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Asphalt concrete pavement because of its smooth surface , the construction of a high degree of mechanization , simple to maintain , have been widely used in highway, bridge deck and tunnel pavement which . However , due to the production HMA asphalt heated from room temperature to 160 ℃ , the mineral aggregate heated from room temperature to 160 ~ 180 ℃, and then mixing asphalt and mineral aggregate , the HMA after mixing temperature of 150 to 180 ° C, in order to ensure normal paving and rolling . Asphalt heated to such a high temperature, the asphalt will emit a certain amount of smoke gases , these gases include CO, CO2, SO2 . Not only pollute the atmospheric environment and the body's respiratory system to produce a strong stimulus causes the body to produce severe dizziness . Especially in a relatively closed environment construction , asphalt mixture of high-temperature exhaust smoke has brought great challenges to the construction operations , and even a threat to the physical and mental health and life safety of the construction workers . Therefore, the study of smoke suppression modified asphalt has a very positive sense . In this paper, the volatile asphalt smoke lead to the changing characteristics of asphalt quality , developed its own smoke suppression assessment method to determine the two to meet the requirements of the smoke suppression modifier : melamine and pentaerythritol . Test analysis to determine the the smoke suppressant best content and preparation smoke suppression asphalt mixing temperature and optimum mixing time , and the smoke suppressant on the performance of asphalt binders , the analysis shows : Two suppression smoke suppressant and compatibility matrix asphalt better improve the the asphalt temperature sensitivity and high temperature stability , low temperature crack resistance of asphalt produced some negative effects .
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