Puzolinik malzemelerin (dip külü ve zeolit) tane boyutunun harcın alkali-silika reaksiyonuna ve basınç dayanımına etkisi.

In this study, the effect of particle size of pozzolinic additives (bottom ash and zeolite) on alkali-silica reaction (ASR) and compressive strength as mechanical properties of cement based mortar was investigated. In order to obtain pozzolanic additive in different particle sizes, the bottom ash/zeolite was subjected to grinding process in 5 different times (0, 30, 60, 180 and 240 minutes) in a ball mill. Concrete mortars were prepared by using different proportions (10, 20 and 30%) of pozzolinic additive in each particle size to replace cement. Natural fine aggregate and CEM-I 42.5 type Protland cement were used in cement based mortars. The amount of expansion of each mortar bar resulting from ASR according to TS 13517 and compressive strength according to TS EN 12390-3 were determined. As a result, it was determined that zeolite was more effective than bottom ash in suppressing ASR occurring in concrete mortar and the lowest ASR expansion value was obtained by 240 minutes grounded and 10% replacement of zeolite by cement. However, when the effect of both pozzolanic additives on the compressive strength of the concrete mortar was compared, it was observed that the bottom ash additive did not have a significant effect on the compressive strength, whereas the zeolite additive reduced the compressive strength a little (10 - 29 %). [ABSTRACT FROM AUTHOR]