This paper aims to prevent and control the hydration heat crack by analyzing the hydration heat coefficient in a bridge construction project, in which process it explores the reasons and concrete parameters as well as takes corresponding control measures. The analysis suggests that the reason for the hydration heat phenomenon in this project lies in temperature change. And the conclusion is that the calculation precision of the analysis fitted by cubic polynomials is higher than that of traditional analysis fitted by quadratic polynomials, so that the hydration heat phenomenon can be dealt with in a better way.
