinary Portland cement with a strength grade of 42.5 or slag portland cement with a strength grade of 32.5, powder Coal ash 17 parts, fly ash is ordinary secondary fly ash, stone powder 7 parts, redispersible latex powder type 2.5 parts, redispersible latex powder type is one of "Wacker" 5010N or 5044N or a combination thereof , 0.1 part of cellulose ether, 0.04 part of carbon nanofiber, diameter of carbon nanofiber is 100nm, length of 70μm, 0.5 part of water retaining agent, water retaining agent is hydroxypropyl methyl cellulose ether, viscosity range 400000-80000mpa.s, water reducer 0.8 parts, 0.3 parts of anti-sedimentation agent, 0.04 parts of defoamer, 36 parts of fine sand ag...

Embodiment 3

[0032] A method for preparing high-performance phosphogypsum-based self-leveling mortar, comprising the following steps:

[0033] S1, obtain raw materials, 60 parts of phosphorus building gypsum, phosphorus building gypsum comes from the calcination of phosphogypsum, 22 parts of cement, cement is ordinary Portland cement with a strength grade of 42.5 or slag portland cement with a strength grade of 32.5, powder Coal ash 24 parts, fly ash is ordinary secondary fly ash, stone powder 10 parts, redispersible latex powder type 4 parts, redispersible latex powder type is one of "Wacker" 5010N or 5044N or a combination thereof , 0.15 parts of cellulose ether, 0.06 parts of carbon nanofibers, carbon nanofibers with a diameter of 200nm and a length of 100μm, 0.8 parts of water retaining agent, water retaining agent is hydroxypropyl methyl cellulose ether, viscosity range 400000-80000mpa.s, water reducer 1.3 parts, 0.4 parts of anti-sedimentation agent, 0.08 parts of defoaming agent, 42...

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Abstract

The invention relates to the technical field of building materials, and discloses a method for preparing a high-performance phosphogypsum-based self-leveling mortar. The method comprises the followingsteps: S1, obtaining raw materials comprising 40-60 parts of phosphorus building gypsum, 15-22 parts of cement, 10-24 parts of fly ash, 3-10 parts of stone powder, 1.5-4 parts of a redispersible latex powder, 0.05-0.15 part of cellulose ether, 0.02-0.06 part of a nano-carbon fiber, 0.3-0.8 part of a water retaining agent, 0.1-1.3 parts of a water reducer, 0.1-0.4 part of an anti-settling agent, 0.01-0.08 part of a defoaming agent and 30-42 parts of fine sand aggregates; and S2, mixing the materials obtained in step S1, stirring the obtained mixture until uniformity, and adding water accounting for 13-15% of the total weight of the mixture and performing stirring until uniformity when the mortar is used. The reinforcement of a phosphogypsum-based self-leveling material and the high fracture toughness of the carbon fiber effectively reduce and inhibit the expansion of matrix cracks, and greatly improve the interfacial pore structure of the self-leveling material. The method of the invention improves the bonding degree of the interface of the phosphogypsum matrix, increases the toughness of the phosphogypsum matrix and increases the overall strength.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a preparation method for high-performance phosphogypsum-based self-leveling mortar. Background technique [0002] With the continuous improvement of the country's requirements for environmental protection and ecological civilization construction, the contradiction of large-stock disposal of phosphogypsum left over from history has become more and more prominent. In recent years, the company has carried out research on the difficulties and hot spots in the resource treatment of phosphogypsum, and developed comprehensive utilization of phosphogypsum High value-added products and production equipment will definitely make a significant contribution to promoting the in-depth utilization of phosphogypsum and solving the sustainable development of the phosphate fertilizer industry. [0003] Patent 201110039548.3 discloses a phosphogypsum self-leveling material, but its main c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B111/62C04B111/34
CPCC04B28/143C04B2111/343C04B2111/62C04B7/02C04B18/08C04B14/02C04B2103/0057C04B24/383C04B14/386C04B2103/302C04B2103/0082C04B2103/50C04B14/06C04B22/002C04B7/14
Inventor 邵千江林逸伦林德
Owner DEQING YANGTAI BUILDING MATERIAL
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