陕西煤炭2024，Vol.43Issue(8)：19-24,6.DOI:10.20120/j.cnki.issn.1671-749x.2024.0804
仿钢纤维对混凝土耐腐蚀性的影响
Impact of steel fiber mimicry on the corrosion resistance of concrete
马王军 1彭建臣1
作者信息
- 1. 陕西能源赵石畔矿业运营有限责任公司,陕西榆林 719100
- 折叠
摘要
Abstract
C60 concrete is a crucial material commonly used in wellbore wall construction,which is susceptible to the com-plex and varying external loads and the coupled effect of sulfate erosion in certain geological formations.These factors can lead to damage and cracking of the concrete material in wellbore walls,posing safety risks.Our study focuses on C60 con-crete and conducts uniaxial compression tests with varying steel fiber dosages under different dry-wet cycle conditions to in-vestigate the rock mechanics behavior of concrete specimens.The study also calibrates microscopic mechanical parameters using the PFC2D software and further explores the impact of steel fiber dosages on the service life of concrete by establishing a peak strength prediction model.The results indicate the following:simulating coarse aggregates using the Clump command and modeling uniaxial compression tests with the linear parallel bond model align with the mechanical behavior observed in laboratory experiments,providing reliable reference values;with increased corrosion,concrete specimens with a 1.0％steel fiber dosage exhibit the smallest fluctuations in peak stress-strain and the most gradual decrease in compressive strength cor-rosion resistance coefficient;results from the GM(1,1)peak strength prediction model show that the service life of concrete with a 1.0％steel fiber dosage is significantly better than other groups,consistent with numerical simulation results.The findings of the research can serve as a theoretical reference for evaluating the quality of rock engineering related to corro-sion-resistant concrete.关键词
矿井建设/井壁损伤/仿钢纤维/高性能混凝土/腐蚀性试验Key words
mine construction/shaft wall damage/steel fiber mimicry/high-performance concrete/corrosion test分类
建筑与水利引用本文复制引用
马王军,彭建臣..仿钢纤维对混凝土耐腐蚀性的影响[J].陕西煤炭,2024,43(8):19-24,6.
