WASTEWATER SLUDGE ASH IN THE PRODUCTION OF A NOVEL COLD MIX ASPHALT (CMA): DURABILITY, AGING AND TOXICITY CHARACTERISTICS
New Sustainable with no CO2 emission cold mix asphalt (CMA) for road and highways surfacing is successfully developed from wastewater sludge ash normally sent to landfills. The Paper reports; durability in terms of water sensitivity, aging and contamination levels of heavy metals of the new develope...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Faculty of Engineering, University of Kufa
2024-01-01
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| Series: | Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ |
| Subjects: | |
| Online Access: | https://journal.uokufa.edu.iq/index.php/kje/article/view/13784 |
| _version_ | 1797327047358414848 |
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| author | Hassan Al Nageim Aaraf Al-Khuzaie Linda Seton Jennifer Croft Jonathan Drake |
| author_facet | Hassan Al Nageim Aaraf Al-Khuzaie Linda Seton Jennifer Croft Jonathan Drake |
| author_sort | Hassan Al Nageim |
| collection | DOAJ |
| description | New Sustainable with no CO2 emission cold mix asphalt (CMA) for road and highways surfacing is successfully developed from wastewater sludge ash normally sent to landfills. The Paper reports; durability in terms of water sensitivity, aging and contamination levels of heavy metals of the new developed novel CMA containing upgraded fly and bottom ash secondary cementitious materials from United Utilities fly and bottom ashes. Road engineers currently restricted the use of conventional CMA containing conventional limestone fillers (LF) for use in walkways and light trafficked roads only, as these mixtures needs from 2 to 24 months for curing. Conventional CMA mixtures also have high voidage contents and thus low traffic bearing capacity. The durability of these mixes is low especially in the UK and European countries where the climate is predominantly wet and cold.
In Germany and France, ordinary Portland cement (OPC) replaced the filler used in traditional CMA. Although this allows the new CMA to be used in roads for light and heavy trafficked loads. The materials are not environmentally friendly, as one tone of cement releases approximately one tone of CO2 emission during their manufacturing process.
The results of the new developed CMA are satisfying the British and European codes of practices requirements. The new novel mixtures are also; highly cost-effective compared with the use of Hot Mix Asphalt (HMA), has no CO2 emission during mixing construction, and has no health and safety issues compared with the HMA manufacturing and application process. |
| first_indexed | 2024-03-08T06:32:53Z |
| format | Article |
| id | doaj.art-ebbaa64201bb41078ad8f1fd931047ac |
| institution | Directory Open Access Journal |
| issn | 2071-5528 2523-0018 |
| language | English |
| last_indexed | 2024-03-08T06:32:53Z |
| publishDate | 2024-01-01 |
| publisher | Faculty of Engineering, University of Kufa |
| record_format | Article |
| series | Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ |
| spelling | doaj.art-ebbaa64201bb41078ad8f1fd931047ac2024-02-03T11:10:26ZengFaculty of Engineering, University of KufaMağallaẗ Al-kūfaẗ Al-handasiyyaẗ2071-55282523-00182024-01-0115114716210.30572/2018/kje/150109WASTEWATER SLUDGE ASH IN THE PRODUCTION OF A NOVEL COLD MIX ASPHALT (CMA): DURABILITY, AGING AND TOXICITY CHARACTERISTICSHassan Al Nageim0https://orcid.org/0000-0001-7122-4202Aaraf Al-Khuzaie1Linda Seton2Jennifer Croft3Jonathan Drake4School of Civil Engineering & Built Environment, Liverpool John Moores University [LJMU], UK.Civil Engineering Department, LJMU, Liverpool, UKSchool of Chemical and Biomolecular Sciences, LJMU, Liverpool, UK.United Utilities Water Limited, Warrington, UK.United Utilities Water Limited, Warrington, UK.New Sustainable with no CO2 emission cold mix asphalt (CMA) for road and highways surfacing is successfully developed from wastewater sludge ash normally sent to landfills. The Paper reports; durability in terms of water sensitivity, aging and contamination levels of heavy metals of the new developed novel CMA containing upgraded fly and bottom ash secondary cementitious materials from United Utilities fly and bottom ashes. Road engineers currently restricted the use of conventional CMA containing conventional limestone fillers (LF) for use in walkways and light trafficked roads only, as these mixtures needs from 2 to 24 months for curing. Conventional CMA mixtures also have high voidage contents and thus low traffic bearing capacity. The durability of these mixes is low especially in the UK and European countries where the climate is predominantly wet and cold. In Germany and France, ordinary Portland cement (OPC) replaced the filler used in traditional CMA. Although this allows the new CMA to be used in roads for light and heavy trafficked loads. The materials are not environmentally friendly, as one tone of cement releases approximately one tone of CO2 emission during their manufacturing process. The results of the new developed CMA are satisfying the British and European codes of practices requirements. The new novel mixtures are also; highly cost-effective compared with the use of Hot Mix Asphalt (HMA), has no CO2 emission during mixing construction, and has no health and safety issues compared with the HMA manufacturing and application process.https://journal.uokufa.edu.iq/index.php/kje/article/view/13784ageing of asphaltcold mix asphalthigh metal contaminationtoxicity characteristicswater sensitivity |
| spellingShingle | Hassan Al Nageim Aaraf Al-Khuzaie Linda Seton Jennifer Croft Jonathan Drake WASTEWATER SLUDGE ASH IN THE PRODUCTION OF A NOVEL COLD MIX ASPHALT (CMA): DURABILITY, AGING AND TOXICITY CHARACTERISTICS Mağallaẗ Al-kūfaẗ Al-handasiyyaẗ ageing of asphalt cold mix asphalt high metal contamination toxicity characteristics water sensitivity |
| title | WASTEWATER SLUDGE ASH IN THE PRODUCTION OF A NOVEL COLD MIX ASPHALT (CMA): DURABILITY, AGING AND TOXICITY CHARACTERISTICS |
| title_full | WASTEWATER SLUDGE ASH IN THE PRODUCTION OF A NOVEL COLD MIX ASPHALT (CMA): DURABILITY, AGING AND TOXICITY CHARACTERISTICS |
| title_fullStr | WASTEWATER SLUDGE ASH IN THE PRODUCTION OF A NOVEL COLD MIX ASPHALT (CMA): DURABILITY, AGING AND TOXICITY CHARACTERISTICS |
| title_full_unstemmed | WASTEWATER SLUDGE ASH IN THE PRODUCTION OF A NOVEL COLD MIX ASPHALT (CMA): DURABILITY, AGING AND TOXICITY CHARACTERISTICS |
| title_short | WASTEWATER SLUDGE ASH IN THE PRODUCTION OF A NOVEL COLD MIX ASPHALT (CMA): DURABILITY, AGING AND TOXICITY CHARACTERISTICS |
| title_sort | wastewater sludge ash in the production of a novel cold mix asphalt cma durability aging and toxicity characteristics |
| topic | ageing of asphalt cold mix asphalt high metal contamination toxicity characteristics water sensitivity |
| url | https://journal.uokufa.edu.iq/index.php/kje/article/view/13784 |
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