IN T R O D U C T IO N T he In d iana D epartm ent of Highways has em barked upon es­ tab lish ing a Pavem ent M anagem ent System (PMS). As a p a rt of this, the Jo in t H ighway R esearch Project has had an on-going research p ro ­ ject for the past several years dealing with m ethods of m easuring pave­ m ent condition in Ind iana . Research at P urdue on the use of roughness m easuring devic...

In order to maximize road maintenance funds and optimize the condition of road networks, pavement management systems need detailed and reliable data on the status of the road network. To date, reliable crack and raveling data has proven difficult and expensive to obtain. To solve this problem, over the last 10 years[1][2] Pavemetrics inc. in collaboration with INO (National Optics Institute of ...

A signal processing algorithm based on the principle of support vector machines as well as the analysis to the characteristics of road surface diseases is proposed to detect pavement disease. Measurements from vehicle-mounted sensors (e.g., accelerometers and Global Positioning System (GPS) receivers) are properly combined to produce higher quality road roughness data for road surface condition...

We present a ground penetrating radar (GPR) system, which uses an antenna array for in situ measurements of the thickness and dielectric permittivity of an asphalt pavement layer. We calibrated the antenna array by considering the antenna phase center and the antenna offset. The results of the laboratory measurements demonstrate that the proposed calibration method can greatly improve the accur...

The Minnesota Department of Transportation (Mn/DOT) Office of Materials and Road Research advances the state of the practice of pavement design, construction, and maintenance by conducting and participating in pavement and materials research projects, implementation of research results, and supporting practitioners. One of the many research strategies is the study of tire-pavement noise using M...

Committed to converting the Port of Balboa into a major transshipment hub, Panama Ports Company (PPC) launched in 2006 a $300-million expansion program to increase berthing and stacking space that would almost triple the port capacity. The site’s history of marine-related activities, deteriorating facilities, buried structures, and poor soils mandated significant investment in clearing and prep...

1 Assistant Professor, Department of Civil Engineering, MingHsin University of Science & Technology, No. 1 Hsin-Hsing Road, Hsin-Fong, Hsin-Chu 304, Taiwan. Tel: 886-3-5593142 ext. 3295; Fax: 886-3-5573718; E-mail: [email protected] 2 Ph.D. student, Department of Civil Engineering, National Central University, Taoyuan, Chungli, 32054, Taiwan. Tel: 886-3-4269270; Fax: 886-3-4227183; Email: 923...