Application of a self-compacting ultra-high-performance fibre-reinforced concrete to retrofit RC beams subjected to repeated loading

作者：Al Azzawi B S; Karihaloo B L^*

来源：Sadhana : Academy Proceedings in Engineering Sciences , 2018, 43(9): UNSP 145.

DOI：10.1007/s12046-018-0876-0

• UHPFRC
• self-compacting mix
• flexural fatigue
• static flexural strength
• fatigue endurance limit
• retrofitting

The aim of this paper is to describe the performance of reinforced concrete (RC) beams retrofitted with a self-compacting ultra-high-performance fibre-reinforced concrete (UHPFRC) under three-point bend cyclic loading. It is found that retrofitting the RC beams with a thin UHPFRC strip on the tension face increases their endurance limit under a non-zero mean stress cyclic loading from approximately 40% to approximately 60% of their static three-point flexural strength. Moreover, the retrofitted beams behave as a composite structure, with no delamination of the retrofit strip being observed in any of the fatigue tests.

• 出版日期2018-9