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CUMULATIVE CHANGES IN RIGID PAVEMENTS WITH
EFFECT OF PAVEMENT CONDITION ON DYNAMIC
SERVOSEISMIC METHOD OF MEASURING ROAD PROFILE
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AASHO Road Test accelerometer actuator cylinder actuator ram amplitude band of normal block diagram built-in roughness Bureau of Public changes in rigid Class 2 pavements concrete pavement cracking cumulative change damping ratio developed device DOUBLE INTEGRATION dynamic force elevation measurements extremely rough frost displacement Harmonic analysis high-pass filter Highway Department Highway Research Board Illinois Division Illinois roadometer increase in roughness indices input lane of Class legal axle loads MEASURED ROAD PROFILE ment Milford Proving Ground normal behavior North-South Straightaway obtained passing lane pave PAVEMENT CLASSIFICATION pavement condition pavement design pavement performance study pavement profiles pavement roughness percent power spectrum curve profile survey profilometer projects Proving Ground Public Roads rated as Class recording reference platform ride simulator riding quality rigid pavements roughness index shown in Figure soil subgrade traffic lane trailer trunkline system variation vehicle characteristic vehicle velocity vertical displacement WAVE LENGTH-FEET Figure wave lengths