Pengaruh Peningkatan Nilai CBR dengan Penambahan Abu Batu untuk Jalan Hauling
Keywords:
CBR, Stone Ash, Clay, Hauling RoadAbstract
Soil is an essential element in road construction, including hauling road used to transport heavy loads in mining and industrial areas. However, not all soils have suitable physical properties. Clay soil with high water content is often soft, unstable, and easily deformed under pressure, which reduces the quality and durability of the road. One method to improve this condition is by adding stone ash. Stone ash is a waste product from crushing large rocks with a mechanical stone crusher and has potential for reuse in soil works. This study investigates how the addition of stone ash influences the California Bearing Ratio (CBR) value of clay soil, making it more suitable for hauling road. Tests were carried out in the laboratory using the unsoaked CBR method. Mixtures contained 10%, 20%, 30%, and 40% stone ash by dry soil weight. Preliminary tests such as water content, unit weight, specific gravity, Atterberg limits, and sieve analysis were conducted to determine soil properties. The natural soil had a CBR value of 1.27%. After adding stone ash, the values increased to 1.78% at 10%, 2.29% at 20% and 30%, and 4.07% at 40%. The highest value at 40% indicated denser soil capable of carrying heavier loads. Thus, stone ash can be used as an alternative material for clay soil improvement while supporting sustainable waste utilizationReferences
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