TY - JOUR
T1 - Contextual heat island assessment for pavement preservation
AU - Sen, Sushobhan
AU - Roesler, Jeffery
N1 - This work was supported by the US Department of Transportation (USDOT) through the University Transportation Center for Highway PP (UTCHPP) at Michigan State University [contract number DTR13-G-UTC44]. Gregg Larson of ARA, Inc. and Prof Barry J. Dempsey of the University of Illinois at Urbana-Champaign provided valuable inputs in developing the ILLI-THERM program.
This work was supported by the US Department of Transportation (USDOT) through the University Transportation Center for Highway PP (UTCHPP) at Michigan State University [contract number DTR13-G-UTC44].
PY - 2018/10/3
Y1 - 2018/10/3
N2 - Pavement preservation (PP) is a planned set of construction and material interventions that can extend the pavement’s service life and may also impact sustainability through Heat Island (HI) mitigation. The HI mitigation potential can vary from location-to-location and with time. For agencies to widely adopt the PP, it is necessary to quantify the benefits based on the context of the project. A method to calculate the Global Warming Potential (GWP) for the HI effect was developed and illustrated for four cities in the US: Chicago, Austin, San Diego and Philadelphia, for hypothetical pavements with three preservation options: chip seals, a concrete inlay, and an asphalt concrete inlay. The use phase GWP with respect to HI was estimated for all cases given a 2-, 5-, 7- or 10-year service life. Overall, the HI in the use phase was found to dominate the total GWP relative to the materials and construction phases. The HI GWP savings increase over time, with the 10-year savings being greatest for San Diego using the concrete inlay (22.5 kg CO2-eq/m2) and smallest for Chicago with a chip seal (8.0 kg CO2-eq/m2). The savings were found to increase in areas that have a more pronounced HI and could offset GWP in the other phases. The proposed method allows agencies to estimate HI GWP for a specific preservation strategy, location and service life.
AB - Pavement preservation (PP) is a planned set of construction and material interventions that can extend the pavement’s service life and may also impact sustainability through Heat Island (HI) mitigation. The HI mitigation potential can vary from location-to-location and with time. For agencies to widely adopt the PP, it is necessary to quantify the benefits based on the context of the project. A method to calculate the Global Warming Potential (GWP) for the HI effect was developed and illustrated for four cities in the US: Chicago, Austin, San Diego and Philadelphia, for hypothetical pavements with three preservation options: chip seals, a concrete inlay, and an asphalt concrete inlay. The use phase GWP with respect to HI was estimated for all cases given a 2-, 5-, 7- or 10-year service life. Overall, the HI in the use phase was found to dominate the total GWP relative to the materials and construction phases. The HI GWP savings increase over time, with the 10-year savings being greatest for San Diego using the concrete inlay (22.5 kg CO2-eq/m2) and smallest for Chicago with a chip seal (8.0 kg CO2-eq/m2). The savings were found to increase in areas that have a more pronounced HI and could offset GWP in the other phases. The proposed method allows agencies to estimate HI GWP for a specific preservation strategy, location and service life.
KW - Concrete inlays
KW - FFC
KW - chip seal
KW - context-sensitive LCA
KW - global warming potential
KW - heat island
KW - sustainability
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U2 - 10.1080/10298436.2016.1213842
DO - 10.1080/10298436.2016.1213842
M3 - Article
AN - SCOPUS:84980048053
SN - 1029-8436
VL - 19
SP - 865
EP - 873
JO - International Journal of Pavement Engineering
JF - International Journal of Pavement Engineering
IS - 10
ER -