| Soils contain different type of clay minerals, also the physico-chemical properties of stabilizers (cement, flyash, or other chemical admixtures) vary with different producers. The effectiveness of stabilization is influenced by proportions or mixes of soil-stabilizer, methods of specimen making and curing condition. Unconfined compressive strength test was used to investigate the degree of stabilization in this study. For specimens made under the same mode of compaction, the higher the dry unit weight the greater was the compressive strength. Accelerated curing temperatures also resulted in higher strength. EER, a chemical admixture, from Japan, has greater effect in enhancing the strength and accelerating the secondary reaction when used with soil-cement-flyash than with soil-cement. The optimum flyash to be added to soil-cement depends on the amounts of tricalcium silicate (C{dollar}sb3{dollar}S), dicalcium silicate (C{dollar}sb2{dollar}S) in cement and silicate (SiO{dollar}sb2{dollar}) and aluminum oxide (Al{dollar}sb2{dollar}O{dollar}sb3{dollar}) in flyash. |
