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A kind of high water retention mortar formula

A water retention and mortar technology, applied in the field of building materials, can solve the problems of reducing water retention and increasing the cost of the whole section, and achieve the effects of reducing bleeding, enhancing fluidity and improving water retention performance.

Active Publication Date: 2022-07-29
ANHUI JIT NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing concrete mixed mortar has the following problems: in the existing embankment and long-distance mortar transportation process, due to the strong bleeding of the mortar, the water retention of the mortar body is reduced. Slurry and water are separated, and repeated long-term mixing and stirring processes are required during the pouring process, which improves the transportation-pouring process and increases the overall cost. However, the existing technology is not easy to solve such problems. Therefore, there is an urgent need for high-security Water-based mortar formula to solve the above problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A high water-retention mortar formula, comprising the following components by weight: 105 parts of cement, 120 parts of sand, 15 parts of modified slag micropowder, 10 parts of expansion agent, 2 parts of thickener, and 25 parts of fly ash. mortar;

[0023] In the present invention, the preparation method of modified slag micropowder is:

[0024] Mix the granulated blast furnace slag, desulfurized gypsum and polyethylene glycol-starch compound uniformly in a certain proportion, and grind them to a specific surface area of ​​400-500M 2 / Kg obtained, the weight ratio of granulated blast furnace slag, desulfurized gypsum and polyethylene glycol-starch compound is 100:5~10:3~5, and the preparation method of polyethylene glycol-starch compound is as follows;

[0025] S1, adding the starch after the mechanical activation pretreatment into the polyethylene glycol aqueous solution, stirring and dispersing evenly, to obtain a starch-polyethylene glycol mixed solution;

[0026]...

Embodiment 2

[0028] A high water-retention mortar formula, comprising the following components by weight: 110 parts of cement, 130 parts of sand, 18 parts of modified slag micropowder, 11 parts of expansion agent, 2.7 parts of thickener, and 28 parts of fly ash. mortar;

[0029] In the present invention, the preparation method of modified slag micropowder is:

[0030] Mix the granulated blast furnace slag, desulfurized gypsum and polyethylene glycol-starch compound uniformly in a certain proportion, and grind them to a specific surface area of ​​400-500M 2 / Kg obtained, the weight ratio of granulated blast furnace slag, desulfurized gypsum and polyethylene glycol-starch compound is 100:5~10:3~5, and the preparation method of polyethylene glycol-starch compound is as follows;

[0031] S1, adding the starch after the mechanical activation pretreatment into the polyethylene glycol aqueous solution, stirring and dispersing evenly, to obtain a starch-polyethylene glycol mixed solution;

[003...

Embodiment 3

[0034] A high water-retention mortar formula, comprising the following components by weight: 117 parts of cement, 140 parts of sand, 20 parts of modified slag micropowder, 12 parts of expansion agent, 3 parts of thickener, and 30 parts of fly ash. mortar;

[0035] In the present invention, the preparation method of modified slag micropowder is:

[0036] Mix the granulated blast furnace slag, desulfurized gypsum and polyethylene glycol-starch compound uniformly in a certain proportion, and grind them to a specific surface area of ​​400-500M 2 / Kg obtained, the weight ratio of granulated blast furnace slag, desulfurized gypsum and polyethylene glycol-starch compound is 100:5~10:3~5, and the preparation method of polyethylene glycol-starch compound is as follows;

[0037] S1, adding the starch after the mechanical activation pretreatment into the polyethylene glycol aqueous solution, stirring and dispersing evenly, to obtain a starch-polyethylene glycol mixed solution;

[0038]...

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Abstract

The invention belongs to the technical field of building materials, in particular to a formula of high water-retention mortar. Aiming at the problem of poor water retention of the existing mortar, the following scheme is proposed, including the following components by weight: 100-117 parts of cement, 117 parts of sand ~140 parts, 15-20 parts of modified slag micropowder, 10-12 parts of expansion agent, 2-3 parts of thickener, and 25-30 parts of fly ash. The polyethylene glycol-starch compound in the present invention has excellent fluidity, and is then refined and ground by a ball mill and mixed with the subsequent fly ash. The obtained blend has significantly improved workability of concrete and reduced The bleeding water of cement improves the water retention performance of the cement mortar, reduces the stirring process of the overall filling material, and improves the strength of the mortar.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a high water-retention mortar formulation. Background technique [0002] Mortar is a bonding material used in building bricks. It is composed of a certain proportion of sand and cementing materials (cement, lime paste, clay, etc.) and water. It is also called mortar and is also used as mortar. Commonly used mortars are cement mortar, mixed mortar (or cement lime mortar), lime mortar and clay mortar. With the rapid development of the construction industry, the performance requirements of mortar are getting higher and higher. [0003] The existing concrete mixed mortar has the following problems: in the existing dam and the long-distance mortar transportation process, due to the strong bleeding of the mortar, the water retention of the mortar body is reduced. The slurry is separated from the water material. During the pouring process, it is necessary to repeat the proce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/02
CPCC04B28/02C04B2111/00017C04B14/06C04B18/08C04B18/141C04B18/064C04B24/28C04B24/38C04B24/383C04B2103/0068Y02W30/91
Inventor 田明明余斌张文俊
Owner ANHUI JIT NEW MATERIAL CO LTD