EFFECT EFFECT OF FLY ASH CONTRIBUTION TO THE PHYSICAL AND MECHANICAL PROPERTIES OF CEMENTED PUMICE-BASED LIGHTWEIGHT WALL MATERIAL

In this study, using CEM I and CEM II type cements in different mixing ratios, pumice-based lightweight wall material with the contribution of fly ash (FA) was produced so as to evaluate the likely use of this waste material in the construction sector. Physical and mechanical properties were determined in the samples. This study consists of two stages. In the first stage, pumice in 0-4 mm size was used as coarse aggregate. The average axial compressive strength (ACS) values of samples obtained by using only pumice were 9.2 and 11.7 MPa for Bims Concrete 40 (BC40) and BC80 in CEM I, 5.05 and 10.6 MPa for BC40 and BC80 in CEM II, respectively. In the second stage, FAs were added (25, 50, 75 and 100% in weight) as fine aggregates. The ACS values of samples obtained by using FA additive in different ratios ranged from 4.15 to 5.2 MPa for BC40 in CEM I, 3.0 to 3.45 MPa for BC40 in CEM II, respectively, on the other hand, they ranged from 7.4 to 8.7 MPa for BC80 in CEM I, and 4.9 to 6.8 MPa for BC80 in CEM II, respectively. Turkish and European (TS-EN) standards were used to do experiments and interpret the results.