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Light leveling dry-mixed mortar

A technology of leveling dry powder and mortar, which is applied in the field of lightweight leveling dry powder mortar, which can solve the problems of low construction efficiency, unfavorable health of on-site construction personnel, and influence on the service life of buildings, so as to reduce construction labor intensity and achieve good leveling performance in thick layers. Conducive to the effect of resource utilization

Inactive Publication Date: 2017-08-11
关建光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional wall and ceiling leveling materials mainly include cement mortar leveling. The leveling material has high leveling thickness and high density, which leads to excessive load on the floor per unit area and affects the service life of the building. In addition, the traditional leveling construction efficiency is low and labor needs Big, need watering maintenance and other issues in the later stage
In addition, most of the traditional leveling construction needs to be pre-mixed on site, which produces more dust, pollutes the environment, and is not conducive to the health of construction workers on site
In addition, the ordinary cement mortar used in the plastering and leveling of various walls and ceilings in the room has poor sound insulation effect, cannot be leveled in thick layers, and is prone to defects such as cracking, hollowing, and falling off.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Desulfurized gypsum 60%

[0043] Fly Ash 10%

[0044] Ground calcium carbonate 20%

[0045] Cement 5%

[0046] Sand 2%

[0047] Lightweight aggregate 1%

[0048] Starch ether 0.1%

[0049] Magnesium Aluminum Silicate 0.5%

[0050] Redispersible latex powder 0.3%

[0051] Cellulose ether 0.2%

[0052] Retarder 0.1%

[0053] Water reducer 0.8%;

[0054] Redispersible latex powder is vinyl acetate;

[0055] The viscosity of cellulose ether is 70000cps;

[0056] The retarder is citric acid.

[0057] Mix and stir for 10 minutes according to the ratio of light leveling dry powder mortar and water 2:1 (weight ratio), spread it on the wall and ceiling, and then scrape and compact it.

[0058] In this example, the lightweight leveling mortar has good cohesiveness and high resistance to deformation. According to the test method of "Test Methods for Physical Properties of Dry-Mixed Mortar" GB / T 29756-2013, the compressive strength is greater than 4.1Mpa. The bonding...

Embodiment 2

[0061] Desulfurization gypsum 70%

[0062] Fly Ash 2%

[0063] Ground calcium carbonate 20%

[0064] Cement 2%

[0065] Sand 2%

[0066] Lightweight aggregate 1%

[0067] Starch ether 0.1%

[0068] Magnesium Aluminum Silicate 0.5%

[0069] Redispersible latex powder 1%

[0070] Cellulose ether 0.5%

[0071] Retarder 0.15%

[0072] Water reducer 0.75%;

[0073] Redispersible latex powder is acrylate;

[0074] The viscosity of cellulose ether is 150000cps;

[0075] The retarder is tartaric acid.

[0076] Mix and stir for 15 minutes according to the ratio of light leveling dry powder mortar and water 1.5:1 (weight ratio), spread it on the wall and ceiling, and then scrape and compact it.

[0077] In this example, the lightweight leveling mortar has good cohesiveness and high resistance to deformation. According to the test method of "Test Method for Physical Properties of Dry-Mixed Mortar" GB / T 29756-2013, the compressive strength is greater than 4.3Mpa. The bondin...

Embodiment 3

[0080] Desulfurized gypsum 65%

[0081] Fly Ash 5%

[0082] Ground calcium carbonate 20%

[0083] Cement 2%

[0084] Sand 2%

[0085] Lightweight aggregate 1%

[0086] Starch ether 0.1%

[0087] Magnesium Aluminum Silicate 0.5%

[0088] Redispersible latex powder 1%

[0089] Cellulose ether 0.5%

[0090] Retarder 0.1%

[0091] Water reducer 0.8%

[0092] Gray cement PO52.5 2%;

[0093] The redispersible latex powder is a 1:1 mixture of vinyl acetate and acrylate by weight;

[0094] The viscosity of cellulose ether is 120000cps;

[0095] The retarder is sodium citrate.

[0096] The lightweight aggregates are fly ash floating beads, vitrified beads, expanded perlite, polystyrene particles, etc.

[0097] Mix and stir for 15 minutes according to the ratio of light leveling dry powder mortar and water 1.5:1 (weight ratio), spread it on the wall and ceiling, and then scrape and compact it.

[0098] In this example, the lightweight leveling mortar has good cohesiveness ...

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Abstract

The invention discloses light leveling dry-mixed mortar which comprises, by weight percentage, 20-80% of desulfurized gypsum, 0-20% of fly ash, 20-80% of calcium carbonate, 0-20% of cement, 0-30% of sand, 1-12% of lightweight aggregate, 0-0.1% of starch ether, 0-0.5% of magnesium aluminosilicate, 0-3% of redispersible latex powder, 0.1-0.5% of cellulose ether, 0.02-0.15 part of retarder and 0-0.8 part of water reducing agent. The light leveling dry-mixed mortar has the advantages of not cracking, being firmly bonded to a base material, regulating air humidity, having an excellent sound insulation function, being green and environmentally friendly, saving energy and being safe and the like, and conforms to application requirements in modern construction engineering.

Description

technical field [0001] The invention relates to the technical field of building materials and building construction, in particular to a lightweight leveling dry powder mortar. Background technique [0002] With the rapid development of the construction industry, the demand for wall and ceiling leveling materials is increasing. In addition, the decoration of walls and ceilings is becoming more and more diversified and refined. Therefore, leveling materials for walls and ceilings are attracting more and more attention from consumers. The traditional wall and ceiling leveling materials mainly include cement mortar leveling. The leveling material has high leveling thickness and high density, which leads to excessive load on the floor per unit area and affects the service life of the building. In addition, the traditional leveling construction efficiency is low and labor needs It is large, and it needs watering and maintenance in the later stage. In addition, most of the tradit...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B111/62
CPCC04B28/144C04B2111/62C04B18/08C04B14/28C04B7/02C04B14/06C04B24/38C04B22/00C04B2103/0057C04B24/383C04B2103/22C04B2103/302
Inventor 关建光
Owner 关建光
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