01474118

Component

For many years, concrete pavement construction, whether new or overlay, has been done with a variety of layer interfaces ranging from strongly cemented having a high degree of shear strength to completely unstabilized having only internal frictional resistance between the individual particles. In this regard, both past and present design methodologies have been limited in their capability to address the bond between the slab and the underlying layers – essentially considering either unbonded or fully bonded conditions for design purposes. However, this limitation ignores a wide range of partially bonded conditions that can exist between these two limits that may consist of a variety of combinations of different levels of friction and adhesion. For most instances of design, unbonded conditions are principally hypothetical where qualification of the amount of adhesive strength and frictional restraint that develops along the interfacial between the slab and the underlying layer is key to the characterization of slab behavior resulting for varying degrees of partial bond. This paper addresses a framework to model the effects of the concrete pavement slab/subbase interface for design purposes relative to these and other factors as they may pertain to the prediction of short and long term performance.

This paper was sponsored by TRB committee AFD50 Rigid Pavement Design.

01470560

13-4607

English

26p

2013

Transportation Research Board 92nd Annual Meeting

Digital/other

Figures; References; Tables

Bond strength (Materials); Calibration; Mathematical models; Pavement design; Slabs; Subbase (Pavements)

Design; Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Transportation Research Board Annual Meeting 2013 Paper #13-4607

TRIS, TRB, ATRI

Feb 5 2013 12:53PM