An experimental investigation on the improvement with fly ash substitute of lightweight concrete properties produced using pumice aggregate

In this thesis; As a result of the use of fly ash which is industrial waste in different ratios (1%, 3% and 5%) as cement substitute material, lightweight concrete production is aimed. It is aimed to obtain the physical and mechanical properties of the produced samples are superior properties, high compressive strength and lightweight building material according to light concrete. In light concrete production was used as aggregate acidic pumice of Nevsehir region. The physical and mechanical properties of this lightweight concrete were investigated and microstructural analysis was performed. For the determination of physical differences, dry unit volume weight, capillary water absorption, porosity, composite and freeze thaw tests were performed. For the determination of mechanical properties, tensile splitting strength and compressive strength tests were applied. SEM images were interpreted to examine the structural differences in the material. In the result of study; the increase in the amount of fly ash was found to improve the physical and mechanical properties of the sample. The best result was obtained from 5% fly ash substitute samples. The use in a large sector such as construction of industrial wastes which adversely affects the ecological balance will be an opportunity to eliminate wastes. Key Words: Light concrete, fly ash, pumice, SEM, physical and mechanical properties. 2020, 66 pages Science Code: 91