Hydrophobic thermal insulation and anti-cracking mortar for external wall and method for preparing same

Abstract

The invention discloses a hydrophobic outer wall heat-preservation anti-cracking mortar and a method for making the same. The mortar takes cement and fine sand as base materials, and is formed through adding in hydrophobic active chemical substances, i.e. a water retention agent and corresponding agglomerant, an expansion agent and fiber; the waterproof function of the mortar is that the hydrophobic active chemical substances can be absorbed on the inner surface of the pore of cement mortar so as to form a hydrophobic surface film, thereby preventing outside moisture from infiltrating into the mortar and reaching the action of water proofing and leakage resistance. The hydrophobic outer wall heat-preservation anti-cracking mortar has the advantages of water proofing, cracking prevention, leakage resistance, heat preservation, heat insulation, excellent bonding property, high strength, low degree of shrinkage, low coefficient of thermal conductivity, ideal workability and application property and low fold ratio, and is a novel heat-preservation heat-insulation material. The heat-preservation heat-insulation building built by the mortar is not cold in winter and not hot in summer indoors, thereby greatly improving dwelling environment and saving energy resources; moreover, all indexes and particularly the hydrophobic index of the mortar are up to advanced domestic level, and have remarkable social benefit and economic benefit.

Description

technical field [0001] The invention relates to building materials, in particular to a hydrophobic external wall thermal insulation and anti-cracking mortar and a preparation method thereof. Background technique [0002] At present, my country's building energy consumption has accounted for 27% of the country's total energy consumption, and with the continuous development of the economy and the continuous improvement of people's living standards, the proportion of building energy consumption will further increase. Reach 40% of the total energy consumption of the whole society. However, the people have higher and higher requirements for modern houses, such as the comfort, environmental protection, and energy saving of houses, and require heat preservation, heat insulation, sound insulation, waterproof and seepage prevention. [0003] For many years, my country has been using ordinary cement mortar as the material for exterior wall or roof waterproofing and heat preservation. ...

AI Technical Summary

Problems solved by technology

[0003] For many years, my country has been using ordinary cement mortar as the material for exterior wall or roof waterproofing and heat preservation. Although this material has the advantage of being easy to pick up, it has a high thermal conductivity and poor waterproof and heat insulation effects. The temperature difference between indoor and outdoor wastes a lot of precious energy

For this reason, the State Intellectual Property Office published an invention patent titled "New Inorganic Thermal Insulation Mortar" (patent application number 200510029673.0) on March 21, 2007, which consists of cement, natural lightweight aggregate and polymer Composition, it can overcome the disadvantages of existing building wall insulation systems and construction methods such as unenvironmental protection and complicated construction, reduce manufacturing and use costs, and be conducive to environmental protection, but it also has no heat insulation, no sound insulation, Disadvantages of not waterproof and seepage proof