||Taking environmental protection,economics,enery recycing into consideration,RAP is the material which be used in the future.|
According to the proposedstrategy,RAP will be accepted as a gerenal paving material to be used on most pavement in 1999.The differences between recycled and traditional hotmix asphalt pavements are highly regarded by engineers.This study made thelong-term observation on two test roads with recycled hot mix asphalt,one is country road NO.110(from ok+000 to 1k+200),the other is provincial roadNO.15(from 23k+900 to 24k+500. This study use Falling Weight Deflectometer(FWD) on the two test roads,and ran two backcalculation programs(MODULUS,EVERCALC).
This study analyzedthe elastic modulus of each layer by means of two backcalculation programs.The study analyzed the elastic modulus of each layer by means of two backcalculation progroms.
The errors between backcalculation elastic modulus and laboratory test is approximate 25%.