基于PG的黑龙江省沥青路面气候分区与标准的研究

发布时间：2018-03-16 21:09

本文选题：道路工程　切入点：温度换算公式　出处：《公路交通科技》2017年12期 　论文类型：期刊论文

【摘要】：虽然现行规范已经具有了沥青路面气候分区,但实际上PG技术没有得到真正的应用。根据黑龙江省不同地区的气温与路面温度的观测数据,以美国Superpave中的PG技术为基础,对黑龙江省沥青路面PG分区与PG_(m-n)标准进行研究,以此为标准对黑龙江省道路沥青的高低温性能进行评价。研究内容包括:基于SHRP的黑龙江省沥青路面温度换算公式,黑龙江省沥青路面PG分区与PG_(m-n)标准,基于PG系列试验的黑龙江省道路沥青PG性能评定等。研究结果表明,黑龙江省道路沥青基本满足PG_(m-n)技术标准的高温性能要求,但均不满足PG_(m-n)技术标准的低温性能要求。在此基础上,通过对黑龙江省现有道路沥青进行复合改性,研发满足黑龙江省PG_(m-n)标准的道路沥青材料。与针入度系列指标相比,PG系列指标能够更合理地评价道路沥青的高低温性能。黑龙江省沥青路面PG分区与全国的沥青路面气候分区相结合,可以为黑龙江省道路沥青的选用提供具体的PG技术参数。研究认为,PG_(m-n)低温标准的不满足是黑龙江省沥青路面低温开裂的一个理论原因,研究结果对改善黑龙江省道路沥青的低温性能具有一定的理论与实用价值。
[Abstract]:Although the current code already has the climate zoning of asphalt pavement, in fact, PG technology has not been applied. According to the observation data of temperature and pavement temperature in different regions of Heilongjiang Province, the PG technology in Superpave of the United States is the basis. In this paper, the PG partition and PGSP-nn standard of Heilongjiang Province asphalt pavement are studied, and the high and low temperature performance of Heilongjiang province asphalt is evaluated. The research contents include: the conversion formula of asphalt pavement temperature in Heilongjiang Province based on SHRP. The PG partition and PGSM-n standards of asphalt pavement in Heilongjiang Province, and the PG performance evaluation of road asphalt in Heilongjiang Province based on PG series tests, etc. The research results show that the asphalt of Heilongjiang Province basically meets the high temperature performance requirements of the technical standard of PGM-n). However, none of them can meet the low temperature performance requirements of PGD / m-n technical standard. On this basis, the existing road asphalt in Heilongjiang Province is modified by composite modification. Research and development of road asphalt materials that meet the standard of PGD / m-n in Heilongjiang Province. Compared with penetration index series, PG series index can evaluate the high and low temperature performance of road asphalt more reasonably. PG Subarea of Heilongjiang Province Asphalt pavement and Asphalt of the whole country. Road surface climate division combined, It can provide specific PG technical parameters for the selection of asphalt in Heilongjiang Province. It is considered that the unsatisfied low temperature standard of PGS / m -nn is a theoretical reason for the low temperature cracking of asphalt pavement in Heilongjiang Province. The results have certain theoretical and practical value for improving the low temperature performance of road asphalt in Heilongjiang Province.
【作者单位】：东北林业大学土木工程学院;
【基金】：黑龙江省交通运输厅重点项目
【分类号】：U416.217

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