Anol K. Mukhopadhyay, Xijun Shi, Dan G. Zollinger
aggregate mixtures;, Concrete aggregates, Interstate highways, Pavement performance, Portland cement concrete, reclaimed asphalt pavements, Recycled materials
There are widespread benefits of using recycled and reusable waste materials in construction, especially in transportation projects. The Oklahoma Department of Transportation (ODOT) is conducting several technical studies to develop some specification and/or methodology incorporating recycled materials. But technical solutions will not be sufficient unless business consideration of the private sector within the state can be better understood and included in the decision making process. This research project will develop strategies for increasing the use of recycled materials in ODOT transportation construction projects after bringing all the stakeholder perspectives in the decision making. It will be based on available recycled wastes in Oklahoma and neighboring states Kansas, Texas and Akansas. The second objective of the study is to evaluate the long-term performance of portland cement concrete pavement (PCCP) constructed with recycled concrete aggregate (RCA). A final report will synthesize the results of the recycled materials -- availability evaluation and offer insight into the long-term performance of RCA concrete pavements in Oklahoma. Implementation of this information includes knowledge of materials currently available for use and the development of a construction specification(s) to further define the nature and benefits of recycling materials within a construction contract. Developing strategies for technical and business means will assist ODOT to use more recycled and reusable materials in construction and maintenance of transportation projects which ultimately protect and enhance human and natural environment by providing safe, economical and efficient transportation systems in Oklahoma.