Thermal performance of mortars/concretes containing calcined marl as alternative pozzolan

Abstract

The solutions to the increasing problem in the energy demand of the world has been expected from the building sector with consumption of high amount of energy. Producing environmentally friendly and energy efficient blended cements and using materials with high thermal performance in terms of insulation and thermal energy storage in buildings are some of these solutions. Calcined marl at optimum temperature is an alternative pozzolan for blended cement productions. The main purpose of this study is to determine of how the thermal performance and mechanical properties of mortar/concrete will be affected by using calcined marl as alternative pozzolan. For this purpose, the mortars/concretes containing calcined marl blended cements were produced. The calcined marl replacement ratios of blended cements were 0, 10, 30 and 50 wt.%. In the study, the strengths and thermal performances of mortars/concretes containing calcined marl blended cements were determined. The test results were compared among themselves and with each other. According to the test results, it was concluded that thermal performances of the mortars/concretes containing calcined marl blended cements could be improved up to 50% replacement ratio without compromising the strength of considered materials.