Year: 2026 | Month: July | Volume: 13 | Issue: 7 | Pages: 44-57
DOI: https://doi.org/10.52403/ijrr.20260706
Analysis of Green Stone Aggregate Quality Improvement Using Cement as Cement-Treated Aggregate Base (LPAS)
Muhammad Ryan Muharis Noor1, Muhammad Arsyad2
1,2Master Program in Civil Engineering, Faculty of Engineering, Lambung Mangkurat University, Banjarmasin, Indonesia
Corresponding Author: Muhammad Ryan Muharis Noor
ABSTRACT
Road infrastructure requires base course materials that are strong, stable, and compliant with technical specifications. This study analyzed the quality improvement of Gunung Rambutan green stone aggregate through cement addition for use as cement-treated aggregate base, locally known as Lapis Pondasi Agregat Semen (LPAS). The analysis covered the physical and mechanical properties of the aggregate, its conformity with the 2025 Bina Marga General Specifications, and the effect of different cement contents on the compressive strength of LPAS classes A, B, S, and C. The study used a laboratory experimental method at the Civil Engineering Laboratory of Lambung Mangkurat University. Tests included unit weight, moisture content, silt content, specific gravity, absorption, Los Angeles abrasion, compaction, and seven-day compressive strength. The green stone aggregate had a Bulk SSD specific gravity of 2.387, water absorption of 2.817%, and silt content of 0.5%, indicating compliance with the required physical criteria. However, the untreated green stone showed a Los Angeles abrasion value of 41.39%, which exceeded the maximum allowable limit of 40%. Partial substitution with Jaro stone, which had an average abrasion value of 28.9%, reduced the blended abrasion value to 35.145% and enabled the mixture to meet the specification. Cement addition increased compressive strength linearly within the tested range. The cement contents required to achieve design strengths of 3.5 MPa and 4.2 MPa were 6.10% and 7.10% for LPAS-A, 6.70% and 7.50% for LPAS-B, 8.80% and 9.95% for LPAS-S, and 8.90% and 9.75% for LPAS-C. LPAS-A was the most efficient mixture because it required the lowest cement content to achieve the planned compressive strength.
Keywords: Green stone aggregate, cement-treated aggregate base, cement, compressive strength, Los Angeles abrasion
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