Laboratory study on the effects of stone factory waste on the resistance of cement or lime stabilized soil against freeze-thaw cycles

In this paper, the maximum dry density, Optimum moisture content and CBR value of stabilized soil specimens mixed with crushed stone obtained from rock factory waste have been investigated. The effects of the crushed stone waste, cement or lime contents, curing time and number of freeze-thaw cycles have been investigated. The results of standard Proctor compaction tests show that the maximum dry density has an increasing trend due to the increase in crushed stone, cement or lime content, and also the optimum moisture decreased significantly with the increase of the crushed stone content. The results of the CBR test show that the increase in processing time caused a significant increase in CBR values. Increasing the crushed stone waste in lime or cement-stabilized specimens results in an increase of CBR value. Increasing the cement or lime content increases the strength of the specimens for a given crushed stone content and curing time. Comparing the results between cement and lime-stabilized specimens shows that cement-stabilized specimens have more resistant than lime-stabilized specimens under the same condition. The results of freezing-thawing tests show that increasing the number of freeze-thaw cycles decreases the CBR value of lime or cement-stabilized specimens. The effect of the number of freeze-thaw cycles on reducing the resistance of the specimens is more significant with increasing the crushed stone content.