Investigation on Smoke Suppression Mechanism of Hydrated Lime in Asphalt Combustion
In this study, cone calorimeter and thermogravimetric analyses were used to simulate the asphalt combustion process under the conditions of fire radiation and programmed temperature increase. The gaseous compositions and release rules were analyzed by infrared spectroscopy to investigate the influen...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2018/9585728 |
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| _version_ | 1832548955975581696 |
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| author | Kai Zhu Yunhe Wang Qi Zhou Daquan Tang Lingzhu Gu Ke Wu |
| author_facet | Kai Zhu Yunhe Wang Qi Zhou Daquan Tang Lingzhu Gu Ke Wu |
| author_sort | Kai Zhu |
| collection | DOAJ |
| description | In this study, cone calorimeter and thermogravimetric analyses were used to simulate the asphalt combustion process under the conditions of fire radiation and programmed temperature increase. The gaseous compositions and release rules were analyzed by infrared spectroscopy to investigate the influence of hydrated lime on the smoke suppression mechanism in the asphalt combustion process. The experimental results show that hydrated lime can promote the asphalt mastic surface to form a barrier layer during the combustion process. This barrier layer can reduce the burning intensity of asphalt. Although the compositions of gaseous products do not change much, the rates of CO production and smoke release are decreased. In addition, hydrated lime is alkaline and can thus neutralize acidic gases such as SO2 and reduce the toxicity of gaseous products. With the addition of 40 wt.% hydrated lime, the total smoke release and the CO release rate both decrease by more than 20% relative to the addition of the same amount of limestone fillers and decrease by more than 10% relative to the addition of the same amount of magnesium hydroxide flame retardant. |
| format | Article |
| id | doaj-art-746b1f1d04744b23937b815b5d8b6e65 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-746b1f1d04744b23937b815b5d8b6e652025-02-03T06:12:37ZengWileyJournal of Chemistry2090-90632090-90712018-01-01201810.1155/2018/95857289585728Investigation on Smoke Suppression Mechanism of Hydrated Lime in Asphalt CombustionKai Zhu0Yunhe Wang1Qi Zhou2Daquan Tang3Lingzhu Gu4Ke Wu5College of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, ChinaCollege of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, ChinaWenzhou Traffic Quality Supervision Bureau, Wenzhou 325000, ChinaCollege of Quality and Safety Engineering, China Jiliang University, Hangzhou 310018, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaCollege of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, ChinaIn this study, cone calorimeter and thermogravimetric analyses were used to simulate the asphalt combustion process under the conditions of fire radiation and programmed temperature increase. The gaseous compositions and release rules were analyzed by infrared spectroscopy to investigate the influence of hydrated lime on the smoke suppression mechanism in the asphalt combustion process. The experimental results show that hydrated lime can promote the asphalt mastic surface to form a barrier layer during the combustion process. This barrier layer can reduce the burning intensity of asphalt. Although the compositions of gaseous products do not change much, the rates of CO production and smoke release are decreased. In addition, hydrated lime is alkaline and can thus neutralize acidic gases such as SO2 and reduce the toxicity of gaseous products. With the addition of 40 wt.% hydrated lime, the total smoke release and the CO release rate both decrease by more than 20% relative to the addition of the same amount of limestone fillers and decrease by more than 10% relative to the addition of the same amount of magnesium hydroxide flame retardant.http://dx.doi.org/10.1155/2018/9585728 |
| spellingShingle | Kai Zhu Yunhe Wang Qi Zhou Daquan Tang Lingzhu Gu Ke Wu Investigation on Smoke Suppression Mechanism of Hydrated Lime in Asphalt Combustion Journal of Chemistry |
| title | Investigation on Smoke Suppression Mechanism of Hydrated Lime in Asphalt Combustion |
| title_full | Investigation on Smoke Suppression Mechanism of Hydrated Lime in Asphalt Combustion |
| title_fullStr | Investigation on Smoke Suppression Mechanism of Hydrated Lime in Asphalt Combustion |
| title_full_unstemmed | Investigation on Smoke Suppression Mechanism of Hydrated Lime in Asphalt Combustion |
| title_short | Investigation on Smoke Suppression Mechanism of Hydrated Lime in Asphalt Combustion |
| title_sort | investigation on smoke suppression mechanism of hydrated lime in asphalt combustion |
| url | http://dx.doi.org/10.1155/2018/9585728 |
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