Spontaneous combustion

which often takes place at quay of raw coal warehousing and transportation

can damage the concrete members of tunnels. There are some differences between the influence of the spontaneous combustion and that of the fire of the building. The character of the spontaneous combustion is mainly a durative high temperature. And series of physical and chemical changes will occur in concrete at a durative high temperature

which is the primary reason of concrete damage in spontaneous combustion. By investigating the influences of the spontaneous combustion of raw coal on concrete members in tunnels

properties of concrete members under durative high temperature are analyzed which can provide some references for maintenance and designs of concrete members in tunnels of quay.