The usage of acidic pumices as light concrete gregate which was seen around nevsehir

The interactions on concrete by means of the unit weight, strength, sound andthermal conductivity were investigated in this study, by using mixture of differentproportions of aggregates (acidic pumice, sand), fly ash, and chemical additives. Asthe acidic pumice alone did not satisfy the aggregate requirements of the concretedifferent proportions of alluvial sand was also used beside the acidic pumice and flayash. By evaluating various concrete mixture designs, the best design was made bymixture of 60 % of acidic pumice and 40 % of sand, 400 kg of cement, 200kg of flyash, 96 kg of water and 1.5 % of additive according to the cement amount was foundmore suitable concrete mixture by means of the unit weight (1700 kg/m3), uniaxialstrength (310 kgf/cm2), thermal (0.48 kcal/m2hºC) and sound isolation (20,17 dB).