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This research aims to study the prototype of the production process, physical and mechanical properties testing and the thermal conductivity of the building wall system with insulation properties made from rubber wood chips, rubber leaves and rubber latex by low cost machines. Then this research will be used to transfer production technology to establishment. When it is assembled into a building wall system with the size 30 cm x 30 cm x 15 cm, the testing result showed that the general properties achieved as per regulations with sharp edges, not chipping, not flipping perpendicular, and dimensional tolerance not more than ±2 mm with compressive strength of 2.54 MPa as the TIS.58-2533 standard requirements. The coefficient of thermal conductivity is 0.138 W/m-Kelvin degree. Therefore, it can be a good heat insulator. The results from this research can be applied to the construction concerned with building wall.
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