Slaking evaluation of clayey admixtures for suitability of their stabilization by cement

Several certain minimum requirements must be satisfied in order to classify soils adequately. For example if soil and its potential uses are considered such factors as unconfined compressive strength, durability, grain size and liquid limit should be considered. For this reason, the Atterberg limits, the unconfined compressive strength and the durability were used as criteria-indices of soil improvement by cement. The best achieved unconfined compressive strength and durability (in soil-cement mixtures) are related to quality of soils (Atterberg limits) and the percentages of cement. According to literature clayey soils with LL less than or equal to 40% are suitable for successful stabilization (material loss 7% - 14% in 12 cycles of Freezing and Thawing or Wetting and Drying). These soils develop satisfactory values of unconfined compressive strength, by using small amounts of cement. Combination, of relationships developed between slaking and liquid limit as well as slaking and unconfined compressive strength, gives information on quality of cement stabilization and the percentages of cement used in clayey admixtures for stabilization.