Energy-saving heat-insulating masonry mortar and method for making same

Abstract

The present invention relates to an energy-saving and heat-preservation masonry mortar. The component materials and the weight ratio for the masonry mortar are that: 17-23 percent of cement, 15-55 percent of powder coal ash, 10-55 percent of hearth residue, 0-25 percent of glass micro pearl, 0.7-1.2 percent of additive agent and 0.05-0.10 percent of natrium water reducing agent. The mixture material after being mixed is added into a mixer and then is mixed for 3-4 minutes for well-proportioned matching. And then the clear water with the thickness for mortar 70-90mm is added and is mixed for 3-5 minutes. So the finished products can be obtained. The present invention has the advantages that: if being used together with the energy-saving and heat-preservation brick or the heat-preservation and light brick, the present invention can overcome the problem that when using the common masonry mortar, the heat conductivity coefficients in both materials are much more different, so the whole brick body will be in cold bridge effect. The present invention accords to the requirements of heat insulation and heat preservation for the energy-saving building materials. The present invention is with much better workability and construction performance, much better heat-working performance, much higher intension and much lower cost. So the present invention can be widely applied and popularized.

Description

technical field [0001] The invention belongs to the field of building materials, and relates to an energy-saving and heat-retaining masonry mortar used for light-weight heat-retaining blocks or heat-retaining bricks of walls and a preparation method. Background technique [0002] With the continuous improvement of environmental protection and energy conservation requirements, the energy-saving and thermal insulation technology of building envelope has become one of the important building energy-saving technical approaches in our country. New energy-saving and waste-reducing thermal insulation wall materials have achieved rapid development. New energy-saving wall materials such as lightweight thermal insulation blocks or porous thermal insulation bricks have been more and more widely used in various non-load-bearing and load-bearing walls. However, at present, most of the light-weight thermal insulation wall blocks are built with ordinary masonry mortar in the market, and ord...

AI Technical Summary

Problems solved by technology

[0004] Ceramsite lightweight aggregate thermal insulation mortar, due to the rough and porous surface of ceramsite and large water absorption, the freshly mixed ceramsite mortar has poor workability and is not easy to meet construction requirements; expanded perlite and polystyrene particle lightweight aggregate thermal insulation mortar has high water absorption and is easy to powder In the process of slurry construction, the volume loss rate is high, which is easy to cause low strength and hollowing cracks in the later stage of the product, and the organic material of polyphenylene particles is flammable, has poor fire resistance, produces harmful gases at high temperatures, and is resistant to aging, low weather resistance, and easy to mix. poor sex

In addition, the thermal conductivity of ceramsite and expanded perlite lightweight aggregate insulation mortar is above 0.4W / (m K), although the thermal conductivity of polystyrene particle lightweight aggregate insulation mortar is lower than 0.25W / (m K), But its strength is low, generally at 3MPa