Journal of Shandong University(Engineering Science) ›› 2026, Vol. 56 ›› Issue (1): 105-113.doi: 10.6040/j.issn.1672-3961.0.2024.289

• Civil Engineering • Previous Articles    

Experimental investigation of tensile mechanical properties and failure mechanisms of steel slag ultra-high performance concrete

GUO Min1,2, HAN Linxuan1*, LI Jingjun1   

  1. GUO Min1, 2, HAN Linxuan1*, LI Jingjun1(1. College of Civil Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China;
    2. Inner Mongolia Autonomous Region Key Laboratory of Civil Engineering Safety and Durability(Inner Mongolia University of Science and Technology), Baotou 014010, Inner Mongolia, China
  • Published:2026-02-03

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Abstract: With the goal of low-carbon environmental protection, the application of solid waste steel slag in ultra-high performance concrete(UHPC)was explored to develop green and environmentally friendly steel slag UHPC. The research examined the effect of varying contents of steel slag powder and steel slag aggregate on the tensile properties of steel slag UHPC through axial tensile tests. Specifically, it analyzes the effects of replacing cement with steel slag powder and quartz sand with steel slag aggregate at different contents on the axial tensile curve and mechanical indices of UHPC. The tensile failure mechanisms of steel slag UHPC were also explored. The results indicated that while the axial tensile strength of UHPC decreased with the inclusion of either steel slag powder or steel slag aggregate, it remained within acceptable limits. The material's ductility is impacted by the type and amount of steel slag used; specifically, adding steel slag powder alone enhanced ductility, whereas adding steel slag aggregate alone reduced it. When the combined content of steel slag powder and aggregate was relatively low, the material exhibited good ductility and a multi-crack failure mode. Based on the analysis of the tensile stress and strain characteristics, an optimal steel slag content for steel slag UHPC was recommended.

Key words: ultra-high performance concrete, steel slag powder, steel slag aggregate, tensile properties

CLC Number: 

  • TU528
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