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Estimate of the Bearing Capacity on Subbase and Subgrade with Dynamic Plate Bearing Test  

Youn, Ilro (Kyungpook National University, Department of Construction & Disaster Prevention Engineering)
Oh, Sewook (Kyungpook National University, Department of Construction & Disaster Prevention Engineering)
Publication Information
Journal of the Korean GEO-environmental Society / v.14, no.8, 2013 , pp. 53-60 More about this Journal
Abstract
The compaction control method of national road substructure is using field density test to determine the relative compaction and plate bearing test to check the load bearing capacity. However, these two tests digitize a construction site manager's judgment based on his experience, so mechanical basis is weak. Resilient modulus method, which is recently being used to resolve such problem, is evaluated as a rational design method of pavement structure that can rationally reflect the stress-strain state of pavement materials that is caused by the condition of load repetition of vehicle load. However, the method of measuring the resilient modulus is difficult and lengthy, and it has many problems. To replace it, light falling weight test is recently being proposed as a simple test method. Therefore, this research uses dynamic plate loading test, which quickly and simply measures the elastic modulus of the subgrade and sub-base construction and site of maintenance, to judge the possibility of compaction control of the stratum under the road, and it proposes relation formula by analyzing the result of static load test.
Keywords
Resilient modulus; Subgrade and subbase; Plate bearing test; Light falling weight test; Compaction control; Dynamic plate bearing test;
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