Study On Improving Heat Preservation Performance Of The EPS Exterior Thermal Insulation Mortar And Crack-control Property Of Crack-control Mortar

Exterior thermal insulation composite system (ETICS) is a long-run trend of building energy saving, one important part of which is EPS exterior thermal insulation mortar (EETIM) . EETIM has good workability and is also a kind of environment protection green building material. Though it has achieved the requirements for energy saving of 50%, it hasn't achieved the further requirements for building energy saving. So energy saving performance of EETIM must be augmented that EETIM will not be eliminated by market. If there were crack and cavity in the wall, the effect of building energy-saving would be reduced sharply.In this study, the experiment research is emphasized. The mixture proportions of EETIM are adjusted, a feasible way is found to improve its effect of heat preservation, and it is sure to achieve the requirements for further energy saving; The mixture proportions of crack-control mortar are adjusted, its crack-control property will be improved, and there are sure no crack and cavity in the surface on the exterior wall.In this paper, the effect of raw & processed materials of EETIM on compressive strength, bonding strength and heat conductivity are studied, the way to improve its thermal property have been found; The effect of heat preservation was improved ; It is the effect of raw & processed materials, composite admixtures and cement-sand radio of crack-control mortar on compressive strength, softening coefficient, absorption of water, porosity, percentage of dry shrinkage, crack index and anti-crack performance that have been researched. On the base of those experiments, we have adjusted the mixture proportions of crack-control mortar, plastered over the crack-control mortar on EETIM, draw the conclusion that the crack-control property have been enhanced.