Composite dry-mixed mortar admixture and preparation method thereof

A dry-mixed mortar and admixture technology, applied in the field of building materials, can solve problems such as bleeding, short setting time, and insufficient compressive strength, and achieve good compatibility, prolong setting time, and precisely control the effect of operating time

Inactive Publication Date: 2020-11-17
CHONGQING JURONG CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a composite dry-mixed mortar admixture, which can solve the problems of dry-mixed mortar mixture bleeding, too short setting time, and insufficient compressive strength after the existing dry-mixed mortar admixture is added

Method used

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  • Composite dry-mixed mortar admixture and preparation method thereof
  • Composite dry-mixed mortar admixture and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A composite dry-mixed mortar admixture, consisting of the following components in parts by weight: 100 parts of polyethylene oxide, 180 parts of redispersible latex powder, 13 parts of whiskers, 45 parts of lignosulfonate, dodecane 1 part of sodium sulfate, 10 parts of sodium hexametaphosphate, 8 parts of hydroxyethylene diphosphonic acid, 117 parts of limestone powder, and the above components are prepared according to the following steps:

[0022] Step 1. Weigh 13 parts of whiskers and 117 parts of limestone powder respectively, and put them into a gravity-free mixer to stir until they are evenly mixed;

[0023] Step 2. Weigh 100 parts of polyethylene oxide, 180 parts of redispersible latex powder, 1 part of sodium lauryl sulfate, 10 parts of sodium hexametaphosphate, and 8 parts of hydroxyethylene diphosphonic acid , put into the gravity-free mixer one after another, and stir with the existing mixture until the mixture is uniform;

[0024] Step 3. Weigh 45 parts of ...

Embodiment 2

[0026] A composite dry-mixed mortar admixture and a preparation method thereof, comprising the following components in parts by weight: 100 parts of polyethylene oxide, 220 parts of redispersible latex powder, 15 parts of whiskers, and 55 parts of lignosulfonate , 2 parts of sodium lauryl sulfate, 15 parts of sodium hexametaphosphate, 10 parts of hydroxyethylene diphosphonic acid, 122 parts of limestone powder, and the above components are prepared according to the following steps:

[0027] Step 1. Weigh 15 parts of whiskers and 122 parts of limestone powder respectively, and put them into a gravity-free mixer to stir until they are evenly mixed;

[0028] Step 2, weigh 100 parts of polyethylene oxide, 220 parts of redispersible latex powder, 2 parts of sodium lauryl sulfate, 15 parts of sodium hexametaphosphate, and 10 parts of hydroxyethylene diphosphonic acid , put into the gravity-free mixer one after another, and stir with the existing mixture until the mixture is uniform;...

Embodiment 3

[0031] A composite dry-mixed mortar admixture, consisting of the following components in parts by weight: 100 parts of polyethylene oxide, 200 parts of redispersible latex powder, 14 parts of whiskers, 50 parts of lignosulfonate, dodecane 2 parts of sodium sulfate, 13 parts of sodium hexametaphosphate, 9 parts of hydroxyethylene diphosphonic acid, 120 parts of limestone powder, and the above components are prepared according to the following steps:

[0032] Step 1. Weigh 14 parts of whiskers and 120 parts of limestone powder respectively, and put them into a gravity-free mixer to stir until they are evenly mixed;

[0033] Step 2. Weigh 100 parts of polyethylene oxide, 200 parts of redispersible latex powder, 2 parts of sodium lauryl sulfate, 13 parts of sodium hexametaphosphate, and 9 parts of hydroxyethylene diphosphonic acid , put into the gravity-free mixer one after another, and stir with the existing mixture until the mixture is uniform;

[0034] Step 3. Weigh 50 parts o...

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Abstract

The invention relates to a composite dry-mixed mortar admixture, which comprises the following components in parts by weight: 100 parts of a flocculating agent, 180-220 parts of redispersible latex powder, 13-15 parts of whiskers, 45-55 parts of a water reducing agent, 1-2 parts of an air entraining agent, 10-15 parts of sodium hexametaphosphate, 8-10 parts of hydroxyethylidene diphosphonic acid,and 117-122 parts of a carrier. The invention also relates to a preparation method of the composite dry-mixed mortar admixture. The whiskers in the composite dry-mixed mortar admixture are helpful forimproving the sagging resistance of a dry-mixed mortar mixture and improving the tensile bonding strength of hardened plastering mortar; besides, the hydroxyethylidene diphosphonic acid has the effects of thickening, water retention and the like, and the phenomena of layering and bleeding of a dry-mixed mortar mixture can be effectively avoided; in addition, the sodium hexametaphosphate has better compatibility with a dry-mixed mortar cement system, and the setting time of a mortar mixture can be effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a composite dry-mixed mortar admixture and a preparation method thereof. Background technique [0002] Ready-mixed mortar is a new type of building material developed with the advancement of science and technology in the construction industry and the requirements of civilized construction in recent years. It has the advantages of high product quality, complete variety, high production efficiency, convenient use, little environmental pollution, and convenient civilized construction. , in line with my country's current development direction of vigorously promoting the modernization of the construction industry. Promoting the use of ready-mixed mortar is conducive to the promotion of the use of bulk cement, and a large amount of industrial by-products such as fly ash and slag can be used. It is an important technology to ensure the quality of construction proje...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/32C04B14/38C04B22/16C04B24/00
CPCC04B14/383C04B22/16C04B24/003C04B40/0039C04B24/32C04B2103/0057C04B24/18C04B24/16C04B22/10
Inventor 陈忠伟
Owner CHONGQING JURONG CONSTR GRP
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