The performance of flexible and rigid pavements is known to be closely related to properties of the base, subbase, and/or subgrade. However, some recent research studies indicate that the performance predicted by this methodology shows a low sensitivity to the properties of underlying layers and does not always reflect the extent of the anticipated effect/ So the procedures contained in the American Association of Transportation Officials’ (AASHTO’s) design guidance need to be evaluated.
NCHRP Web-Only Document 264: Proposed Enhancements to Pavement ME Design: Improved Consideration of the Influence of Subgrade and Unbound Layers on Pavement Performance proposes and develops enhancements to AASHTO's Pavement ME Design procedures for both flexible and rigid pavements, which will better reflect the influence of subgrade and unbound layers (properties and thicknesses) on the pavement performance.
This NCHRP Web-Only Document is available from TRB at http://onlinepubs.trb.org/onlinepubs/nchrp/nchrp_wod_264.pdf
Merci à nos commanditaires premier
 |
 |
 |
 |
 |
