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Shen J.,Laboratory of Civil Engineering | Yurtdas I.,Laboratory of Civil Engineering | Diagana C.,Laboratory of Civil Engineering | Li A.,Laboratory of Civil Engineering
Applied Mechanics and Materials | Year: 2012

The shear behavior of prestressed self-compacting concrete (SCC) beams has been investigated in this study. The effect of compressive strength of SCC on the shear strength has been taken into account in test program. Based on the experimental data, the failure mechanism of the prestressed SCC beams was discussed and the shear transfer mechanism of the RC beam after the flexure-shear cracking was also analyzed © (2012) Trans Tech Publications, Switzerland.

Sabeur H.,Laboratory of Civil Engineering | Sabeur H.,Navier Institute | Colina H.,Laboratory of Civil Engineering | Colina H.,Navier Institute
Materials and Structures/Materiaux et Constructions | Year: 2015

In this paper, the variations of transient creep strain of high performance concrete, high strength concrete and ordinary concrete during a heating–cooling cycle are presented. Two heating rates are applied: 1.5 and 0.1 °C/min corresponding, respectively, to accidental and service conditions. The temperatures of 400 and 220 °C are the heating’s final temperature phase of the accidental and service conditions, respectively. Further, during the heating phase, the corresponding heating rates are applied until successive constant temperature levels are achieved: 150, 200, 300 and 400 °C under accidental conditions and 140, 190 and 220 °C under service conditions. Those applied temperatures are maintained for several hours to ensure the stabilisation of internal temperature and physico-chemical thermo-dependent processes. To study the importance of internal properties changes, especially those related to free and bound water, some specimens are submitted to a second heating cycle. Moreover, the influence of the difference in mix concretes and the influence of the heating rate are also presented. © 2014, RILEM.

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