Rudy Anarta, Refky Adi Nata, Verra Syahmer, Elisa Inten Khairunnisa
The mix design and material performance of the B-1 class concrete utilized in the Serang–Panimbang Toll Road Project (Section 3 STA 73+000–77+387) are assessed in this study. For precision and SNI compliance, the quantity of the concrete mix was modified according to the moisture content. The concrete mix design complied with SNI 7656:2012 requirements, which included a water-to-cement ratio of 0.456, a maximum aggregate size of 25 mm, and a fine aggregate percentage of 42.20%. Physical characteristics tests (specific gravity, water absorption, and fineness modulus) and sieve analysis of fine and coarse aggregates were conducted in the laboratory, along with assessments of compressive strength at 3, 7, and 28 days. With an average 3-day compressive strength of 21.45 MPa, early strength development was seen. The strength at 7 days was 25.65 MPa, which was in line with normal strength evolution but slightly below the goal of 30 MPa. At 28 days, the average compressive strength of 34.83 MPa was higher than the desired value. With fine aggregate FM values of 2.692 and 3.376 for various sources, sieve analysis showed that aggregate grading followed ASTM C33:2018 guidelines. Despite greater water absorption, coarse aggregate testing revealed conformity with specifications. In order to achieve the required strength and workability, the mix design and material quality showed adherence to SNI and ASTM standards. Its appropriateness for major infrastructure projects was confirmed by the inclusion of fly ash, which increased final strength and sustainability. © 2025, IPMEDIA SDN BHD. All rights reserved.
Geological Engineering Department, Universitas Negeri Padang, Sumatera Barat, Padang, Indonesia; School of Resources and Environmental Engineering, Wuhan University of Technology, Hubei, China; Mining Engineering Department, Universitas Negeri Padang, Sumatera Barat, Padang, Indonesia; Agro Industrial Engineering Department, Politeknik ATI Padang, Sumatera Barat, Padang, Indonesia; School of Management, Wuhan University of Technology, Hubei, China
