Comparing Cooling of Warm Mix to Hot Mix Asphalts

Warm mix asphalt (WMA) is increasingly being tried in highway paving in the United States. Apart from environmental benefits, WMA is being considered useful in projects involving long haul distances and late season paving operations due to its material characteristics and the rate of cooling during...

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Main Author: Ahmed, Syed Owais
Format: Others
Published: North Dakota State University 2018
Online Access:https://hdl.handle.net/10365/27631
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spelling ndltd-ndsu.edu-oai-library.ndsu.edu-10365-276312021-09-28T17:11:37Z Comparing Cooling of Warm Mix to Hot Mix Asphalts Ahmed, Syed Owais Warm mix asphalt (WMA) is increasingly being tried in highway paving in the United States. Apart from environmental benefits, WMA is being considered useful in projects involving long haul distances and late season paving operations due to its material characteristics and the rate of cooling during field compaction. This thesis investigates whether WMA cools at a slower rate than hot mix asphalt (HMA) to offer more compaction time. Following an indirect investigative approach, comparative analysis of field observations with software predicted values for two paving projects was carried out. The results indicated that some types of WMA cool at a slower rate than HMA and would allow a longer period of compaction time to achieve the same density as HMA. The findings presented here can be informative to the asphalt paving industry in considering WMA for use in long haul, nighttime, and late season paving. 2018-02-27T15:11:28Z 2018-02-27T15:11:28Z 2015 text/thesis https://hdl.handle.net/10365/27631 NDSU Policy 190.6.2 https://www.ndsu.edu/fileadmin/policy/190.pdf application/pdf North Dakota State University
collection NDLTD
format Others
sources NDLTD
description Warm mix asphalt (WMA) is increasingly being tried in highway paving in the United States. Apart from environmental benefits, WMA is being considered useful in projects involving long haul distances and late season paving operations due to its material characteristics and the rate of cooling during field compaction. This thesis investigates whether WMA cools at a slower rate than hot mix asphalt (HMA) to offer more compaction time. Following an indirect investigative approach, comparative analysis of field observations with software predicted values for two paving projects was carried out. The results indicated that some types of WMA cool at a slower rate than HMA and would allow a longer period of compaction time to achieve the same density as HMA. The findings presented here can be informative to the asphalt paving industry in considering WMA for use in long haul, nighttime, and late season paving.
author Ahmed, Syed Owais
spellingShingle Ahmed, Syed Owais
Comparing Cooling of Warm Mix to Hot Mix Asphalts
author_facet Ahmed, Syed Owais
author_sort Ahmed, Syed Owais
title Comparing Cooling of Warm Mix to Hot Mix Asphalts
title_short Comparing Cooling of Warm Mix to Hot Mix Asphalts
title_full Comparing Cooling of Warm Mix to Hot Mix Asphalts
title_fullStr Comparing Cooling of Warm Mix to Hot Mix Asphalts
title_full_unstemmed Comparing Cooling of Warm Mix to Hot Mix Asphalts
title_sort comparing cooling of warm mix to hot mix asphalts
publisher North Dakota State University
publishDate 2018
url https://hdl.handle.net/10365/27631
work_keys_str_mv AT ahmedsyedowais comparingcoolingofwarmmixtohotmixasphalts
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