The usage on the basaltic pumices as concrete agregate

The intereactions on concrete by means of the unit weight, strength, sound and thermal conductivity were investigated in this study, by using mixture of different proportions of aggregate (basic pumice, sand), fly ash, and chemical additives. It is understood that the basic pumice is not suitable alone to be used as aggregate in concrete. Hence different proportions of alluvial sand was also used beside the basic pumice and flay ash. By evaluating various concrete mixture designs, design of T5 made by 350 kg of cement, 200 kg of fly ash, 143 kg of water and 1,8 percent of addivite according to the cement amount was found more suitable concrete mixture presenting the unit weight of 1916 kg/m³, uniaxial strength of 276 kgf/cm², thermel and sound conductivity of 0,35 kcal/m²hºC and22 Db, respectively.