Flexural behaviour and evaluation of ultra-high-performance fibre reinforced concrete beams cured at room temperature.

ABSTRACT: Heat treatment is often required for ultra-high-performance concrete (UHPC) to achieve high strength. To broad its use in construction, the effect of different curing conditions on the properties of UHPC has been developed for many years. The experimental investigation of large scale ultra-high-performance fibre reinforced concrete (UHPFRC) beams is limited. In the present study, UHPFRC specimens and concrete cured at 20 °C were prepared to investigate the properties and flexural behaviour. The standard cubic compressive strength of UHPFRC specimens cannot be achieved at curing temperature of 20 °C. The bearing capacity under flexure was enhanced with the increase of reinforcement ratio. The failure modes of beams changed from ductile to brittle as the reinforcement ratio increased from 1.

SUBMITTER: Huang J 

PROVIDER: S-EPMC8463697 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature