Combine Reservoir Sediments With Industrial Sludge Ash in Sintered Bricks Manufacturing

This study proposes a novel approach to producing sintered bricks by combining industrial sludge ash (ISA) and waste glass (WG) powder with sediments from three reservoirs in southern Taiwan—Tseng‐Wen Reservoir (TWR), Bai‐He Reservoir (BHR), and A‐Gong‐Dian Reservoir (AGDR), fully replacing traditional clay. The innovation lies in the synergistic use of three waste materials. Experimental bricks were produced in three stages. BHR sediment demonstrated the highest compressive strength (44.34 MPa) and acceptable water absorption (12.47%) in the first stage, meeting the National Standards of the Republic of China (CNS) standards. In the third stage, the optimal mixture of 50% sediment, 20% ISA, and 30% WG (S20B50G30) achieved a compressive strength of 13.91 MPa, meeting CNS second‐class standards, while maintaining low chloride ion content and fire shrinkage. All bricks were molded under a pressure of 4 MPa (applied for 5 s, repeated five times) and sintered at 1000°C for 1 h, with a heating rate of 36°C/h and cooling duration of 28 h. The sintering parameters were fixed throughout. This study demonstrates the feasibility of manufacturing environmentally friendly bricks using reservoir sediments and industrial byproducts, offering a sustainable solution for sediment reuse.