Light-weight thermal insulation anti-crack plastering gypsum

Abstract

The invention belongs to the technical field of building materials and construction, and particularly relates to light-weight thermal insulation anti-crack plastering gypsum. The plastering gypsum comprises the following components of: in percent by weight, 15-20% of vitrified microbeads, 45-50% of gypsum, 20-25% of cement, 5-10% of fly ash, 3-5% of silica fume, 0.5% of hydroxy propyl methyl cellulose, 0.3-0.5% of polypropylene fiber, 3-5% of redispersible latex powder and 0.5-0.8% of a silicone hydrophobic agent, and water accounts for 90% of the total mass of the components. The light-weightthermal insulation anti-crack plastering gypsum has good thermal insulation heat-shielding performance and good crack resistance, and the defects of easy crack and low thermal insulation coefficientof existing plastering gypsum are overcome; meanwhile, the plastering gypsum has good constructability, water retention and a sound insulation effect, can be widely applied to inner and outer walls ofbuildings, has simple construction and a broad market application prospect, and can meet requirements of construction of a resource-friendly society in China.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a light heat-retaining and crack-resistant plastering gypsum. Background technique [0002] Plastering gypsum is a high-efficiency and energy-saving building interior wall and ceiling plastering and leveling material with gypsum as the main cementitious material. In Europe, the amount of plastering gypsum has reached 50%-70% of the total plastering volume, and a complete system has been formed in production and construction. Nearly 4 million square meters of plastering gypsum are applied to the interior walls and ceilings of buildings every year. Plastering gypsum has just started in my country, but it is developing rapidly. According to the statistics of China Building Materials Federation Ready-Mixed Mortar Branch, the amount of plastering gypsum has reached 3.5 million tons. Although the absolute amount of plastering gypsum in my country has far exceed...

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Problems solved by technology

[0004] Traditional plastering gypsum usually adds river sand as aggregate, and the mining of river sand will cut down the river bed as a whole, which may easily cause slope bank instability; the downstream water level will drop in dry season, directly affecting local agricultural production and people's drinking water

In order to reduce the mining of river sand, reduce natural disasters, and maintain ecological balance, plastering gypsum uses less or no river sand, but its mechanical properties can still meet the requirements of national standards. It is a new type of building plastering gypsum.

[0005] The original gypsum formula can no longer meet the requirements of modern buildings. Through the improvement of the original formula, the plastering gypsum has the characteristics of energy saving, heat preservation, environmental protection and low energy consumption. This is the development trend of plastering gypsum and can meet the requirements of national regulations.

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