Developing And Research On The Properties Of Inorganic Thermal Insulation Mortars

The thermal insulation mortars were developed according to the demands of the Design Code of Resident Building Energy Efficiency in Hunan Province.The properties of the thermal insulation mortar were analysed theory. The data of thermal conductive coefficience was determined by analysing the thermal properties of the mortars. The data of thermal conductive coefficienceof the masonry thermal insulation mortar is 0.30W/(m·K). The data of thermal conductive coefficience of the plasters are 0.0705W/(m·K) for the high strength type thermal insulation plaster and 0.085W/(m·K) for the low trength type thermal insulation plaster respectively.The influence of the constitutes on the properties of the mortars were investigated. The constitutes are cement, air-entrained agents, fly ashes, re-dispersion polymer powders and thermal insulation aggregates. The thermal insulation properties of the wall which constituted by the thermal insulation mortars and the thermal insulation blocks were tested.The results showed that the there are obviously relationship between the thermal conductive coefficience and the dry weight of the thermal insulation mortars. Following is the formal:λ= - 0.068 + 4.138 E- 4ρ.300kg/m3 is enough to the contents of the cement for the mortars whose strength can be M10.The air-entrained agents can be absorbed by fly ashes and re-dispersion polymer powders.It is a good way to mix the different thermal insulation aggregates to decrease the thermal conductive coefficience.The thermal insulation masonry mortars and plasters were developed according to the reseach above. The research results showed that: the thermal insulation masonry mortars can be developed by using 400 kg/m3 cementitiues materials and expanded clay sand with the density 700 kg/m3. Mixing light-weight aggregates of perlite and expanded clay sand can develop suitable thermal insulation masonry mortars. Expanded and Vitrified Small Balls is a good light-weight aggregate which can develop suitable thermal insulation mortars and decrease the water absorbsion. Re-dispersion polymer powder can increase the adhesive strength and decrease the thermal conductive coefficience for the thermal insulation mortars.The compressive strength of the thermal insulation can inceased while no change happened with its density and thermal conductive coefficience by higher compressive strength of the cement. Fly ash can decrease the density and increase the thermal conductive coefficience for the thermal insulation mortars. High strength cement should be used for the thermal insulation plaster.The heat transfer coeffience of the masonry which was constructed by masonry thermal insulation mortar and thermal insulation plater, as well as the expanded clay particles hollow blocks is 0.94W/(m2·K), lower 28% than the normal mortar.