Low-contraction high-cementation inorganic thermal-insulation mortar

Abstract

The invention discloses low-contraction high-cementation inorganic thermal-insulation mortar. The low-contraction high-cementation inorganic thermal-insulation mortar comprises the following components in percentage by weight: 8%-28% of dead burnt magnesium oxide, 6%-19% of phosphate, 9%-32% of phosphorus slag, 5%-14% of coal ash, 30%-50% of thermal-insulation aggregate, 0.5%-2.5% of a coagulation agent, 1.0%-3.5% of an excitant, 0.3%-1.0% of rubber powder, 0.15%-0.5% of a thickener and 0.1%-0.3% of fibers. The low-contraction high-cementation inorganic thermal-insulation mortar disclosed by the invention uses the quick setting and high-early-strength characteristics of phosphate cement and the slow setting and low-early-strength characteristics of the phosphorus slag to form a special complementary gelatinization system. Not only can the amount of the phosphorus slag be obviously improved, but also the mechanics deformation properties, such as cementation and volume stability, of the thermal mortar can be obviously improved. The thermal mortar prepared by the invention has low contraction, high cementation strength, low heat conductivity coefficient, simple preparation process and very good popularization and application prospects.

Description

technical field [0001] The invention belongs to the field of energy-saving and thermal insulation materials for buildings, and in particular relates to a low-shrinkage, high-bonding inorganic thermal insulation mortar, which is specially used for thermal insulation of interior and exterior walls of buildings. Background technique [0002] Building a resource-saving society is a major strategic decision made by our country. my country is a country with a large energy consumption, and building energy consumption accounts for a large part of the country's total energy consumption. The unit building energy consumption is more than 20 times higher than that of developed countries under the same climatic conditions. It is easy to have many adverse effects on the environment. It can be seen that building energy conservation is directly related to the sustainable development of social economy. [0003] Building thermal insulation mortar reduces building energy consumption by improv...

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Problems solved by technology

[0007] It solves the problems of large drying shrinkage and low bond strength of inorganic thermal insulation mortar, and solves the existing problems of phosphate cement and phosphorus slag well. At the same time, it proposes a new method to improve the performance of phosphorus slag, laying a foundation for its large-scale application strong guarantee

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