CAJ | 학술논문

本文采用自由落锤抗弯冲击装置研究了改性煤沥青碳纤维混凝土的抗弯冲击性能。随着纤维掺量的增加，混凝土冲击性能显著提高。纤维体积掺量为0.076%时，改性煤沥青碳纤维混凝土的初裂冲击次数、破坏冲击次数分别比素混凝土提高1458％、1462％，当掺量大于0.076%时，冲击韧性不再明显提高。
본문채용자유락추항만충격장치연구료개성매력청탄섬유혼응토적항만충격성능。수착섬유참량적증가，혼응토충격성능현저제고。섬유체적참량위0.076%시，개성매력청탄섬유혼응토적초렬충격차수、파배충격차수분별비소혼응토제고1458％、1462％，당참량대우0.076%시，충격인성불재명현제고。
Flexural impact behavior of reinforced concrete with modified coal tar pitch carbon fiber was studied by free drop hammer device in this paper. The results showed that impact behavior of concrete was improved significantly with increase of fiber volume content. When it was 0.076%, first crack impact and fracture impact times of carbon fiber reinforced concrete were increased 1458%and 1462%than that of plain concrete. However, when more than 0.076%, impact behavior of fiber concrete was no longer improved.