云南高粘沥青OGFC混合料路用性能研究

Study on Road Performance of Yunnan High-viscosity Asphalt OGFC Mixtures

文章分别以云南高粘沥青和SK-70~#基质沥青为混合料胶结材料,质地、粒形较好的石灰岩为集料,使用国内外研究成熟的OGFC-10、OGFC-13级配类型制备沥青混合料,并将云南高粘沥青与SK-70~#基质沥青作对比分析,研究了两种不同材料制备的沥青混合料的排水性能、抗滑性能、高温稳定性、低温抗裂性及水稳定性能。试验结果表明,两种胶结材料制备的OGFC沥青混合料的空隙率、排水性能、抗滑性能均满足规范要求;云南高粘沥青混合料高低温性能、水稳定性比普通基质沥青混合料好,更适用于OGFC沥青路面。

With Yunnan high-viscosity asphalt and SK- 70# matrix asphalt respectively as the mixture cement materials,and the limestone with better texture and grain shape as the aggregate,this article prepared the asphalt mixtures by using the OGFC- 10 and OGFC- 13 gradation types with mature foreign and domestic studies, Yunnan high-viscosity asphalt was compared with SK- 70# asphalt, then it studied the drainage performance, anti-skid property, high-temperature stability, low- temperature crack resistance and water stability performance of asphalt mixture prepared by two different materials.The test results showed that the porosity, drainage performance and anti-skid perforrnance of OGFC asphalt mixture prepared by two kinds of cements can meet the requirements of the specificetion~ the high and low-temperature performance and water stability of Yunnan high-viscosity asphalt mixture are better than ordinary matrix asphalt mixture, thus it is more suitable for OGFC asphalt pavement.