Development Of EPS Insulating Mortar And Project Application

Expanded polystyrene(EPS)insulating mortar is one of most applicable exterior wall exterior thermal insulating techniques in the region of hot in summer and cold in winter at present due to its advantages such as excellent thermal technical property, high durability, convenient construction and competitive performance/cost ratio. We have developed EPS insulating mortar and applied it in a lot of projects. During projects practice, some shortcomings have been explored. In order to meet the need of rapid development of energy efficiency in buildings, the preparation and properties of EPS insulating mortar are further improved and optimized.In this study, influences of various components on the properties of EPS insulating mortar were investigated to select the appropriate kind and optimal dosage of the main components and further improve its integrative performances. Selecting original expanded polystyrene as the fine aggregate,by full use of the characteristics of EPS such as high thermal insulation resistance, good alkali resistance, excellent chemical stability, hydrophobic and close pore structure, and relatively high toughness, originally vesicant EPS granule was adopted as light aggregate to prepare insulating mortar to improve its thermal technical properties. By surface modification of EPS, changing its surface from hydrophilic to hydrophobic, the technical difficulties are solved successfully including difficult wetting of inorganic boding materials on EPS surface, weak workability of the fresh mixtures, and low boding strength. This technology of surface modification with low cost establishes the basis for the application of EPS in thermal insulation and concrete on large scale.In order to improve its toughness and crack resistant, some effective measures such as fibre reinforcement and compensating shrinkage with expansion agent were employed, and the primal expansion agent and fibre length were investigated. By addition of organic silicone type waterproof admixture, the water resistant, moistureproof, climate resistant and water resistant bonding strength of EPS insulating mortar is effectively strengthened. In addition, water-retenting agents were employed to improve its workability.According the different requires of exterior wall decorative materials such as coating and tile, combine with EPS insulating mortar's eminence properties used on external thermal insulation ,two different EPS insulating mortar wall insulating constructional sestems have been established. Furthermore, their corresponding...