ABSTRACT

The surface pavement infiltration is one of the main routes for the water to enter into a pavement structure. This infiltration must be measured since it produces damage to the pavement surface and the soil layers of the pavement. To measure the surface infiltration rates of pavements, a field infiltrometer was designed and instrumented. Using this equipment, several in-situ tests were conducted on both low and high traffic roads in Mexico. Because most of the water is believed to enter the pavement through the surface cracks, much of the testing is focused on cracked pavement surfaces. Nonetheless, tests were also conducted on uncracked surfaces and on pavements with open-graded asphalt courses to observe the variation of the infiltration rates regarding the type of pavement. To characterise the cracking, a computational program was developed to measure the cracking extension of the testing site using image processing techniques. Lastly, the results of all the in-situ testing were analysed carefully and some remarks about the utility of the equipment are presented.

摘要

路面入渗是水进入路面结构的主要途径之一。必须测量这种渗透，因为它会对路面和路面的土壤层造成损害。为了测量路面的表面入渗率，设计并配备了现场入渗仪。使用该设备，在墨西哥的低交通和高交通道路上进行了多次现场测试。因为大部分水被认为是通过表面裂缝进入路面的，所以大部分测试都集中在有裂缝的路面上。尽管如此，还在未开裂的表面和具有开放级配沥青层的路面上进行了测试，以观察渗透率随路面类型的变化。为了表征开裂，开发了一个计算程序，以使用图像处理技术测量测试站点的开裂扩展。最后，对所有现场测试的结果进行了仔细分析，并对设备的实用性提出了一些意见。