The Effect of Water-Binder Ratio on the Unconfined Compression Strength of Lime Treated Expansive Soils

Abstract

This paper discusses unconfined compression strength in expansive soils using lime added as an ingredient. Soil samples were taken from one location in Manado City and tested in the laboratory to obtain soil properties values such as liquid limit, plastic limit, plasticity index, activity, and unconfined compression strength. For the water-binder ratio, three variations are used, namely 1.0, 1.2, and 1.5. From the test results obtained, expansive clay characteristics are very plastic with an enormous PI value. The addition of 200 kg of lime in 1 cubic meter of soil increased the unconfined compression strength by 95.4% to 510.3%. The highest unconfined compression test was for water binder ratio 1.2 for curing time of 14 days, 28 days, and 90 days.