Evaluation and Performance of Hydrated Lime and Limestone Powder in Porous Asphalt
Evaluation and Performance of Hydrated Lime and Limestone Powder in Porous Asphalt
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DOI：
10.3166/rmpd.9.651-664
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发表时间：
2008-10-01
影响因子：
3.7
通讯作者：
Esfahani, Mohsen Aboutatebi
中科院分区：
文献类型：
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作者：
Ameri, Mahmoud;Esfahani, Mohsen Aboutatebi
排水性沥青混合料或开放式级配摩擦层(OGFC)具有许多优点，因此得到了广泛的应用和发展。OGFC通过允许水通过其多孔结构排出，改善了湿路面的摩擦力、表面反射、交通噪音、潮湿天气驾驶条件，并减少了水在空气中的滑行、飞溅和喷洒(起到减少喷雾表面的作用)。为了实现上述优点，这种混合物在总混合料(VTM)中必须有很大的空隙。较大的VTM降低了路面混合料的耐久性，并容易使其松散。在排水性沥青中使用少量水化沥青是许多公路机构为了增加混合料强度以及改善沥青路面的耐久性而接受的做法。本研究的目的是评估石灰处理的OGFC在多次冻拉调湿前后的力学性能，并表明消石灰比石灰石粉更能改善混合料的稳定性和耐久性。
Porous asphalt mixture or Open Graded Friction Course (OGFC) has many benefits that resulted in its extensive use and development. OGFC improves the friction of a wet pavement, surface reflection, traffic noise, wet weather driving conditions by allowing the water to drain through its porous structure and reduces the hydroplaning, the splashing and spraying of water in the air (acts as spray reducing surfaces). For achieving the advantages mentioned above, this mixture must have big Voids in Total Mix (VTM). The big VTM reduces durability of the paving mixtures and prone them to raveling. The use of hydrated little in porous asphalt is an accepted practice for many highway agencies in order to increase mixture strength as well as to improve durability of asphalt pavements. The goal of this study is to evaluate the mechanical properties of lime treated OGFC before and after multiple cycles of freeze-draw moisture conditioning and also to show that hydrated lime improves stability and durability of the mixture more than limestone powder.