Year: 2025 | Month: December | Volume: 12 | Issue: 12 | Pages: 765-770
DOI: https://doi.org/10.52403/ijrr.20251278
Analysis of Implementation Methods and Effectiveness of Industrial Waste Utilization for Soil Stabilization in Local Roads
Ahmad Jimmy, Irfan Prasetia
Master Program in Civil Engineering, Faculty of Engineering, Lambung Mangkurat University, Banjarmasin, Indonesia
Corresponding Author: Ahmad Jimmy
ABSTRACT
Soil stabilization using additives is a method for enhancing the mechanical properties of soil. Previous studies have demonstrated that fly ash and rice husk ash can improve soil characteristics. However, these studies often occur only in laboratory settings. This research aims to directly evaluate the implementation methods and cost estimates. In this study, the percentages of fly ash used as an additive in the mixture were 15%, 20%, and 25% of the dry weight of the original soil, while the percentage of rice husk ash used was 5% of the soil's dry weight. A Sand Cone test was conducted to measure field compaction, followed by a 7 day curing period before performing the Dynamic Cone Penetrometer (DCP) test. Additionally, a California Bearing Ratio (CBR) test was conducted in the laboratory to compare the results. Among the various mixture combinations tested, the composition of 25% fly ash and 5% rice husk ash produced the best results, with a 142% increase in CBR value. Using a cultivator and pedestrian roller, the implementation cost was calculated at IDR 537,589 per cubic meter, making it the most efficient and effective option compared to other variations. It also demonstrated up to 41% cost efficiency compared to the conventional method using cement.
Keywords: Fly ash, Rice husk ash, Stabilization, Implementation methods, Cost estimation, Local roads
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