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Influence of environmental temperature and moisture conditions on fatigue resistance of concrete

机译:环境温度和水分条件对混凝土疲劳性的影响

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摘要

It is known that the fatigue resistance of concrete decreases when the concrete is saturated with water and that the compressive strength increases with increasing water content at low temperatures below the freezing point of water. However, there have been few systematic studies on the influence of the ambient temperature and moisture content on the fatigue resistance of concrete. In the present study, static loading and fatigue tests were carried out on concrete cylinders to determine their fatigue resistance under compression. The test methods had been conducted to considered environmental temperatures and water contents. The results indicated that at room temperature, the static compressive strength decreases with increasing moisture content. In contrast, at a low temperature, the compressive strength of the samples increased with increasing moisture content. Furthermore, regardless of the temperature, the fatigue resistance decreased as the moisture content increased.
机译:众所周知,当混凝土用水饱和时,混凝土的疲劳抗性降低,并且抗压强度随着水含量的低温下降到水的低温下增加。然而,关于环境温度和水分含量对混凝土疲劳抗性的影响很少有系统研究。在本研究中,在混凝土汽缸上进行静载荷和疲劳试验,以确定它们在压缩下的疲劳性。已经进行了测试方法,以考虑环境温度和水含量。结果表明,在室温下,静态抗压强度随着水分含量的增加而降低。相反,在低温下,样品的抗压强度随着水分含量的增加而增加。此外,无论温度如何,随着水分含量增加时,疲劳性降低。

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