JCI Annual Convention 2025 in Morioka
Jul 16 - Jul 18, 2025
JCI Annual Convention 2025 in Morioka
Jul 16 - Jul 18, 2025
[1048]DEVELOPMENT OF ECO-FRIENDLY CONTROLLED LOW-STRENGTH MATERIAL UTILIZING FRESH CONCRETE WASTE AND BY-PRODUCTS
Ebsa HATEU1, Akira HOSODA1, Thang Ngoc PHAN2, Mitsuya MIYAMOTO3(1.Yokohama National University 2.University of Technology and Education, The University of Danang 3.Nagaoka Ready-Mixed Concrete Company)
This study investigates the utilization of concrete sludge powder (CSP), reused waste from the sludge cake generated by returned concrete and concrete truck cleaning, as a partial replacement for Improved Water Absorption (IWA) fine aggregate in Controlled Low-Strength Material (CLSM). The processed CSP was incorporated into CLSM mixes at replacement levels of 0%, 10%, 15%, 20%, and 25% by weight of the IWA fine aggregate. Experimental results indicate that up to 20% replacement with CSP produces an eco-friendly CLSM suitable for backfilling buried pipes.