The Kediri-Tulungagung Toll Road Project necessitates high-quality concrete production to meet the rigorous specifications outlined by Indonesia's Ministry of Public Works and Housing. This study focuses on evaluating the feasibility of an on-site batching plant in producing concrete that complies with the specified quality standards for freeways and toll roads. Using the Job Mix Design method and referring to SNI 03-2834-2000, the research examines the plant's ability to consistently achieve the desired concrete quality. Data on material properties, production costs, and operational efficiency were collected and analyzed through a mixed-methods approach, integrating qualitative and quantitative data. The findings confirm that the plant meets the required technical specifications, achieving a compressive strength of 30 MPa to 50 MPa, with over 90% of samples exceeding quality benchmarks. Additionally, the investment analysis reveals cost savings of approximately 15% compared to external suppliers, making it economically viable. The integration of modern technologies, such as computerized mixing systems and effective waste management practices, supports sustainability goals by reducing carbon emissions and recycling concrete waste. This study provides crucial insights and practical recommendations for implementing internal batching plants in large-scale infrastructure projects, offering a sustainable and cost-effective solution for reliable concrete production.
Suwito et al. (Mon,) studied this question.