Skip to main content

OPENING-MODE CRACKING IN ASPHALTPAVEMENTS: CRACK INITIATION AND SATURATION

<p>This paper investigates the crack initiation and saturation for opening-mode cracking. Using elastic governing equations and a weak form stress boundary condition, we derive an explicit solution of elastic fields in the surface course and obtain the energy release rate, so that opening-mode cracking initiation can be determined by fracture energy criterion. Interestingly, the longitudinal stress between such cracks along the surface undergoes a transition from tensile to compressive with increasing applied tensile loading, which implies crack saturation.

Comparative Evaluation of Deflection and Wave Propagation Nondestructive Testing Methods for Pavements: Implications for Implementation at State and Local Levels (Excerpts)

<p>In New York City, as in other highly urbanized areas, several factors make it too difficult to apply pavement management systems methodology in the traditional way. Two of those factors are: underground utilities and utility cuts; together, they are the two most significant life-limiting factors for NYC pavements. Non-Destructive testing (NDT) techniques such as the Falling Weight Deflectometer (FWD) have been successfully used to evaluate the conditions of rural pavements.

Comparative Evaluation of Deflection and Wave Propagation NDT Methods Pavements-brief

<p>In New York City, as in other highly urbanized areas, a number of factors make it too difficult to apply pavement management systems methodology in the traditional way: the existence of underground utilities and utility cuts. The potential of future patching which affects pavement performance. The fact that more than 70 % of NYC pavements are composite pavements, which are not suited for Non-Destructive Testing (NDT) analysis techniques. The objective of this project is to develop a NDTbased framework to effectively manage urban pavements at the project level.

Cement Hydration and Heat Exchange Modeling for Curing Process of Concrete Pavements and Bridge Decks at Early Stages

This report, written by Gary S. Wojcik and David R. Fitzjarrald of the University of Albany, describes the field campaign and subsequent data analysis for the Route 30 bridge over the South Chuctanunda Creek in Montgomery County, NY. The two purposes of this work were 1.) to make more detailed measurements of the bridge environment than we have done in the past to better understand the energy budget of a curing concrete bridge and 2.) to provide atmospheric boundary conditions to a model of curing concrete.

Cement Hydration and Heat Exchange Modeling for Curing Process of Concrete Pavements and Bridge Decks at Early Stages-Brief

This project involved a field campaign and subsequent
data analysis for the Route 30 bridge over the South
Chuctanunda Creek in Montgomery County, NY. The
two purposes of this work were: 1) to make more
detailed measurements of the bridge environment than
we have done in the past to better understand the
energy budget of a curing concrete bridge and 2) to
provide atmospheric boundary conditions to a model
of curing concrete.
New measurements included direct sensible and latent

Bridge Appurtenances

This report presents the findings and recommendations for the following NJDOT?s technology transfer
projects:
Energy Absorbing Fender Systems
Existing bridge fender protective systems technology, used by other states and countries are grouped into six
main categories: 1) Pile supported; 2) Retractable; 3) Rubber; 4) Gravity; 5) Hydraulic/pneumatic; and 6)
Floating systems. A protection system composed of hardcore composite pile dolphins, composite tubular

Subscribe to Materials