نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری مهندسی عمران-راه و ترابری، دانشگاه صنعتی نوشیروانی بابل، مازندران، ایران.
2 دانشیار دانشکده مهندسی عمران، دانشگاه صنعتی نوشیروانی بابل، مازندران، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Microsurfacing is a preventive maintenance method for the flexile pavements. The mix design of microsurfacing should be conducted considering the climate conditions and the rate of setting during the day and night. In this research, the effect of water, cement and asphalt emulsion contents on the mix-design and performance of microsurfacing mixtures in different environmental conditions is investigated. The results showed that the initial water and cement contents have a significant effect on the setting and curing times of the microsurfacing mixtures. The cohesion test results showed that using 0.5 to 1 percent of cement more than the optimal amount reduces the processing time and accelerates the setting process of the mixtures placed in under the shade. The use of primary water and cement for 0.5% more than the optimal amount ensures the efficiency of the mixture and increases torsional strength of the mixtures under the direct sun radiation. Therefore, the mix-design need to be adjusted at different condition of during the day and night to achieve a better performance of microsurfacing mixtures.
کلیدواژه‌ها [English]
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