Advanced quality control methods for road paving construction by utilizing sensory devices

This study is currently being conducted to produce a more realistic picture of how variables are created and dealt with from hot mix asphalt (HMA) paving construction in the State of Nebraska. Several paving projects across Nebraska have been visited where sensory devices are being used to test how density, moisture content within the asphalt, material surface temperature, internal temperature, wind speed, haul time, and equipment type, contribute to temperature differentials. Areas of high temperature differentials are identified using an infrared camera, and confirmed with a penetrating thermometer. A non-nuclear density device is also used to record how the lower temperature asphalt density compares to the more consistent hot area. After all variables are recorded, the location is recorded via a handheld global positioning system(GPS) to aid in locating points of interest in future site revisits to verify the research findings. Initial data collection suggests that most variables having the largest impact on quality can be controlled with adequate planning, and proper lay down procedures. Copyright ASCE 2009.