文摘
The highest strength was achieved when 50% of modified sulfur was replaced by fly ash. With more than 40% fly ash, the microstructure of sulfur matrix was completely changed. At a low ratio of fly ash, the use of 5–10% rubber powder enhanced the strength of sulfur composites. Sulfur mortars with 5–10% sand showed lower strengths than sulfur composites with rubber powder. The sulfur composites had very low porosities, and the use of fly ash reduced the porosity.