Page 48 - Demo

CONCRETE TECHNOLOGY48 CPI %u2013 Concrete Plant International %u2013 2 | 2026 www.cpi-worldwide.comtar mixer model 77-B0702 (Controls Group, Milan, Italy), the solid sulfur was stirred at 100 rpm while heating. The temperature was monitored throughout the process to maintain sulfur temperature between 130-140%u00b0C; Subsequently, while maintaining the same mixing speed, the aggregates were added in batches to the mixture for at least 10 minutes to ensure thorough blending of the aggregates and liquid sulfur. Then, the mixture was uniformly mixed into preheated molds, and the surface was compacted using the preheated trowel. After compacting, the molds are moved out of the oven, and kept in environmental temperature (20.0%u00b10.5%u00b0C) without special curing conditions. The samples were demolded after 24 hours. The equipment used can be found in Figure 2.Fig. 2: Graph of (a) Heating concrete mixer; (b) Fan-driven heating oven; (c) Molds and samples in the size of 40x40x160 mm%u00b3; (d) Samples in the size of 50x50x50 mm%u00b3a)c) d)b)