Hot-Mix Asphalt Overlay Design Concepts for Rubblized Portland Cement Concrete Pavements

1999 ◽  
Vol 1684 (1) ◽  
pp. 147-155 ◽  
Author(s):  
Marshall R. Thompson
Keyword(s):  
Portland Cement ◽  
Hot Mix Asphalt ◽  
Concrete Pavements ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Design Concepts ◽  
Asphalt Overlay ◽  
Overlay Design

Structural Characterization of Fractured Portland Cement Concrete Pavements in Pennsylvania from Falling Weight Deflectometer Data

2020 ◽  
Vol 2674 (10) ◽  
pp. 781-793
Author(s):  
Luis Ramirez ◽  
Dennis Morian
Keyword(s):  
Portland Cement ◽  
Design Methods ◽  
Concrete Pavements ◽  
Falling Weight Deflectometer ◽  
Portland Cement Concrete ◽  
Cement Concrete ◽  
Structural Capacity ◽  
Fracturing Process ◽  
Overlay Design ◽  
Falling Weight

Hot mix asphalt (HMA) overlays on fractured Portland cement concrete (PCC) is a common rehabilitation alternative used for PCC pavements in Pennsylvania. Several fracture techniques including rubblization, crack and seat (C&S), and break and seat (B&S) have been used for decades to minimize reflective cracking by reducing the effective slab length and, with it, expansion/contraction movement. The design of this type of overlay requires knowledge of the structural capacity of the fractured PCC layer. The AASHTO 93 and Pavement ME design methods are used by the Pennsylvania Department of Transportation (DOT). These methods and the Pennsylvania DOT documentation recommend certain values to characterize the structural capacity of the fractured PCC. However, the guidance envisaged the selection of these values provided by these design methods and the Pennsylvania DOT documentation is limited. The objective of this study is to determine realistic Pennsylvania-specific elastic modulus (EPCC) values and layer coefficients (LC) to characterize the in situ behavior of fractured PCC layer for jointed reinforced concrete pavements (JRCP) and jointed plain concrete pavements (JPCP). To obtain these structural properties, 11 different rehabilitation projects located in Pennsylvania were analyzed using falling weight deflectometer (FWD) data, backcalculation programs, and statistical methods. Based on this analysis, the recommended values of EPCC and LC for C&S overlay design are 360 ksi (kips per square inch) and 0.32, respectively. In the case of B&S overlay design, these values correspond to 400 ksi and 0.34, respectively. The variability of the slab fracturing process and the reduction of the structural capacity caused by fracturing were also analyzed in this investigation.

Measuring As-Constructed Smoothness of Portland Cement Concrete Pavements with Lightweight Profilometers

2001 ◽  
Vol 1764 (1) ◽  
pp. 189-200
Author(s):  
Mahmuda Akhter ◽  
Mustaque Hossain ◽  
Jeffrey Hancock ◽  
John Boyer ◽  
William J. Parcells
Keyword(s):  
Portland Cement ◽  
Concrete Pavements ◽  
Portland Cement Concrete ◽  
Cement Concrete
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