Abstract:

This study has studied the effect of the healing with cement, curtain and flying ashes on the strength and deformation properties of the curtain soils. For this purpose, the caolin-bentonite mixture is prepared by the participation of a ground cement, cranberries and flying as a puzolan to these connectors, and the samples have been detected with the resistance with the free pressure experiment after waiting for different currents, the effect of additives and currents on mechanical behavior has been studied. For the preparation of the samples, a Harvard miniature compactor was used. According to the ground that does not contain the contribution, the contribution materials and heated soils have shown a much greater behavior and their deformations at the moment of migration have been reduced. The increase in the period of curing has also led to a decrease in the level of deformation. The sample containing 6% cranberry-3% flying ashes has given the highest strength. According to non-added examples, the resistance increased 6.6 times at the end of 180 days. It has been shown that the contribution of cement-flying sand can create an alternative with a high strength and lower cost that can replace the cement.

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Abstract:

The present study examines the strength and deformation properties of clay soils stabilized with cement, fly ash and lime. For this reason, clay soil that consisted of kaolin and bentonite was constituted and this soil was admixed with cement and lime. Also, fly ash was used as a pozzolan with these additives. Different curing periods were applied and unconfined compressive testing was performed to investigate the effects of additives and curing times on the mechanical behavior of clay soils. Harvard miniature compactor was used to prepare the specimens. The treated specimens showed a brittle behavior compared to the untreated soil specimens and the deformations were much smaller. Deformations were also decreased due to the increment of curing times. Highest unconfined compressive strength was achieved in specimens with 6% lime-3% fly ash combination. The compressive strength of treated specimens were 6.6 times greater than the compressive strength of untreated specimens at the end of 180 days. Therefore, lime-fly ash additive was able to replace cement additive for stabilization of specimens from the point of mechanical and economical view.