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Abstract
Soil with high swelling and shrinkage properties has a low shear strength value. Such soil is certainly dangerous if used as a foundation for buildings. This research article presents asbestos waste as an alternative soil stabilizer because of the magnecium-calcium-silicat that can be used as a binder and also as a filler to fill the voids in the soil. The value of the soil shear strength parameters can be obtained from the Triaxial Unconsolidated Undrained test. The percentages of asbestos waste used are 3%, 6%, and 9% with curing periods of 0, 1, and 14 days. The results of the research show that the original soil is classified according to the USCS method as SP-SC soil with plasticity index(PI) value is 21,73%. After conducting the triaxial test on the original soil, the original soil cohesion value is 0,12 kg/cm² and the internal friction angle is 11,20°. After stabilization with several variations, it was found that the addition of asbestos waste affects the plasticity index, cohesion, and internal friction angle. Adding 9% of asbestos waste gives the maximum value of plasticity index which is 9,58%. Adding 6,37% asbestos waste with 14 days of curing provides the most optimum cohesion achieved is 0,46 kg/cm² and internal friction angle value is 27,3°. The maximum load produced by one column (Qv) is 88,80 ton, and the highest allowable loads(Qall) is 108,89 ton using a rectangular-shaped foundation(1,00 x 1,50) meter dimension. The stabilization process involved manually mixing the soil and asbestos beneath the foundation. Therefore, stabilization using asbestos waste is quite effective.
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References
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References
Asuri. S. and Keshavamurthy. P. (2016) ‘Expansive Soil Characterisation : an Appraisal’. INAE Letters. 1(1). pp. 29–33. Available at: https://doi.org/10.1007/s41403-016-0001-9.
Basack. Sudip & Purkayastha. R.. (2009). Engineering properties of marine clays from the eastern coast of India. 1.
Budhu. M. (2015). SOIL MECHANICS. Wiley Blackwell.
Jaya. F. A. (2010). PENGARUH PENAMBAHAN LIMBAH ASBES PADA TANAH LEMPUNG LAPINDO SEBAGAI BAHAN TIMBUNAN (Doctoral dissertation. ITN Malang).
Kalantari. B. (2018) ‘Foundations on Expansive Soils : A Review Foundations on Expansive Soils : A Review’. (September 2012).
Panguriseng. D. (2018). Dasar-dasar Teknik Perbaikan Tanah. Yogyakarta: Pustaka AQ.
Robert Kusiorowski. Barbara Lipowska. Magdalena Kujawa. Anna Gerle. (2023). Problem of asbestos-containing wastes in Poland. Cleaner Waste Systems.
Roy. S. and Kumar Bhalla. S. (2017) ‘Role of Geotechnical Properties of Soil on Civil Engineering Structures’. Resources and Environment. 7(4). pp. 103–109. Available at: https://doi.org/10.5923/j.re.20170704.03.