CAJ | 학술논문

采用74mm 分离式霍普金森压杆（SHPB）试验装置对四种不同含量的钢纤维混凝土试件在-40℃下进行了冲击试验，分析了低温环境下应变率对钢纤维混凝土试件的影响，探讨了低温动力学试验中钢纤维含量对试件动强度的影响规律。试验结果表明，钢纤维的加入对混凝土的动态力学性能有较大的提高，较理想的钢纤维掺量为1.5%。
채용74mm 분리식곽보금삼압간（SHPB）시험장치대사충불동함량적강섬유혼응토시건재-40℃하진행료충격시험，분석료저온배경하응변솔대강섬유혼응토시건적영향，탐토료저온동역학시험중강섬유함량대시건동강도적영향규률。시험결과표명，강섬유적가입대혼응토적동태역학성능유교대적제고，교이상적강섬유참량위1.5%。
The impact tests of steel fiber reinforced concrete specimens with four different contents were carried out at -40℃ by using 74mm split Hopkinson pressure bar (SHPB) test device. The influence of strain rate on steel fiber rein≥forced concrete specimens at a low temperature is analyzed, and the influence rules of steel fiber content on dynamic strength are discussed according to low temperature dynamic test. The results show that adding steel fiber can greatly im≥prove the dynamic mechanical properties of the concrete, and the best content of steel fiber is 1.5%.