Research On Performance Optimization And Spraying Type Construction Technology Of Glazed Hollow Beads Thermal Insulation Mortar

Along with the development of the energy conservation technique in building in China, there displays a huge developing potential for the inorganic thermal insulation materials which is possessed with characteristics of safety, environmental protection, resistance and high performance. As a new type of the inorganic thermal insulation material, there is a big application of Glazed Hollow Beads thermal insulation mortar in the inside and outside of the protective structure. Though, it is extremely urgent for the deep research on thermal insulation system of Glazed Hollow Beads thermal insulation mortar. The paper is an aspect of the researching work of the group, and the performance optimization and constructional technique of the thermal insulation mortar is studied in the paper. Because of big differences of the performance of Glazed Hollow Beads thermal insulation mortar that are dispensed with different formula, the paper analyzes effects of varying factors through the orthogonal test. On basis of the above research, micromechanisim analysis of varying factors are studied and the optimum mixed proportion of Glazed Hollow Beads thermal insulation mortar is obtained in the paper. Expect for that, in order to improve the construction rate of Glazed Hollow Beads thermal insulation mortar, the spraying type equipment and technique are studied in the paper.Here are main researching contents:Firstly, orthogonal tests of varying materials of Glazed Hollow Beads thermal insulation mortar are proceeded, and effects of bulk density and adding quantity of Glazed Hollow Beads, cement quantity, ime consumption and additive type and adding quantity on compressive strength and thermal insulation performance are proceeded in the paper. The result shows that adding quantity of Glazed Hollow Beads and cement are main factors, and it should put the consideration on above factors while defining the optimum mixed proportion. With change adding quantity of G.H.B. and cement, thermal insulation performance and compressive strength varies oppositely, and the optimum mixed proportion can not get under the only orthogonal test.Secondly, on basis of the only orthogonal test, combining vaiying trend of varying factors, micromechanisim analysis of materials are accomplished, and the definition of the theory optimum mixed proportion is obtained; For the verification of the rationality of the theory optimum mix proportion, performance tests are proceeded, results shows that thermal conductivity is 0.054W/(m·K) and compressive strength is 0.48MPa.Thirdly, the paper selects the improvement of the construction rate of Glazed Hollow Beads thermal insulation mortar as the aim, and researched the spraying type equipment and technique, and analyzes the cost of different constructions. The analysis shows that constructional time of the mechanical spraying construction is 1/4 of the smearing construction, and economize direct labor cost is 210 RMBs, and construction quality is under a great control, as wall smear with extensive area. Otherwise, as a result of the main effect of the interface mortar and the crack-resistance mortar on thermal insulation system performance, the mechanism and construction method of the interface mortar and the crack-resistance mortar in Glazed Hollow Beads thermal insulation system are researched in the paper.There is a wish that through test research and theory analysis, the mechanism and rule of varying performance of thermal insulation system could be revealed, and providing the evidence for the optimization and selection of thermal insulation system, and presenting basic data for the edition of national standards.