An Alternative Test Method for Determining Hardened Air Void Parameters for Concrete Pavement

This research has developed an alternative test method for determining hardened air void parameters that follows ASTM C457 Procedure C, but does not require image analysis software or the required training and skills to develop use one. Instead, technique uses a sophisticated microscope on-board counting measuring capabilities, are easy repeat. The was tested on concrete mixtures with four target percentages (control at 2%, low 3 – 5%, medium 5 7%, high >8%) compared A B. produced conventional pavement mixture, which straight cement mixture 3” slump. results show is only just as accurate other methods, it reduces time, human judgment calls, development maintenance of program, all typical issues any three procedures described in C457. Additionally, produces provides. study also demonstrates new potential could result erroneous when following Lastly, this provides detailed description equipment necessary produce including very list steps obtained parameters.