FLEXUAL RESPONSE OF BTRC WITH PRE-TENSION AND SHORT FIBERS UNDER LOW SPEED IMPACT LOADS
The flexural impact properties of basalt textile reinforced concrete (BTRC) specimens with pre-tension, short carbon, steel, and AR-glass fibres were investigated.The flexural strength, flexural modulus and toughness, were determined under different impact speeds.The flexural strength and toughness of the BTRC specimens without pre-tension significantly increased when the impact speed (1.0-3.0 m/s) and the number of basalt textiles layers were increased.The flexural modulus initially increased and subsequently decreased with increasing impact speed.When the basalt textile had four reinforcement layers, the BTRC reinforced with 0.5 Vol% of short carbon fiber or short steel fiber exhibited varied different flexural responses under different impact speeds (1.0-4.0 m/s).In addition, pre-tensioned BTRC with different short fibers were tested under an impact speed of 1.0 m/s.The flexural strength decreased as the short carbon fiber and glass fiber contents increased.The highest flexural strength was observed in the pre-tensioned specimen with 0.5 Vol% of short glass fiber and three layers of basalt textile.The addition of short fibers in cement matrix, the number of textile layer used as reinforcement, the pretension on textile, and the impact speeds used in the tests can significantly affect the dynamic impact behaviour of BTRC samples.
Flexual response BTRC Pre-tension Short fibers Low speed impact loads
Sai Liu Deju Zhu
Key Laboratory for Green & Advanced Civil Engineering Materials and Application Technology of Hunan Province, College of Civil Engineering, Hunan University, Changsha, China
国际会议
福州
英文
464-483
2018-11-07（万方平台首次上网日期，不代表论文的发表时间）