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Gypsum base hydraulicity building mortar and preparation method thereof

A water-based, hard technology, applied in the field of gypsum-based hydraulic building mortar for construction and its preparation, can solve the problems of pollution, occupation of large land environment, etc., and achieve the effects of reducing cost, normal setting time and high water retention rate

Inactive Publication Date: 2009-03-18
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These phosphogypsums are discarded in large quantities, occupying a large amount of land when stacked and causing environmental pollution

Method used

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  • Gypsum base hydraulicity building mortar and preparation method thereof
  • Gypsum base hydraulicity building mortar and preparation method thereof
  • Gypsum base hydraulicity building mortar and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] According to the percentage by weight of each raw material of the mixed material: quartz sand (medium sand, passing through a 5mm sieve) 79.99%, phosphogypsum powder (specific surface area 532m 2 / kg) 9.00%, slag powder (specific surface area 424m 2 / kg) 7.20%, limestone powder (specific surface area 884m 2 / kg) 3.00%, Portland cement clinker (specific surface area 379m 2 / kg) 0.80%, methyl cellulose ether 0.01%; mix quartz sand, phosphogypsum powder, slag powder, limestone powder, Portland cement clinker powder and methyl cellulose ether to make a mixture; then press The weight ratio of the mixed material to water is 1:0.50, add water and stir evenly to obtain gypsum-based hydraulic construction mortar.

[0033] Then test according to JGJ70-1990 "Basic Performance Test Method of Building Mortar", the results are shown in Table 1, it can be seen that all technical indicators are in line with DMM7.5 dry-mixed masonry mortar in DGJ32 / J13-2005 Ready-mixed Mortar Technica...

Embodiment 2

[0037] According to the percentage by weight of each raw material of the mixed material: quartz sand (medium sand, through 2.5mm sieve) 76.68%, phosphogypsum powder (specific surface area 532m 2 / kg) 10.47%, slag powder (specific surface area 424m 2 / kg) 8.37%, limestone powder (specific surface area 884m 2 / kg) 3.49%, Portland cement clinker (specific surface area 379m 2 / kg) 0.93%, calcium lignoxanthate 0.05%, methyl cellulose ether 0.01%; quartz sand, phosphogypsum powder, slag powder, limestone powder, Portland cement clinker, calcium lignoxanthate and formazan The base cellulose ether is stirred evenly to make a mixed material; then the weight ratio of the mixed material to water is 1:0.50, the mixed material and water are selected, and the mixed material is added with water and stirred evenly to obtain a gypsum-based hydraulic construction mortar.

[0038] Then according to JGJ70-1990 "Basic Performance Test Method of Building Mortar" and JGJ / T136-2001 "Technical Regula...

Embodiment 3

[0042] According to the percentage by weight of each raw material of the mixed material: quartz sand (medium sand, passing through a 5mm sieve) 66.60%, phosphogypsum powder (specific surface area 532m 2 / kg) 15.00%, slag powder (specific surface area 424m 2 / kg) 12.00%, limestone powder (specific surface area 884m 2 / kg) 5.00%, Portland cement clinker (specific surface area 379m 2 / kg) 1.33%, calcium lignoxanthate 0.05%, methyl cellulose ether 0.02%; quartz sand, phosphogypsum powder, slag powder, limestone powder, Portland cement clinker, calcium lignoxanthate and formazan The base cellulose ether is stirred evenly to make a mixed material; then the weight ratio of the mixed material to water is 1:0.50, the mixed material and water are selected, and the mixed material is added with water and stirred evenly to obtain a gypsum-based hydraulic construction mortar.

[0043] Then test according to JGJ70-1990 "Basic Performance Test Method of Building Mortar", the results are sho...

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Abstract

The invention belongs to the technical field of building material, in particular to building mortar for the laying, plastering and paving for a building and a method for preparing the same. The gypsum based hydraulicity building mortar is characterized in that the mortar is formed by the mixing and stirring of a mixed material and water, and the weight ratio of the mixed material to water is between 1:0.20 and 0.85; the mixed material comprises the following materials in weight percentage: 60 to 80 percent of quartz sand, 6.0 to 20.0 percent of gypsum powder, 6 to 20 percent of slag powder, 0.01 to 10 percent of limestone powder, 0.01 to 3 percent of mineral admixture and 0 to 0.1 percent of chemical additive; the chemical additive is one or a mixture of the two of plasticizing agent and thickener at any blending ratio. The invention has the characteristics of low cost, high strength and low energy consumption, and the method has the advantages of simple process and easy operation.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a gypsum-based hydraulic building mortar used for building masonry, plastering and ground and a preparation method thereof. Background technique [0002] As a building material, mortar has a history of thousands of years. By the end of the 19th century, the main binder of mortar was still slaked lime. The emergence of cement has replaced slaked lime as the main binder for mortar production. At present, the amount of cement used in construction mortar accounts for 25% to 35% of the total amount of cement used in construction projects. Usually, 32.5 strength grade cement is used to prepare construction mortar. In order to ensure the workability of mortar, the amount of cement used is often relatively large, which usually results in Waste is not conducive to energy saving and cost reduction. [0003] Gypsum resources are abundant, especially industrial by-pr...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B14/06C04B18/12C04B14/28
CPCC04B28/14Y02W30/91C04B7/02C04B14/06C04B14/28C04B18/141C04B18/142C04B22/06C04B22/064C04B22/08C04B2103/30C04B2103/44C04B24/18C04B24/2623C04B24/34C04B24/383
Inventor 林宗寿刘金军黄赟赵前欧小弟
Owner WUHAN UNIV OF TECH
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