... of the pavement. For the backcalculation of equivalent full-depth asphalt concrete (AC) thickness and subgrade modulus, these deflections were matched with FWD deflections from major roads in Miyazaki Prefecture, Japan. Temperature influence on Young's modulus of AC was also considered. Results were then compared...

... and subgrade layers were backcalculated using AASHTO recommended procedures. The seasonal variation in subgrade modulus was compared with measured changes in subgrade temperature and moisture content. The observed variability in seasonal moduli estimates was used to support a generalized model for estimating...

... to monitor the stiffness of the entire thickness directly during the subgrade preparation. subgrade modulus resilient modulus soil compaction QC/QA pavement performance in-situ testing Shad M. Sargand, 1Teruhisa Masada,2Daniel L. Wasniak3 Variability of Initial Subgrade Modulus at Ohio SHRP...

... One of the major problems in the evaluation of concrete pavement systems is the accurate determination of pavement parameters such as elastic modulus of concrete, subgrade modulus, and edge and joint stiffnesses. One of the ways to determine these parameters is by matching a measured deflection...

... and the behavioral thickness of the existing pavement. pavements bituminous cements highways asphaltic pavements overlay designs deflections deflection bowl structural condition nondestructive testing pavement evaluation subgrade modulus asphaltic concrete modulus equivalent axleloads Robert C...

... Although the horizontal subgrade modulus plays a significant role in problems dealing with lateral-load carrying capacity of piles, a rather wide range of values is available in literature depending upon the equation, chart, or table used to obtain the modulus. This task is further complicated...

... is a function of the magnitude and position of load application (it decreases with increasing soil stress). For cohesionless soils, increases in soil density caused by driving displacement piles apparently increase the horizontal subgrade reaction. lateral loads piles timber subgrade modulus full...