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Special interior wall painting mortar using gypsum

A mortar and gypsum technology, applied in the field of special interior wall plastering mortar, can solve the problems of poor water retention of mortar, short setting time of mortar, and difficult to control, and achieve good cohesion and workability, good physical and mechanical properties, and construction operation. long time effect

Inactive Publication Date: 2019-10-29
江苏洋河新城新材料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, a kind of plastering mortar—gypsum mortar has become a research hotspot (mainly using gypsum and expanded perlite or vitrified microbeads). The interior wall plastering mortar should have good workability and high cohesive force. The amount of cement meets the strength requirements of the mortar, the amount of fly ash or slag powder is limited, and the amount of cement is generally high, resulting in high cost of mortar
Second, the quality of mortar is prone to fluctuations. For example, the consistency of freshly mixed mortar fluctuates greatly and is difficult to control. The setting time of mortar is short, the water retention of mortar is poor, and bleeding is serious. The surface of the gray wall is prone to hollowing, cracking, etc., and the durability of the mortar is poor. Various quality problems occur in the mortar in a short period of time, which requires rework or repair of the building, which brings inconvenience and economic loss to people's lives. , in summary, the present application proposes a special interior wall plaster mortar using gypsum to solve the above-mentioned problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The mortar includes 25% cement, 10% fly ash, 10% nickel powder, 25% gypsum, 15% slag powder, 10% redispersible rubber powder, 0.2% water retaining agent, 0.1% air entraining agent, and 0.175% water reducing agent. % and polyvinyl alcohol 0.075%;

[0022] Select 0.2% of water-retaining agent, 0.1% of air-entraining agent, 0.175% of water-reducing agent and 0.075% of polyvinyl alcohol into a container and stir in one direction for 10 minutes, and stand for half an hour to obtain a water-retaining agent; the water-retaining agent obtained above, 25% of cement, 10% of fly ash, 10% of nickel powder, 25% of gypsum, 15% of slag powder, and 10% of redispersible rubber powder are poured into the mixer one by one, add water of appropriate mass, and stir in one direction In 10 minutes, a special interior wall plaster mortar using gypsum is obtained, and the mortar is painted on the wall with a trowel. After one day, the compressive strength is ≥15Mpa, and after 28 days, the compre...

Embodiment 2

[0024] The mortar includes 40% cement, 10% fly ash, 10% nickel powder, 10% gypsum, 15% slag powder, 10% redispersible rubber powder, 0.2% water retaining agent, 0.1% air entraining agent, and water reducing agent 0.175% and polyvinyl alcohol 0.075%;

[0025] Obtain the mortar according to the above method, and paint the mortar on the wall with a trowel. After one day, the compressive strength is ≥ 16.5, and after 28 days, the compressive strength is ≥ 22Mpa, reaching the standard.

Embodiment 3

[0027] The mortar includes 30% cement, 10% fly ash, 10% nickel powder, 20% gypsum, 15% slag powder, 10% redispersible rubber powder, 0.2% water retaining agent, 0.1% air entraining agent, and 0.175% water reducing agent. % and polyvinyl alcohol 0.075%;

[0028] Obtain the mortar according to the above method, paint the mortar on the wall with a trowel, and paint the mortar on the wall with a trowel. After one day, the compressive strength is ≥ 18.5Mpa, and after 28 days, the compressive strength is ≥ 24.5Mpa. meet the target.

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Abstract

The invention relates to a special interior wall painting mortar using gypsum. The mortar comprises cement, fly ash, nickel powder, gypsum, mineral slag micropowder, redispersible rubber powder and additives, wherein the additives comprise a water retaining agent, an air entraining agent, a water reducing agent and polyvinyl alcohol. The special interior wall painting mortar provided by the invention has the advantages of excellent construction performance, good physical and mechanical properties, long construction operation time, good construction effect and high construction efficiency, is simple in construction process, free of hollowing and cracking after being used and applicable to brushing leveling of all interior walls, and has good heat-preserving performance, bonding force and workability.

Description

technical field [0001] The invention relates to the field of mortar, in particular to a special interior wall plaster mortar using gypsum. Background technique [0002] Ordinary plastering mortar is the most widely used plastering mortar in construction projects. Its function is mainly to protect the wall and the ground from the erosion of wind, rain and harmful impurities, improve the performance of moisture resistance, corrosion resistance and weathering resistance, and increase durability; at the same time, it can make the surface of the building smooth, clean and beautiful. The materials used for present wall plastering mortar are materials such as yellow sand, river sand, cement, fly ash. [0003] At present, a kind of plastering mortar—gypsum mortar has become a research hotspot (mainly using gypsum and expanded perlite or vitrified microbeads). The interior wall plastering mortar should have good workability and high cohesive force. The amount of cement meets the st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14
CPCC04B28/144C04B2111/00482C04B2201/50C04B7/02C04B18/08C04B18/144C04B18/141C04B2103/0057C04B2103/465C04B2103/304C04B2103/302C04B24/2623
Inventor 赵卫星李晨曦麻晓波薛金彪朱科
Owner 江苏洋河新城新材料有限责任公司
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