ABSTRACT

Thin bituminous chipseal surfaces are used on low volume roads through-out the world. Chipseals provide the required surface functionality for the traffic spectrum between unsealed roads and higher trafficked roads that requires asphalt surfacing. Increasing traffic loadings and a changing climate are increasing the demand on these seals to perform and protect the underlying pavement. It is becoming more accepted that thin bituminous surfaces are not waterproof, and the water resistance of various seals need to be measured. This paper presents the development of static and dynamic water permeability tests that measure the water resistance of thin bituminous road surfaces in a laboratory setting.