Proposed Curing Method for Grouting Concrete within Box Girder Bridges in Cold Regions and during Cold Seasons

In colder geographical regions, such as areas in high latitudes and altitudes, care must be taken when constructing concrete structures so that the concrete will cure successfully. Moreover, in cases of the construction of large bridges in deep valleys, it is usually difficult to cure the entire bridge. The grouting for introducing pre-stress is the most important task regarding pre-stressed concrete bridges because the grouting stretches the stress to the whole of the bridge. If the concrete quality is not satisfactory, the designed concrete power cannot be obtained. Furthermore, the durability of the bridge life might be limited. This paper proposes a grout concrete curing method which compares the bridge body temperature under both heated and unheated conditions.