Building mortar and method for preparing same

A mortar and construction technology, applied in the field of construction mortar and its preparation, can solve the problems of affecting project progress, affecting building functions, unfavorable energy saving and consumption reduction, etc., and achieve the effects of protecting the environment, normal setting time, and saving coal consumption

Inactive Publication Date: 2009-01-07
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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, not con

Method used

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  • Building mortar and method for preparing same
  • Building mortar and method for preparing same
  • Building mortar and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] According to the percentage by weight of each raw material: quartz sand (medium sand, through 5mm sieve) 79.99%, limestone powder (specific surface area 856m 2 / kg) 12.00%, slag powder (specific surface area 356m 2 / kg) 5.60%, phosphogypsum powder (specific surface area 978m 2 / kg) 1.00%, ordinary cement (P.O42.5 grade, specific surface area 342m 2 / kg) 1.40%, methyl cellulose ether 0.01%; quartz sand, limestone powder, slag powder, phosphogypsum powder, ordinary cement and methyl cellulose ether are stirred evenly to make dry material; The weight ratio is 1:0.12, dry materials and water are selected, and the dry materials are added with water and stirred evenly to obtain building mortar (dry-mixed masonry mortar). Then 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 meet the requirements of DGJ32 / J13-2005 Ready-mixed Mortar Technical Regulations.

[0026] Table...

Embodiment 2

[0029] According to the percentage by weight of each raw material: quartz sand (medium sand, through 2.5mm sieve) 76.68%, limestone powder (specific surface area 856m 2 / kg) 13.95%, slag powder (specific surface area 356m 2 / kg) 6.51%, phosphogypsum powder (specific surface area 978m 2 / kg) 1.16%, ordinary cement (P.O42.5 grade, specific surface area 342m 2 / kg) 1.63%, calcium lignoxanthate 0.05%, methyl cellulose ether 0.02%; quartz sand, limestone powder, slag powder, phosphogypsum powder, ordinary cement, calcium lignoxanthate and methyl cellulose ether Stir evenly to make dry materials; then select dry materials and water according to the weight ratio of dry materials and water as 1:0.12, add water to the dry materials and stir evenly to obtain building mortar (dry-mixed plastering mortar). Then according to JGJ70-1990 "Basic Performance Test Method of Building Mortar" and JGJ / T136-2001 "Technical Regulations for Testing the Compressive Strength of Masonry Mortar by Pene...

Embodiment 3

[0033] According to the percentage by weight of each raw material: quartz sand (medium sand, through 5mm sieve) 66.60%, limestone powder (specific surface area 856m 2 / kg) 20.00%, slag powder (specific surface area 356m 2 / kg) 9.33%, phosphogypsum powder (specific surface area 978m 2 / kg) 1.67%, ordinary cement (P.O42.5 grade, specific surface area 342m 2 / kg) 2.33%, calcium lignoxanthate 0.05%, base cellulose ether 0.02%; mix quartz sand, limestone powder, slag powder, phosphogypsum powder, ordinary cement, calcium lignoxanthate and base cellulose ether Make dry material; then select dry material and water according to the weight ratio of dry material and water as 1:0.12, add water to the dry material and stir evenly to obtain building mortar (dry-mixed ground mortar). Then according to JGJ70-1990 "Basic performance test method of building mortar", the results are shown in Table 3, it can be seen that all technical indicators are in line with the requirements of DGJ32 / J13-2...

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Abstract

The invention belongs to the technical field of a constructional material, in particular relates to building used mortar used for masonry and plastering of buildings and ground, and a preparation method thereof. The building mortar is characterized in that the building motor is prepared with a dry material and water though mixing according to the ratio of 1 to 0.03 to 0.35 by weight; the dry material is prepared with 60 to 80 percent of quartz sand, 7 to 30 percent of ground limestone, 1 to 20 percent of powdered industrial residue, 0.1 to 4 percent of land plaster, 0.1 to 8 percent of mineral admixture, and 0 to 0.1 percent of chemical additives by weight. The additive is any of or the mixture of a plasticizer and a gelatinizer at a discretionary ratio. The building mortar has the characteristics of low cost, high strength, and low dissipation of energy. The preparation method is operated easily.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a building mortar used for building masonry, plastering and grounding 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. In addition, because the current mortar production method has been mixing at the constr...

Claims

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Application Information

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IPC IPC(8): C04B18/04C04B14/06
CPCC04B2103/30C04B2103/44C04B2111/00517C04B28/14Y02W30/91C04B7/02C04B14/06C04B14/28C04B18/141C04B22/064C04B18/142C04B18/08C04B24/18C04B24/2623C04B24/34C04B24/383
Inventor 林宗寿黄赟赵前刘金军欧小弟
Owner WUHAN UNIV OF TECH
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