STRENGTH AND SHRINKAGE OF NATURAL POZZOLANIC MORTAR IN HOT WEATHER

To minimize durability problems encountered with ordinary portland cement in the Arabian Gulf, natural pozzolans (NP) were introduced as partial cement replacement. NP addition, however, affects concrete drying shrinkage and leads to a slower strength development, which makes a longer curing time necessary. The study compares the strength and drying shrinkage of NP mortar cured under hot weather Arabian Gulf conditions and under normal conditions. The effect of various NP replacement was also evaluated. It was found that partial ordinary portland cement replacement by NP may be considered beneficial under normal curing conditions 20-25 deg C and high r.h. However, it is not considered advantageous under hot-weather conditons when both strength and shrinkage behavior of mortar are concerned. These and other study findings are discussed.

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  • Accession Number: 00621902
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 31 1992 12:00AM