Subgrade Resilient Modulus Of Factors And Their Correlation

In various area in China, through doing a series of relevant experiment to representative soil and analyzing relevant material, this paper think that the main effect element of resilient modulus of pavement subgrade is water content and compaction degree. We found that water content is the most marked in the two factors and the intimate correlation exists in resilient modulus, water content and compaction degree.The below fruit is obtained by the study: Tests outside and interior has been done, and the relationship styles with the different soil about resilient modulus of pavement subgrade, water content and compaction degree were got;The relationship styles with various area of representative soil about the resilient modulus and resilient deflection; The correlation of resilient modulus and CBR was analyzed. The relationship styles between outside resilient modulus and outside CBR were proposed. The relationship styles between outside resilient modulus and inside CBR were suggested. The relationship styles between inside resilient modulus and inside CBR were advanced. The correlation about the resilient modulus in various area and FWD was discussed. The conclusion is that resilient modulus and FWD shows their good correlation. FWD, one new measure method, can be used to measure road strength. Through observing on the spot, we have obtained resilient modulus of pavement subgrade and water content of roadbed soil with changing the law one year of time; The resilient deflection on pavement subgrade has been carried on research, influences coefficient according to season has been put forward to confirm the control about the resilient deflection during pavement subgrade building. The standard about the resilient deflection on the course of pavement subgrade building also has been recommended.