Title

A Stochastic Optimization Approach For The Selection Of Reflective Cracking Mitigation Techniques

Keywords

Exploratory modeling and analysis; Hot mix asphalt; Life cycle cost; Multi criteria decision making; Reflective cracking mitigation method

Abstract

Purpose: In Hot Mix Asphalt (HMA) overlays, the existing cracks in the underlying pavements can propagate upward to the new added overlay and may cause Reflective Cracks (RC). These cracks allow water infiltration to the underlying layers and causes further moisture damage as well as weakening the unbound layers. Over the years, several methods have been developed for mitigating the RCs. This study aims to investigate the current reflective cracking mitigation methods and develop a methodology for the selection of appropriate mitigation technique. The developed model is then applied to a case study in the state of Florida. Method: To accomplish this goal, a nationwide literature review was conducted to better understand the current in practice methods in the United States. Moreover, a life cycle cost analysis (LCCA) in five different road types was performed to find the annuity of roadway rehabilitation for each of the mitigation methods. The uncertainty in the LCCA results is represented using Exploratory Modeling and Analysis (EMA) method. Then through a Multi Criteria Decision Making (MCDM) model, a stochastic optimization model was developed to find the appropriate reflective cracking mitigation solution under Florida's climate and road conditions, based on different cost and performance weights. Results: Based on the available data for the state of Florida, the LCCA results indicate that the annuity of maintaining the roadway with Fabrics and ISAC are lower compared to other methods. However, the results of stochastic optimization model reveal that while looking at the performance and cost at the same time, different methods would be more feasible. For instance, while the cost of the used method does not matter at all and only performance matters, STRATA® is more probable to be the appropriate mitigation technique. The findings of this research are critical for decision makers to better understand the most cost-effective mitigation technique in different conditions.

Publication Date

11-1-2014

Publication Title

Transportation Research Part A: Policy and Practice

Volume

69

Number of Pages

367-378

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.tra.2014.09.006

Socpus ID

84907954728 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84907954728

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