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A plasticizing enhancer for slump-preserving dry powder mortar

A plasticizing enhancer and dry powder mortar technology, which is applied in the field of construction admixtures, can solve the problems of unsatisfactory compressive strength and slump of dry powder mortar, restricting the development of dry powder mortar, and large slump loss, etc., to achieve good slump Slump retention ability, slump stability maintenance, and fluidity improvement effect

Active Publication Date: 2018-05-22
GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the development of dry powder mortar, some of its own defects are gradually exposed: low strength level, large slump loss, and difficult to guarantee workability
Although such a solution has achieved certain results, and many studies have been carried out, such as Chinese patents CN103819117A, CN102976655A, CN102964077B, etc., the compressive strength and slump of dry powder mortar are not so ideal
This restricts the development of dry powder mortar to a great extent

Method used

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  • A plasticizing enhancer for slump-preserving dry powder mortar

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A slump-preserving dry powder mortar plasticizing enhancer is prepared from the following components in parts by weight: 7 parts of acrylamide-acrylic acid copolymer, 6 parts of styrene acetate copolymer, 18 parts of plasticizer, montmorillonite 22 parts of stone, 12 parts of glass beads, 3 parts of calcium carbonate, 4 parts of calcium aluminate, 3 parts of calcium nitrate, 2 parts of barium sulfate, 5 parts of calcium acetate, 6 parts of modified sisal fiber, 5 parts of calcium carbonate whiskers , 18 parts of potato flour, 5 parts of gelatin, 7 parts of diatomaceous earth, 4 parts of carboxymethyl cellulose ether, 0.2 part of silicone defoamer;

[0032] The plasticizer is composed of 2 parts of methacrylic acid as the main chain, PEO branched polycarboxylic acid, 2 parts of acrylic acid as the main chain, EO branched polycarboxylic acid, and 2 parts of methacrylic acid as the main chain, PO branched. It is made of polycarboxylic acid, 2 parts of methacrylic acid, sod...

Embodiment 2

[0034] A slump-preserving dry powder mortar plasticizing enhancer is prepared from the following components in parts by weight: 8 parts of acrylamide-acrylic acid copolymer, 7 parts of styrene acetate copolymer, 20 parts of plasticizer, montmorillonite 25 parts of stone, 15 parts of glass beads, 4 parts of calcium carbonate, 5 parts of calcium aluminate, 4 parts of calcium nitrate, 3 parts of barium sulfate, 6 parts of calcium acetate, 7 parts of modified sisal fiber, 6 parts of calcium carbonate whiskers , 20 parts of potato flour, 6 parts of gelatin, 8 parts of diatomaceous earth, 5 parts of carboxymethyl cellulose ether, and 0.3 parts of silicone defoamer;

[0035] The plasticizer is composed of 3 parts of methacrylic acid as the main chain to branch the PEO branched polycarboxylic acid, 3 parts of acrylic acid as the main chain to branch the EO branched polycarboxylic acid, and 3 parts of methacrylic acid to branch the PO branch as the main chain. Polycarboxylic acid, 3 pa...

Embodiment 3

[0037]A slump-preserving dry powder mortar plasticizing enhancer is prepared from the following components in parts by weight: 6 parts of acrylamide-acrylic acid copolymer, 5 parts of styrene acetate copolymer, 15 parts of plasticizer, montmorillonite 20 parts of stone, 10 parts of glass beads, 2 parts of calcium carbonate, 3 parts of calcium aluminate, 2 parts of calcium nitrate, 1 part of barium sulfate, 4 parts of calcium acetate, 5 parts of modified sisal fiber, 4 parts of calcium carbonate whiskers , 15 parts of potato flour, 4 parts of gelatin, 6 parts of diatomaceous earth, 3 parts of carboxymethyl cellulose ether, 0.1 part of silicone defoamer;

[0038] The plasticizer is composed of 1 part of methacrylic acid as the main chain branched PEO branched polycarboxylic acid, 1 part of acrylic acid as the main chain branched EO branched polycarboxylic acid, and 1 part of methacrylic acid as the main chain branched PO branched chain. It is made of polycarboxylic acid, 1 part ...

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Abstract

The invention discloses a slump-retaining type dry powder mortar plasticization reinforcing agent prepared from the following components in parts by weight: 6-8 parts of an acrylamide-acrylic acid copolymer, 5-7 parts of a styrene acetate copolymer, 15-20 parts of a plasticizer, 20-25 parts of montmorillonite, 10-15 parts of glass micro-beads, 2-4 parts of calcium carbonate, 3-5 parts of calcium aluminate, 2-4 parts of calcium nitrate, 1-3 parts of barium sulfate, 4-6 parts of calcium acetate, 5-7 parts of a modified sisal fiber, 4-6 parts of calcium carbonate whiskers, 15-20 parts of a potato powder, 4-6 parts of gelatin, 6-8 parts of diatomite, 3-5 parts of carboxymethyl cellulose ether, and 0.1-0.3 part of an organosilicone defoaming agent. The slump-retaining type dry powder mortar plasticization reinforcing agent has the advantages of low dosage, high strength, high slump degree, stability and the like, and is a good building additive.

Description

technical field [0001] The invention relates to a slump-preserving dry powder mortar plasticizing enhancer, which belongs to the technical field of building admixtures. Background technique [0002] Dry powder mortar, also known as dry mortar powder, is a new type of dry powder or granular building material that is made of dry and sieved fine aggregates mixed with cementitious materials, admixtures, fillers, etc. in a certain proportion. It has the advantages of high product quality, high production efficiency, low production cost, convenient use, low environmental pollution, and convenient civilized construction. , and become the development direction of the construction industry. According to the composition of raw materials, dry powder mortar can be divided into ordinary cement mortar, polymer cement mortar, special functional mortar and quick repair mortar. Among them, ordinary cement mortar is the mortar with the largest amount and the widest range of use, which is co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B24/42C04B103/30
CPCC04B40/0039C04B2103/308C04B24/2652C04B24/26C04B14/104C04B14/22C04B22/10C04B22/0093C04B22/085C04B14/368C04B24/04C04B18/248C04B14/383C04B24/38C04B24/14C04B14/08C04B24/383C04B24/42C04B2103/30C04B2103/50C04B24/16C04B24/163C04B14/062
Inventor 李玲娜廖文杰陈威王恒尹丹黄煌容弟尧
Owner GUILIN HUAYUE ENVIRONMENTAL PROTECTION TECH CO LTD