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<p>Ultra-high-performance concrete (UHPC) has attracted increasing attention due to its superior mechanical and durability properties; however, limited research has investigated the combined influence of supplementary cementitious materials (SCMs) and curing regimes on its abrasion resistance. This study evaluates the performance of UHPC incorporating binary and ternary SCM systems consisting of fly ash (FA) and silica fume (SF) under continuous moist curing (28MC and 90MC), interrupted wet–dry curing cycles (4M3D and 7M3D), and 28-day air-dry curing (28AD). The results showed that both SCM incorporation and curing regime significantly influenced the mechanical and abrasion performance of UHPC. Under continuous moist curing, ternary SCM systems demonstrated up to 29% lower wear depth compared with the control UHPC, while binary silica fume systems achieved improvements of approximately 12–16%. Binary fly ash systems exhibited smaller early-age improvements of approximately 1–7%, although their abrasion resistance improved with prolonged curing due to delayed pozzolanic activity. Continuous moist curing increased compressive strength by approximately 16–30% compared with air-dry curing, while interrupted wet–dry curing reduced wear depth by approximately 4–6% under shorter cycles and up to 9–17% under extended moist-curing periods. Extending the moist-curing duration within interrupted cycles improved abrasion resistance by approximately 9% compared with shorter wet–dry regimes. Overall, the combined use of fly ash and silica fume, together with adequate moist curing, significantly enhanced UHPC abrasion resistance and mechanical performance under both ideal and interrupted curing conditions.</p>

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The influence of supplementary cementitious materials and curing conditions on the wear resistance of ultra-high-performance concrete

  • 期刊论文

  • 发表日期：

    2026年6月22日

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  • Nader Ghafoori,
  • Aderemi Gbadamosi

摘要

Ultra-high-performance concrete (UHPC) has attracted increasing attention due to its superior mechanical and durability properties; however, limited research has investigated the combined influence of supplementary cementitious materials (SCMs) and curing regimes on its abrasion resistance. This study evaluates the performance of UHPC incorporating binary and ternary SCM systems consisting of fly ash (FA) and silica fume (SF) under continuous moist curing (28MC and 90MC), interrupted wet–dry curing cycles (4M3D and 7M3D), and 28-day air-dry curing (28AD). The results showed that both SCM incorporation and curing regime significantly influenced the mechanical and abrasion performance of UHPC. Under continuous moist curing, ternary SCM systems demonstrated up to 29% lower wear depth compared with the control UHPC, while binary silica fume systems achieved improvements of approximately 12–16%. Binary fly ash systems exhibited smaller early-age improvements of approximately 1–7%, although their abrasion resistance improved with prolonged curing due to delayed pozzolanic activity. Continuous moist curing increased compressive strength by approximately 16–30% compared with air-dry curing, while interrupted wet–dry curing reduced wear depth by approximately 4–6% under shorter cycles and up to 9–17% under extended moist-curing periods. Extending the moist-curing duration within interrupted cycles improved abrasion resistance by approximately 9% compared with shorter wet–dry regimes. Overall, the combined use of fly ash and silica fume, together with adequate moist curing, significantly enhanced UHPC abrasion resistance and mechanical performance under both ideal and interrupted curing conditions.