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The mission of the National Concrete Pavement Technology Center is to unite key transportation stakeholders around the central goal of advancing concrete pavement technology through research, tech transfer, and technology implementation. The contents of this report refl ect the views of the authors, who are responsible for the facts and the accuracy of the(More)
Using a dSLR camera with macro LED light, 11 samples containing light and moderately cracked concrete surfaces were imaged with perpendicular and angled illumination. Textural features from gray level co-occurrence matrix statistics were derived, from which 3-6 salient features were selected. Cross validation accuracies were as high as 94% using neural(More)
Research Interests and Expertise: Concrete mixture proportioning, development of sustainable construction materials related to concrete; pervious concrete mixture design, construction, and testing; concrete material analysis; development of testing procedures; and pavement performance; durability of concrete materials; beneficial material by-product(More)
Permeable reactive barriers (PRBs) are a well-known technique for groundwater remediation using industrialized reactive media such as zero-valent iron and activated carbon. Permeable reactive concrete (PRC) is an alternative reactive medium composed of relatively inexpensive materials such as cement and aggregate. A variety of multimodal, simultaneous(More)
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