Abstract
Clay soils are soils that have high shrinkage potential and have good carrying capacity in water unsaturated conditions but poor in water-saturated conditions. Clay soil has a low carrying capacity, so to increase the carrying capacity of the soil it needs to be stabilized by using an added material which is sand. Land used for 100% disturbed soil, 95% disturbed soil + 5% sand, 90% disturbed soil + 10% sand, 85% disturbed soil + 15% sand, with curing time 3,7,14, and 28 days. The mixture was tested using aunconfined compressive strength test instrument with SNI 03-6887-2002 method. The results of the unconfined compressive strength test showed that the increase in maximum soil strength occurred in the addition of 90% disturbed soil + 10% sand at the age of 28 days curing, which reached 1,194 kg/cm2. But the results of unconfined compressive strength increased when the mixture of 85% disturbed soil + 15% of sand reaching 1,348 kg / cm2. Based on testing that the more amount of sand is added, the higher the value of unconfined compressive strength obtained.
Highlights
Asmat Regency is located in Papua with an area of 31,983.69 km2 or 31.98% of the total area of Papua Province and is a division of Merauke Regency, the type of soil found in Asmat Regency consists of clay soil which is usually found in swampy areas and in lowland
Based on the results of the test data obtained and the graphic image shows the value of the compressive strength of undisturbed soil with a mixture of 95% soil and 5% sand at the age of 3 days is 0.531 kg/cm2, while at the age of 28 days there is an increase of 1,078 kg/cm2
Based on the results of the research and discussion above, it can be concluded that the maximum unconfined compressive strength test results occurred at 28 days of curing as follows: a
Summary
Asmat Regency is located in Papua with an area of 31,983.69 km or 31.98% of the total area of Papua Province and is a division of Merauke Regency, the type of soil found in Asmat Regency consists of clay soil which is usually found in swampy areas and in lowland. Development in Asmat Regency is carried out on swamps and lowlands so that clay soil is a problem that must be overcome. Clay soils have the property of expanding and developing several factors such as lithological variability at various scales, and cycles that vary repeatedly, on the behavior of clay [1] and have low bearing capacity. The compressive strength test of clay needs to be carried out to determine the compressive strength capacity of clay to be carried out with sand. Scientific and systematic research is needed to determine the character and proportion of each ingredient. The clay and sand materials used are local materials from several areas in Asmat Regency
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