01473451

Component

The objective of this paper is to compare the stress based load transfer efficiency, (LTE(S)), of transverse doweled joints and transverse isolated transition joints (reinforced and thickened edge) for six different types of pavement structures. The six pavement structures include three PCC layers with modulus of ruptures (MOR) of 500 psi (low), 750 psi (medium), and 1000 psi (high). Each of these PCC layers are constructed over two different stabilized bases, asphalt and concrete (Econocrete). LTE(S) was calculated based on strains recorded under a moving wheel load at the National Airport Pavement Testing Facility (NAPTF). Both dowel joints and isolation transition joints had lower LTE(S) values on the Econocrete base. Overall, doweled joints deteriorated throughout testing, with LTE(S) reducing as trafficking progressed. Transition joints, which are designed to allow no load transfer, exhibited higher variability throughout testing and the LTE(S) for transition joints remained, on average, lower than the LTE(S) of doweled joints. In addition, dual gage and single gage analysis methods are compared against each other for the same passes. Single gage analysis compared well with dual gage analysis, having results that were within 6% of dual gage results. Both dowel joints and isolation transition joints were analyzed using dual gage analysis methods, but only dowel joints were also analyzed using single gage analysis.

This paper was sponsored by TRB committee AV070 Aircraft/Airport Compatibility.

01470560

13-0569

English

21p

2013

Transportation Research Board 92nd Annual Meeting

Digital/other

Figures; References; Tables

Airport runways; Laboratory tests; Load transfer; Pavement joints; Pavement performance; Stresses

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

Transportation Research Board Annual Meeting 2013 Paper #13-0569

TRIS, TRB, ATRI

Feb 5 2013 12:14PM