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Öğe Investigation of the thermal performance of high insulation building materials by using light-weight aggregates(Dicle University, 2016) Oktay, Hasan; Argunhan, Zeki; Doğmuş, RecepPerlite is one of the most important mineral resources in Turkey where a large part of world reserves was estimated to be found in. Perlite is a siliceous volcanic glass that provides heat insulation. When it is expanded, it's volume increases about 30 times of the original volume. Despite the fact that Perlite is used in different areas, the most common usage is seen in the construction sector. In this context, experimental investigations are performed for obtaining new concrete types with relatively high strength and good thermal properties for energy efficient buildings. For this purpose, 6 sets and different types of concrete samples were prepared with a constant water-cement ratio, and normal aggregates replaced by expanded perlite aggregates at different volume fractions such as 10%, 20%, 30%, 40%, 50% and 60% of the total aggregate volume. Mechanical tests were all conducted and the hot disk method was used to find thermal conductivity values of concrete samples. As a result of experimental study, it was found out that the reductions in thermal conductivity of the produced samples reached to 75%. As a result, with suitable ratio usage of expanded perlite aggregate was understood to be effective on the mechanical properties and thermal conductivity of perlite aggregated light weight concrete and the relations between the mechanical and thermal properties were determined.
