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>Effect of Depth and Number of Layers of Reinforcement on Bearing Capacity Ratio of Strip Footing Resting on Granulated Blast Furnace Slag Reinforced with Geogrid
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Effect of Depth and Number of Layers of Reinforcement on Bearing Capacity Ratio of Strip Footing Resting on Granulated Blast Furnace Slag Reinforced with Geogrid
Granulated blast furnace slag (GBS) is produced in the process of iron/steel making by quenching the blast furnace slag through water. GBS may be used as structural fills in the low laying areas for developing the residential and industrial sites in place of sand because physical and strength properties i.e. gradation, specific gravity and bearing capacity of GBS is similar to sand. To enhance the bearing capacity of GBS fill, it may be reinforced with geogrid. In the present study, an attempt has been made to study and compare the bearing capacity ratio of strip footing on unreinforced and reinforced GBS fill with geogrid. All tests have been performed by using biaxial polymer geogrid as reinforcement. In the parametric study, the number of geogrid layers has been varied from 1 to 8 and the effects in the bearing capacity ratio have been studied. In the second study, the effects of depth of the upper most layer of geogrid from the base of the footing on bearing capacity ratio have been studied. Based on the model test results, the critical depth of upper most layer of reinforcement and the number of geogrid layers for mobilizing the maximum bearing-capacity ratio have been determined, compared and reported.
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