A kind of exterior wall color heat insulation mortar with heat reflection function

Abstract

The invention provides a color thermal insulation mortar with a heat reflection function for an exterior wall. The color thermal insulation mortar comprises the following components by weight percent: 20-25% of white cement, 4-6% of early strength agent, 2-4% of active admixture, 10-20% of finer filler, 20-40% of light filling, 10-30% of fine sand, 1-3% of pigment and 4-6% of additive, wherein the early strength agent is white amorphous calcium aluminate of which the specific surface area is greater than or equal to 5,000m<2>kg; the light filling is a glass bead, which has a honeycomb mesh structure and of which the particle size is 0.09-0.60mm, the bulk density is 270-400Kg / m<3>, the cylinder compressive strength is greater than 2.0MPa, and the pigment is chromium titanium yellow, nickel titanate yellow, chromite-cobalt blue or ferrochromium black. The color thermal insulation mortar disclosed by the invention not only has the characteristics of being light in weight, strong in strength and low in water absorption rate by adding an inorganic composite pigment burnt at high temperature and the glass bead with a special structure, but also has high near infrared solar reflectance and low coefficient of thermal conductivity. Compared with the common mortar, the color thermal insulation mortar has better insulating and cooling effects, and is especially applicable to decoration of the exterior wall.

Description

technical field [0001] The invention relates to a construction mortar, in particular to a colored mortar for decorating the surface of an exterior wall, and more particularly to a colored heat-insulating mortar for an exterior wall with heat reflection function. Background technique [0002] Traditional construction mortar is usually used as bonding and caulking materials, but less used as decorative materials. The reason is that traditional construction mortar is mainly composed of a large amount of sand particles added to cement-based materials, and the particle size of sand particles is generally large. , does not conform to the delicate decoration style that is customary in our country; in addition, without adding pigments, the color of the mortar is monotonous, mainly gray or off-white, which cannot meet the requirements of diversified decoration. In recent years, by adjusting the grit gradation of the mortar, adding pigments and functional additives, there have been co...

AI Technical Summary

Problems solved by technology

In summer, the sun directly shines on the surface of the mortar in southern my country, and the temperature can reach above 70°C. If the thermal conductivity of the colored mortar is poor, and when selecting pigments, only its influence on tinting strength, strength and other factors should be considered, and its influence on sunlight will not be considered. Reflection and absorption will greatly affect the heat insulation and cooling effect of the wall

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