Thermal segregation of asphalt material in road repair
| العنوان: | Thermal segregation of asphalt material in road repair |
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| المؤلفون: | DA Chamberlain, Juliana Byzyka, Mahbubur Rahman |
| المصدر: | Journal of Traffic and Transportation Engineering (English ed. Online), Vol 4, Iss 4, Pp 360-371 (2017) Journal of Traffic and Transportation Engineering |
| بيانات النشر: | KeAi Communications Co., Ltd., 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Engineering, Thermal segregation, 0211 other engineering and technologies, Compaction, Patch repair, Transportation, 02 engineering and technology, Thermography method, Pothole, Premature failure, Asphalt pavement, 021105 building & construction, 0502 economics and business, Forensic engineering, Geotechnical engineering, Civil and Structural Engineering, 050210 logistics & transportation, Cold spot, business.industry, 05 social sciences, lcsh:TA1001-1280, Repair site, Durability, Hot mix asphalt, Asphalt, Environmental science, lcsh:Transportation engineering, business |
| الوصف: | This paper presents results from a field study of asphaltic pavement patching operations performed by three different contractors working in a total of ten sites. It forms part of an ongoing research programme towards improving the performance of pothole repairs. Thermal imaging technology was used to record temperatures of the patching material throughout the entire exercise, from the stage of material collection, through transportation to repair site, patch forming, and compaction. Practical complications occurring during patch repairs were also identified. It was found that depending on the weather conditions, duration of the travel and poor insulation of the transported hot asphalt mix, its temperature can drop as high as 116.6 °C over the period that the reinstatement team travel to the site and prepare the patch. This impacting is on the durability and performance of the executed repairs. Cold spots on the asphalt mat and temperature differentials between the new hot-fill asphalt mix and existing pavement were also identified as poorly compacted areas that were prone to premature failure. For example, over the five-minute period, the temperature at one point reduced by 33% whereas the temperatures of nearby areas decreased by 65% and 71%. A return visit to the repair sites, three months later, revealed that locations where thermal segregation was noted, during the patching operation, had failed prematurely. |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 2095-7564 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::720ba54cc2911e0f7cf1e823a78759db http://www.sciencedirect.com/science/article/pii/S209575641630215X |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....720ba54cc2911e0f7cf1e823a78759db |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 20957564 |
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