Title:
Hardened and Durability Properties of Concrete Made with Washed Waste Fines (Prepublished)
Author(s):
Tarek Uddin Mohammed, Mohammad Zunaied Bin Harun, Chowdhury Zubayer Bin Zahid, and Redwan Ul Islam
Publication:
Materials Journal
Volume:
Issue:
Appears on pages(s):
Keywords:
carbonation; concrete; ready-mixed concrete; rapid chloride migration test; returned concrete; washed waste fine
DOI:
10.14359/51747872
Date:
6/11/2025
Abstract:
This research investigates the impact of using washed waste fines (WWF), a byproduct from ready-mixed concrete (RMC) plants, as a partial replacement for natural sand in concrete. Cylindrical (100mm x 200mm) and cubic mortar specimens (50mm x 50mm x 50mm) were created with 20% WWF substitution. Hardened properties such as compressive strength, tensile strength, UPV, and durability parameters such as chloride migration coefficient and carbonation coefficient were evaluated. The study also examined the microstructure of concrete using a Scanning Electron Microscope (SEM). Results showed that incorporating WWF enhanced both the hardened and durability properties of concrete, increasing compressive strength by 25% compared to the control case. Additionally, WWF decreased the non-steady-state chloride migration and carbonation coefficients, indicating improved durability. SEM analysis revealed a denser microstructure, and WWF incorporation reduced the permeable porosity and absorption capacity of concrete.