Numerical Analysis and Research on Compressive Strength of Steel-Like Basalt Hybrid Fiber All-Light Concrete Based on Python

Wenman Jiang; Yuze Tian; Chunliang Dong; Huaiqing Yang; Rui Hu

doi:10.54097/arsjbm51

Authors

Wenman Jiang
Yuze Tian
Chunliang Dong
Huaiqing Yang
Rui Hu

DOI:

https://doi.org/10.54097/arsjbm51

Keywords:

Imitation Steel Fiber, Basalt Fiber, All-light Concrete, Mesoscopic Simulation, Compressive Strength

Abstract

Based on Python, this paper develops a three-dimensional mesoscopic numerical model of steel-basalt hybrid fiber lightweight concrete, aiming at revealing its compressive failure mechanism under static load. The fiber distribution model is simplified by Monte Carlo random sampling theory, and a heterogeneous composite model including aggregate, mortar, fiber and interface transition zone is established by combining the lightweight characteristics of coal gangue ceramsite as coarse aggregate. The test results show that the mixed use of basalt fiber and imitation steel fiber significantly improves the compressive strength of concrete, and the compressive strength reaches 30 MPa. The error between the simulation results and the test data is less than 3%. Comparing the mechanical properties of steel slag replacing ceramsite, it is found that the compressive strength of steel slag system is increased to 35 MPa, but the brittleness is enhanced, and the failure mode is changed from X-shaped micro-crack network of ceramsite system to concentrated splitting main crack. This study provides an efficient modeling method for micromechanical analysis of hybrid fiber lightweight aggregate concrete, and verifies the feasibility of recycling industrial solid waste.

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