Papers by Author: Quan Xin Yi

Abstract: Aiming at influencing factors in the abominable natural environment in permafrost district of Qinghai-Tibet railway, according to different requirements on concrete’s durability performance which exerted by different climatic conditions and different environment of Qinghai-Tibet railway, the design and the construction on site of durable concrete was investigated.

Abstract: This paper presents a review on the effect of fire on concrete, citing 43 references. It was found that most of them are on the behavior of concrete under high temperature conditions more or less different from the standard fire condition. The problem of spalling, which high-strength concrete encounters when exposed to fire, is especially urgent to solve. Since the literature on the behavior of concrete under fire conditions is very limited, the literature even under elevated temperature has to be used as a part of the base of further research. The further research needs urgently to be carried out under the standard fire condition. Residual mechanical properties reported in most previous literature might be overestimated, where natural cooling was usually employed. Proper evaluation of fire resistance of concrete needs more experimental data obtained under various cooling regimes such as water spraying or water quenching.