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Waterproof dry-mixed mortar and production process thereof

A technology of dry-mixed mortar and production process, applied in the field of mortar production, which can solve the problems of high raw material cost, poor construction workability, poor impermeability, etc., and achieve good durability, reduce the amount of large particles or impurities, and good waterproof performance Effect

Active Publication Date: 2021-05-14
浙江龙游通衢建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a waterproof dry-mixed mortar and its production process to solve the problems of high raw material cost, poor construction workability, low cohesive force, poor impermeability, easy cracking, falling off and leakage proposed in the above background technology The problem

Method used

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  • Waterproof dry-mixed mortar and production process thereof
  • Waterproof dry-mixed mortar and production process thereof
  • Waterproof dry-mixed mortar and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A waterproof dry-mixed mortar, comprising the following powders, the components are calculated as percentages by weight:

[0040]

[0041] The mixed sand includes yellow sand and improved powder, and the yellow sand replacement rate of the improved powder is 30-%-35%. The improved powder includes fly ash and stone powder, and the ratio of fly ash and stone powder is 5:1.

[0042] The redispersible polymer rubber powder is selected from HPMC-45000, and the silicone waterproofing agent is a composite siloxane formed by copolymerization of polydimethylsiloxane and long carbon chain alkylpolysiloxane.

[0043] The water-retaining thickener is formed by mixing starch ether, cellulose ether and bentonite, and the mixing ratio of the starch ether, cellulose ether and bentonite is 1:4:10.

[0044]The additives include expansion agent and water reducer, the weight percentage of the expansion agent is 6.5%, and the rest is water reducer.

[0045] The expansion agent is calciu...

Embodiment 2

[0048] A waterproof dry-mixed mortar, comprising the following powders, the components are calculated as percentages by weight:

[0049]

[0050]

[0051] The mixed sand includes yellow sand and improved powder, and the yellow sand replacement rate of the improved powder is 30-%-35%. The improved powder includes fly ash and stone powder, and the ratio of fly ash and stone powder is 5:1.

[0052] The redispersible polymer rubber powder is selected from HPMC-45000, and the silicone waterproofing agent is a composite siloxane formed by copolymerization of polydimethylsiloxane and long carbon chain alkylpolysiloxane.

[0053] The water-retaining thickener is formed by mixing starch ether, cellulose ether and bentonite, and the mixing ratio of the starch ether, cellulose ether and bentonite is 1:4:10.

[0054] The admixture comprises an expansion agent and a water reducer, the weight percentage of the expansion agent is 8%, and the rest is a water reducer.

[0055] The expan...

Embodiment 3

[0058] A waterproof dry-mixed mortar, comprising the following powders, the components are calculated as percentages by weight:

[0059]

[0060] The mixed sand includes yellow sand and improved powder, and the yellow sand replacement rate of the improved powder is 30-%-35%. The improved powder includes fly ash and stone powder, and the ratio of fly ash and stone powder is 5:1.

[0061] The redispersible polymer rubber powder is selected from HPMC-45000, and the silicone waterproofing agent is a composite siloxane formed by copolymerization of polydimethylsiloxane and long carbon chain alkylpolysiloxane.

[0062] The water-retaining thickener is formed by mixing starch ether, cellulose ether and bentonite, and the mixing ratio of the starch ether, cellulose ether and bentonite is 1:4:10.

[0063] The admixture comprises an expansion agent and a water reducer, the weight percentage of the expansion agent is 6%, and the rest is a water reducer.

[0064] The expansion agent i...

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Abstract

The invention discloses waterproof dry-mixed mortar and a production process thereof, and belongs to the technical field of mortar production. The dry-mixed mortarcomprises the following components in percentage by weight: 40%-60% of ordinary Portland cement, 30%-50% of mixed sand, 1%-1.5% of redispersible polymer rubber powder, 0.2%-1.2% of an organic silicon waterproof agent, 0%-0.3% of fibers, 0.6%-1.5% of a water-retaining thickening agent and the balance of an additive. The dry-mixed mortaris prepared through the following processes: screening all components of the mixed sand through a screening device, performing metering according to a ratio, and then performing mixing; metering and mixing the starch ether, the cellulose ether and the bentonite according to the proportion to obtain a water-retaining thickening agent; metering and mixing ordinary Portland cement, screened and mixed sand, redispersible polymer rubber powder, an organic silicon waterproof agent, fibers, a water-retaining thickening agent and an additive according to a ratio to prepare a dry mixture; and dispersing and packaging the dry mixture to obtain a finished product. The performance of the mortar in all aspects is improved, a certain raw material cost can be saved, construction is convenient, the waterproof performance and the cracking resistance are excellent, and the durability is good.

Description

technical field [0001] The invention relates to the technical field of mortar production, in particular to a waterproof dry-mixed mortar and a production process thereof. Background technique [0002] my country is both a big cement producer and a big cement consumer. According to incomplete statistics, 70% of cement is used for concrete preparation every year, and 30% is used for the production of cement mortar. Cement mortar plays the role of bonding, lining and transmitting stress in construction engineering. Like traditional concrete, cement mortar used to be made by mixing cement and sand with water at the construction site. With the development of society and technological progress, the market's requirements for product refinement and diversification have increased, and the "ready-mixed mortar" produced by professional mortar manufacturers has become an effective means to solve these problems, including: wet-mixed mortar and dry-mixed mortar mortar. On August 1, 20...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04C04B24/38C04B24/42C04B18/08C04B111/27C04B103/46C04B103/44C04B103/65
CPCC04B24/42C04B28/04C04B40/0039C04B2103/44C04B2103/46C04B2103/65C04B2111/27C04B14/068C04B18/08C04B14/02C04B2103/0057C04B16/0633C04B22/142C04B2103/302C04B24/38C04B24/383C04B22/00Y02W30/91
Inventor 韩杰陈雄伟张樟雄
Owner 浙江龙游通衢建材有限公司
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