Abstract
This study investigated stabilization effects for clay and sandy soils using two types of lime-flyash mixtures as stabilizing reagents. The results are summarized as follows.
1) Flyash containing small amounts of gypsum and lime could be used as a soil-stabilizing reagent without any further addition of lime. 2) Small amounts of alkali in the flyash were found to stimulate the occurrence of pozzolanic reactions. 3) Ettringite, which formed during the curing process, helped to strengthen treated soils. 4) The increase in strength for kaolinite was considerably greater than other clay mineral specimens. 5) Among the sandy specimens, weathered samples containing larger amounts of clay showed a greater increase in strength. 6) Stabilization effects could be estimated from the ignition loss of clay minerals. Furthermore, it was discovered that there was a relationship between strength and ignition loss values of 110°C-200°C.
