摘要
沥青是重要的路面构筑材料,而随着“海绵城市”理念的兴起,透水沥青的应用越加广泛和必要。因此,对透水沥青混合料的各类性能进行研究是十分必要的,而目前的研究中多涉及透水沥青的配比设计或是力学特性确定,对其光老化后的渗透性能研究较少。然而,沥青材料的光老化研究极为必要,我国幅员辽阔,南方及高纬度地区紫外线辐射强烈,而紫外线这一容易被忽视的因素往往对沥青材料的性能产生不利影响。首先,对Bumetrizole改性沥青混合料进行紫外线照射处理以模拟其光老化过程,通过变水头渗透试验对紫外线老化后Bumetrizole改性沥青混合料的渗水系数、渗透系数进行研究,并基于Carman-Kozemy方程对其渗透系数进行标定,提Bumetrizole改性沥青混合料紫外老化后的水渗透性能模型。
Asphalt is an important pavement construction material,and with the rise of the“sponge city”concept,the application of permeable asphalt is more extensive and necessary.Therefore,it is necessary to study the various properties of the permeable asphalt mixture.However,the current research mostly involves the design of the permeable asphalt or the determination of the mechanical properties,and the research on the permeability after photoaging is less.However,photoaging of asphalt materials is extremely necessary.China has a vast territory,and ultraviolet radiation is strong in the southern and high latitudes.Ultraviolet rays,which are easily overlooked,often have an adverse effect on the performance of asphalt materials.In this paper,the Bumetrizole modified asphalt mixture was firstly irradiated with ultraviolet light to simulate its photoaging process,and then the water permeability coefficient and permeability coefficient of the Bumetrizole modified asphalt mixture after UV aging were studied through the variable head penetration test,and based on Carman.The Kozemy equation calibrates its permeability coefficient and proposes a model of water permeability after UV aging of Bumetrizole modified asphalt mixture.
作者
吴红翠
WU Hong-cui(School of architectural engineering,Hefei Vocational College of Finance and economics,Hefei 230601,Anhui,China)
出处
《贵阳学院学报（自然科学版）》
2021年第1期104-109,共6页
Journal of Guiyang University：Natural Sciences
