Journal of Shandong University(Engineering Science) ›› 2025, Vol. 55 ›› Issue (6): 120-128.doi: 10.6040/j.issn.1672-3961.0.2024.249

• Civil Engineering • Previous Articles    

Inverse analysis on the softening curve of steel slag fine aggregate concrete

XUE Gang, ZHANG YifanSymbolj@@, LIU Jiangsen, DONG Wei   

  1. XUE Gang, ZHANG YifanSymbolj@@, LIU Jiangsen, DONG Wei(Civil Engineering School, Inner Mongolia University of Science and Technology, Baotou 014010, Inner Mongolia, China
  • Published:2025-12-22

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Abstract: In order to study the influence of steel slag fine aggregate volume fraction on the softening characteristics of concrete, the steel slag fine aggregate with stability meeting the specification limit requirements was selected to prepare concrete for wedge splitting test, and the inverse analysis program was established by ISIGHT integrated MATLAB and ABAQUS, and the trilinear softening curve of steel slag fine aggregate concrete was deduced, and the accuracy of finite element analysis of the softening curve was verified based on the wedge splitting tensile test results. The results showed that steel slag could significantly improve the tensile strength of concrete and accelerate the stress reduction of concrete after cracking. When the steel slag volume fraction was 20%, the slope of the second segment of the trilinear softening curve decreased the most. The cracking displacement of concrete at the end of the softening curve decreased with the increase of steel slag volume fraction, and the ductility of concrete deteriorated. The softening curve of steel slag fine aggregate concrete provided a theoretical basis for studying its softening performance.

Key words: materials engineering, steel slag concrete, wedge and split, inverse analysis method, softening curve

CLC Number: 

  • TU528.51
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[1] XUE Gang, LIU Qiuyu, DONG Wei, LI Jingjun. Mechanical properties and constitutive relationship of steel slag fine aggregate concrete under impact load [J]. Journal of Shandong University(Engineering Science), 2025, 55(4): 108-117.
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