1. Effect of addition of stone ash and sand on laboratory CBR value on soft soil stabilization.
- Author
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Juliana, Nova and Bawadi, Nor Faizah Binti
- Subjects
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BEARING capacity of soils , *SOIL stabilization , *ROAD construction , *POTTING soils , *STONE industry - Abstract
The existence of soft soil is very much in Indonesia, especially in areas around the coast. This condition, of course, becomes a problem if road construction is to be built. Stone ash production in Indonesia is abundant, and one stone crusher industry can produce 15% - 20% of stone ash. The use of stone ash is currently only limited as a filler in the surface layer of a road pavement. This condition, of course, will cause environmental waste if not used optimally. Sand is a natural material widely available in Indonesia; therefore, sand can be used as a mixture of soft soil to improve the gradation of the grains. Soft soil can be improved by soil stabilization. Stone ash and sand can be used as additives in soil stabilization. Soft soil samples were taken from Lubuk Bayas Village, Serdang Bedagai Regency, North Sumatra. The standard compaction test must be carried out in the first stage to determine the Optimum Moisture Content (OMC), which will be used in the following laboratory test, namely the California Bearing Ratio (CBR) Lab Test. This OMC determines the percentage of water content added to a mixture of soft soil, stone ash, and sand. The variation of the mixture of stone ash and sand is 0%, 5%, 10%, 15%, and 20% (with a ratio of stone ash and sand 50:50). The curing of the test object was carried out for 48 hours. Laboratory CBR testing is carried out to determine the percentage value of CBR to provide an overview of the bearing capacity of the soil produced by various variations of the mixture carried out to obtain the best bearing capacity value. The results showed that adding a mixture of stone ash and sand as much as 5% gave the optimum value of California Bearing Ratio (CBR) of 17.91%. This amount represents an increase of 8.43% from the original CBR value of 9.48%. [ABSTRACT FROM AUTHOR] more...
- Published
- 2024
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