ABSTRACT
In this paper the difference in the thermal stress of the concrete adding MgO and that of concrete without MgO is investigated. And the thermal compensation method which takes into account the slight time-dependent expansion in the concrete due to MgO is put forth. The autogenous volume change in correspondence with the different ages and distribution of temperature field is simulated in a rigorous way so as to reflect the effect of temperature. The application of the method into one project helps cast a light on the issues related to use of MgO in hydraulic structures of concrete. The stress compensation effect of MgO at different locations of the concrete dam is also discussed. The conclusions may act as the reference in future design and construction of dams.
