Enhancing the thermal conductivity of hot-mix asphalt
Conductive hot-mix asphalt is recommended for enhancing the solar energy collection performance of an asphalt solar collector. This type of collector consists of embedded tubes with circulating water or air inside pavement construction to generate power. This work intends to shed light on the select...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123022004972 |
| _version_ | 1797978176598573056 |
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| author | Firas A. Abbas Mohammed H. Alhamdo |
| author_facet | Firas A. Abbas Mohammed H. Alhamdo |
| author_sort | Firas A. Abbas |
| collection | DOAJ |
| description | Conductive hot-mix asphalt is recommended for enhancing the solar energy collection performance of an asphalt solar collector. This type of collector consists of embedded tubes with circulating water or air inside pavement construction to generate power. This work intends to shed light on the selection of novel components for the preparation of conductive asphalt mixes. Lee's disc method was used to determine the thermal conductivity of this composite material. A comprehensive examination was conducted to prepare reference and conductive asphalt discs by manufacturing asphalt mixtures in a laboratory specified for this work. New Iraqian natural resource materials, including quartzite sandstones and silica sands, and Iraqian industrial waste materials, such as slag stones, steel wool fibres and metallic waste powder, were employed as conductive components. The results showed that the conductive materials increase the thermal conductivity of the reference asphalt mixture up to 42.75% and 66.65% for quartzite and slag combinations, respectively. Slag aggregates should not be utilized as conductive material in asphalt mixes without increasing the binder ratio. Proportions of 4% and 38% of steel wool fibres and metallic waste powder additives, respectively, were found to produce the optimal results for thermal conductivity enhancement. The air void contents and fracturing ratio of conductive discs were decreased when using conductive novel components, which is an indication of the importance of current findings in improving asphalt mixtures in heat storage and transfer applications. |
| first_indexed | 2024-04-11T05:18:49Z |
| format | Article |
| id | doaj.art-c40e03a32dd945f99f610515cbfcf4b7 |
| institution | Directory Open Access Journal |
| issn | 2590-1230 |
| language | English |
| last_indexed | 2024-04-11T05:18:49Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj.art-c40e03a32dd945f99f610515cbfcf4b72022-12-24T04:56:55ZengElsevierResults in Engineering2590-12302023-03-0117100827Enhancing the thermal conductivity of hot-mix asphaltFiras A. Abbas0Mohammed H. Alhamdo1Ministry of Oil, State Company for Gas Filling and Services, Wassit, Iraq; Mustansiriyah University, Baghdad, Iraq; Corresponding author. Ministry of Oil, State Company for Gas Filling and Services, Wassit, Iraq.Mustansiriyah University, College of Engineering, Mech. Eng. Dept, Baghdad, IraqConductive hot-mix asphalt is recommended for enhancing the solar energy collection performance of an asphalt solar collector. This type of collector consists of embedded tubes with circulating water or air inside pavement construction to generate power. This work intends to shed light on the selection of novel components for the preparation of conductive asphalt mixes. Lee's disc method was used to determine the thermal conductivity of this composite material. A comprehensive examination was conducted to prepare reference and conductive asphalt discs by manufacturing asphalt mixtures in a laboratory specified for this work. New Iraqian natural resource materials, including quartzite sandstones and silica sands, and Iraqian industrial waste materials, such as slag stones, steel wool fibres and metallic waste powder, were employed as conductive components. The results showed that the conductive materials increase the thermal conductivity of the reference asphalt mixture up to 42.75% and 66.65% for quartzite and slag combinations, respectively. Slag aggregates should not be utilized as conductive material in asphalt mixes without increasing the binder ratio. Proportions of 4% and 38% of steel wool fibres and metallic waste powder additives, respectively, were found to produce the optimal results for thermal conductivity enhancement. The air void contents and fracturing ratio of conductive discs were decreased when using conductive novel components, which is an indication of the importance of current findings in improving asphalt mixtures in heat storage and transfer applications.http://www.sciencedirect.com/science/article/pii/S2590123022004972Conductive hot-mix asphaltThermal conductivityQuartzite and slag aggregatesSteel wool fibresMetallic powderAsphalt solar collector |
| spellingShingle | Firas A. Abbas Mohammed H. Alhamdo Enhancing the thermal conductivity of hot-mix asphalt Results in Engineering Conductive hot-mix asphalt Thermal conductivity Quartzite and slag aggregates Steel wool fibres Metallic powder Asphalt solar collector |
| title | Enhancing the thermal conductivity of hot-mix asphalt |
| title_full | Enhancing the thermal conductivity of hot-mix asphalt |
| title_fullStr | Enhancing the thermal conductivity of hot-mix asphalt |
| title_full_unstemmed | Enhancing the thermal conductivity of hot-mix asphalt |
| title_short | Enhancing the thermal conductivity of hot-mix asphalt |
| title_sort | enhancing the thermal conductivity of hot mix asphalt |
| topic | Conductive hot-mix asphalt Thermal conductivity Quartzite and slag aggregates Steel wool fibres Metallic powder Asphalt solar collector |
| url | http://www.sciencedirect.com/science/article/pii/S2590123022004972 |
| work_keys_str_mv | AT firasaabbas enhancingthethermalconductivityofhotmixasphalt AT mohammedhalhamdo enhancingthethermalconductivityofhotmixasphalt |