Abstract
The compressive strength of lightweight concrete using palm kernel shell (pks) and periwinkle shell (pws) is reported. The strength as a function of aggregates ,age, and density were investigated. The strengths were measured at interval of 7-day for 28 days. The strengths obtained were in the range of those reported in the standards for lightweight concretes. The densities were also observed to increase with age and fall within the range of those reported in the literature. The results for the compressive strength showed that the strength increases with age for both aggregates.
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