Prediction and Control Methods of Early Age Cracks for Bridge Barrier Walls

摘要

Based on the ultimate tensile strain model, the thermal strain model, the shrinkage strain model, the creep strain model of early age concrete, and the restraint coefficient, an algorithm is proposed in this paper to calculate the restraint strain of the early age concrete. The strain criterion, namely comparing the restraint strain with the ultimate strain, is used to predict the early age cracking of bridge barrier walls. An example is provided to illustrate the procedure of predicting the early age cracking of the bridge barrier walls. This paper summarizes the control methods of the early age cracking of the bridge barrier walls according to the proposed prediction methods.