Category: Recent Journal Articles

Abstract: This paper presents the results of a study that was conducted to understand the impacts of aging and rejuvenation on fundamental properties of asphalt binders. A Performance Grade (PG) 64-22 binder was aged to simulate aging of asphalt mixes during construction and in-service conditions.… View More

Abstract: Newfoundland and Labrador is the most easterly province in Canada, and is at the north-eastern corner of North America. Each day, roads in this province bears the impacts of northern harsh climates in addition to ever increasing traffic loading. Combinedly, they have significantly negative impacts on the durability of the roads in this region.… View More

Abstract: Asphalt binder is a very complex chemical compound. Much work has been done to understand and model its chemical, morphological, rheological and mechanical features. This survey paper presents test results and findings from pertinent studies available in the public domain.… View More

Abstract: Over five million tons of salt (NaCl) is applied in Canada every winter to improve pavement friction in the winter season. While effective for improving pavement surface condition, salts at high concentrations are detrimental to the environment and corrosive to vehicles and infrastructure.… View More

Abstract: This chapter presents a review of current snow and ice control methods, and a guide for selecting an optimal application rate for specific weather, treatment and level of service requirement. Determining the proper treatment course for a given winter event is extremely important, both from an economic and environmental perspective.… View More

Abstract: This paper describes an empirical study aimed at investigating the performance of the anti-icing strategy for snow and ice control of parking lots and sidewalks. The research is motivated by the need to address several key questions concerning various operational decisions related to the anti-icing strategy, including its relative effectiveness under different weather and site conditions, treatment options, and optimal application rates.… View More

Abstract: Pedestrian safety on parking lots and sidewalks is a main concern under adverse winter conditions because of the reduced friction level caused by snow and ice contaminations. Although there is an intuitive understanding that the risk of slipping is related to the friction level of a pavement surface affected by snow and ice, there is limited knowledge on the underlying relationship and how friction level is affected by various factors such as contaminant type and amount, pavement type, and other factors.… View More

Abstract: This paper presents the results of an extensive field study of the comparative deicing performance of conventional dry road salt and prewetted road salt for the snow and ice control of transportation facilities. Approximately 500 tests in side-by-side sections were conducted in a real-world environment, covering a wide range of weather conditions in 31 snow events.… View More

Abstract: This paper presents the results of an extensive field study of the comparative performance of road salt on different pavement types for snow and ice control in transportation facilities. Approximately 400 tests were conducted in a real-world environment, covering three different pavement types and 27 snow events.… View More

Abstract: This paper describes the results of a field study designed to quantify the effects of various factors on the snow-melting performance of salt. Many tests were conducted in a realistic environment over two winter seasons, covering more than 70 snow events, with temperatures ranging from -14°C to 3°C and snowfalls ranging from ~0.2 to 21.0 cm.… View More