Pavement Preservation Journal - Spring 2010 - (Page 37)

Pavement Distress Guidelines Improve Ontario Management T he Centre for Pavement and Transportation Technology (CPATT) at the University of Waterloo and the Ministry of Transportation of Ontario (MTO) have been studying during the last four years the suitability of applying digital technologies in the province, and are currently reviewing MTO existing pavement distress practices. The results are described in a paper, Development and Validation of Distress Guidelines and Condition Rating to Improve Network Management in the Province of Ontario, by Alondra Chamorro, M.Sc., Ing. Civil., doctoral candidate, University of Waterloo, Susan L. Tighe, Ph.D., P.Eng, Research Chair in Pavement and Infrastructure Management, Department of Civil Engineering, University of Waterloo, Li Ningyuan Ph.D, P.Eng., senior pavement management engineer, and Tom Kazmierowski, P.Eng. senior manager, Materials Engineering and Research Office, Ministry of Transportation of Ontario. A first study (Phase 1) finalized in 2006 evaluated the performance of pavement survey methods available at the time, and the feasibility of replacing and supplementing manual data collection by automated/semiautomated digital collection techniques for network level use. The study recommended that MTO should define guidelines and particularly use of quality assurance for surveying pavement distresses at network level using automated/semiautomated technologies. A second study (Phase 2) was developed in 2007, given the recommendations from the first study. The main objective of the project involved the development of pavement distress guidelines and a Distress Manifestation Index at Network Level (DMINL) for the use of automated collection technologies and semi-automated distress analysis. After reviewing the state-of-the-practice and state-of-the-art, network level distress guidelines were developed for the evaluation of distress type, density and severity using automated collection technologies and semiautomated distress analysis. The Distress Manifestation Index at Network Level (DMINL) was defined considering the outcomes of the network level guidelines and the previous study. Both, guidelines and DMINL were validated considering data collected in the first study. Finally recommendations were made for the application of distress guidelines and DMINL. Quality Control and Quality Assurance (QC/QA) recommendations were considered for the automated/ semi-automated evaluation of road networks. VALIDATION IN THE FIELD A third study (Phase 3) has been recently developed to validate and implement in the field MTO Network Level Distress Guidelines and Distress Manifestation Index for Network Level evaluations (DMINL) considering the use of automated technologies. The study considered the methodology presented in Figure 1. For the calibration and validation of DMINL equations, an experimental factorial was defined considering all distress types and severity levels included by the network level distress guidelines defined in Phase 2. Test sections fulfilling this factorial were selected in the Equation No. 1 Equation No. 1 Fig. 2: Weighting factors for distress type Fig. 1: Study methodology Spring 2010 pavement preservation journal

Table of Contents for the Digital Edition of Pavement Preservation Journal - Spring 2010

Pavement Preservation Journal - Spring 2010
Contents
President’s Message
Conference Will Bring World of Pavement Preservation to Single Location
Let Pavement Preservation Be Part of SurfaceTransportation Reauthorization in 2010
Friction Restoration + Pavement Rejuvenation = Superior Surface
Town Controls Potholes, Costs with All-in-One Patch Truck
First Woman President of IGGA No Stranger to Grooving, Grinding
Texas Lassos PG, Rubber, Warm Mix Asphalts
Pavement Distress Guidelines Improve Ontario Management
Synergy Between Northeast Partnership, Pavement Managers
Experts Confront Dispute on Concrete Joint Sealing
High-Tech Repairs Give I-70 Viaduct New Life
Calendar of Events
Advertisers.com
Index to Advertisers

Pavement Preservation Journal - Spring 2010

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