—Continued on Pg. 2 The new Preservation Group (PG) experiment will provide answers for cash-strapped state and local agencies that need cost-effective ways to maintain existing asphalt roadways. Budgets are tight, but agencies still have the same task: keeping aging pavements in good condition for the driving public. When applied at the right time, pavement preservation treatments, such as chi...

Texas currently has approximately 17,000 miles of load-zoned roads, the majority of which are posted at 58,420 lbs. These roads consist predominantly of thin pavement structures constructed in the 1940s and 1950s, originally designed to carry the lighter loads of those times. In 1989, the 71st Texas Legislature passed House Bill 2060 (HB 2060), which established a $75-per-county permit that all...

middle of squares, one of the components of physical aspect is considered as an appropriateindicator in designing successful urban squares, which consequently promotes visual quality. the present study aims todetermine how the above mentioned aspect was presented in the middle-ages and renaissance within italian squares.considering the aim of the investigation, library studies as well as visual...

USE OF REMOTELY SENSED PAVEMENT DATA FOR NEEDSASSESSMENT, PRIORITIZATION AND RESOURCE ALLOCATION, ANDMAINTENANCE PERFORMANCE EVALUATIONZachary HansResearch [email protected] Omar SmadiPavement Management [email protected] for Transportation Research and Education, Iowa State University2901 S. Loop Drive, Suite 3100, Ames, Iowa 50010-86...

Pavement surface texture and its skid resistance are two key safety parameters of highways, which both are influenced by pavement characteristics. This research is done on a newly constructed asphalt pavement (Qom-Garmsar freeway) in Iran. The goal is investigating the relation between skid resistance and pavement texture in order to asphalt content changes in Hot Mix Asphalt. Mean Texture Dept...

Wireless Weigh-In-Motion: using road vibrations to estimate truck weights by Ravneet Singh Bajwa Doctor of Philosophy in Electrical Engineering and Computer Science University of California, Berkeley Professor Pravin Varaiya, Chair Vehicle count and weight data plays an important role in traffic planning, weight enforcement, and pavement condition assessment. This data is primarily obtained thr...

Life Cycle Assessment (LCA) is recognized as one of the most comprehensive ways to evaluate the environmental impacts of different strategies associated with a physical feature such as highway pavement structures, bridges and vertical structures. Alternatively, life cycle cost analysis (LCCA) is performed by different agencies including Manitoba Infrastructure (MI) to select the most cost-effec...

An analysis of the use-stage for pavement life-cycle assessment (LCA) is presented within a framework of an LCA tool developed for Illinois Tollway. Methodological choices that can significantly affect LCA results were evaluated in this study. The share of the use-stage in a comprehensive pavement LCA framework was evaluated with all life-cycle stages including materials, construction, use, mai...

Forecast systems provide decision support for end-users ranging from the solar energy industry to municipalities concerned with road safety. Pavement temperature is an important variable when considering vehicle response to various weather conditions. A complex, yet direct relationship exists between tire and pavement temperatures. Literature has shown that as tire temperature increases, fricti...

To facilitate pavement design, the new proposed mechanistic-empirical pavement design guide recommends the resilient modulus to characterize subgrade soil and its use for calculating pavement responses attributable to traffic and environmental loading. Although resilient modulus values could be determined through laboratory testing of actual subgrade soil samples, such testing would require sig...