Description
This paper investigates the influence of geogrid reinforcement on the flexural behavior of concrete pavements after the initiation of cracks up to failure. Two groups of notched concrete beam specimens with the dimensions of 150 × 150 × 550 mm were tested. The concrete specimens of the first group were tested under static loads. The concrete specimens of the second group were tested under cyclic loads. The geogrid was placed at a depth of 55 mm from the bottom of the concrete specimens. Test results illustrate that, when cracks are visible in the concrete specimens, the geogrid could maintain the flexural behavior of the concrete pavements within the acceptable service level. The geogrid significantly prolonged the fatigue life of the cracked concrete pavements reinforced with the geogrid. The geogrid increased the maximum cyclic loads of the concrete specimens reinforced with geogrid before eventually failing. The number of geogrid layers used as a flexural resisting material under cyclic loads acts a significant role in improving the behavior of the concrete pavements compared with the specimens reinforced with one layer of geogrid.
