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Mortar dry powder and preparation method thereof

A technology for mortar dry powder and sand and gravel, which is applied in the field of mortar dry powder and its preparation, can solve problems such as poor cohesiveness of mortar, and achieve the effects of good moisture resistance and cohesive effect, small weight gain, and not easy to agglomerate.

Active Publication Date: 2022-07-26
宁波新广亿建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the defect of poor mortar adhesion, the application provides a dry mortar powder and its preparation method

Method used

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  • Mortar dry powder and preparation method thereof
  • Mortar dry powder and preparation method thereof
  • Mortar dry powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-7

[0043] Weigh PVA, shellac, hydroxypropyl cellulose, polypropylene resin, ethyl cellulose respectively, the specific quality is shown in Table 1, and stir and mix to obtain moisture-proof agents 1-7.

[0044] Table 1 Preparation Example 1-7 Moisture-proofing agent composition

[0045]

[0046] Example of preparation of dispersant

preparation example 8-13

[0048] Weigh the polyvinylpyrrolidone-vinyl acetate copolymer, sodium carboxymethylcellulose-polyethylene glycol copolymer and methacrylic acid-ethyl acrylate copolymer respectively, the specific quality is shown in Table 2, stir and mix to obtain dispersant 1 -6.

[0049] Table 2 Preparation Example 8-13 Dispersant Composition

[0050]

[0051] Preparation example of dispersion-modified moisture-proofing agent

preparation example 14

[0053] The dispersing agent 1 and the moisture-proofing agent 1 are stirred and mixed to obtain the dispersion-modified moisture-proofing agent 1.

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Abstract

The invention relates to the technical field of building materials, and particularly discloses dry mortar powder and a preparation method thereof. The mortar dry powder comprises the following substances in parts by weight: 20-50 parts of gravel, 40-80 parts of a cementing material, 1-2 parts of a water-retaining agent and 1-2 parts of a water reducing agent, the cementing material comprises cement, the cementing material is a cementing material subjected to moisture-proof modification by a moisture-proof agent, and the moisture-proof agent comprises PVA and lac in a mass ratio of (4-6): (0.1-0.2). The preparation method comprises the following steps: S1, preparing the cementing material; s2, mortar preparation. The mortar dry powder can be used for building plastering, brick bonding and the like, and has the advantages of being not prone to caking and excellent in bonding performance.

Description

technical field [0001] The present application relates to the field of building materials, in particular to a dry mortar powder and a preparation method thereof. Background technique [0002] Mortar usually refers to the bonding material used in building bricks. It is usually composed of sand and cement, lime, clay and other bonding materials plus water, also known as mortar. Mortar can be divided into cement mortar, mixed mortar, lime mortar, clay mortar and so on according to the composition. Mortar includes ready-mixed mortar and mortar dry powder. Ready-mixed mortar is pre-mixed with mortar and water, transported to the construction site by tanker for output, and ready for use. The use of dry mortar powder is to mix the dry mortar powder with water according to the needs of use after transporting the dry mortar powder to the construction site, and then use it. [0003] Since the mortar and water are mixed and dried, they harden, and the mortar usually exists in the for...

Claims

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Application Information

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IPC IPC(8): C04B28/02C04B111/27C04B111/34
CPCC04B28/02C04B2201/10C04B2111/27C04B2111/343C04B18/26C04B18/08C04B14/02C04B14/06C04B2103/0057C04B24/2623C04B24/2611C04B24/383C04B24/2652C04B24/26C04B24/38C04B24/302C04B2103/0068C04B2103/302Y02W30/91
Inventor 张立
Owner 宁波新广亿建材有限公司
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