Application of the Taguchi Method for Optimizing the Process Parameters of Producing Controlled Low-Strength Materials by Using Dimension Stone Sludge and Lightweight Aggregates

In view of the increasing concerns over non-renewable resource depletion and waste management, this paper studied development low-density controlled low-strength material (CLSM) by using stone sludge lightweight aggregates. First, investigation was performed at a laboratory scale to assess effects composition on properties resulting CLSM. The Taguchi method with an L9(34) orthogonal array four controllable three-level factors (i.e., dosage, water binder ratio, accelerator dosage aggregate dosage) adopted. Then, optimize selected parameters, analysis variance used explore experimental performance (fresh hardened properties) produced test results show that when percentage usage increased from 30% 60%, initial setting time approximately doubled average. Moreover, age 28 days, compressive strength most specimens did not exceed upper limit 8.83 MPa stipulated Taiwan’s Public Construction Commission. Further, cost per cubic meter CLSM about NT$ 720.9 lower than ordinary CLSM, which could reduce 40.6%. These indicate use as raw produce achieve environmental sustainability. other words, aggregates extremely feasible.