EFFECTIVENESS OF OIL-SHALE ASH IN REDUCING ALKALI-SILICA REACTION EXPANSIONS


YEGINOBALI A., SMADI M., KHEDAYWI T.

MATERIALS AND STRUCTURES, cilt.26, ss.159-166, 1993 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 26 Konu: 157
  • Basım Tarihi: 1993
  • Doi Numarası: 10.1007/bf02472933
  • Dergi Adı: MATERIALS AND STRUCTURES
  • Sayfa Sayıları: ss.159-166

Özet

The ash obtained from central Jordanian oil shales was subjected to standard tests to evaluate its effectiveness as an admixture in reducing mortar or concrete expansion due to alkali-silica reactions. According to the results obtained with Pyrex glass aggregate, the ash only partially complied with the specified requirements but still performed better than two locally available pozzolanic admixtures. The ash was also helpful in reducing the expansion of mortars containing a local chert aggregate. Considering the existence of high-alkali cements, potentially reactive aggregates and large oil shale reserves in Jordan, the findings of this study would further encourage the utilization of the oil shale ash as a pozzolanic admixture in mortar or concrete.