摘要: |
The Ohio Department of Transportation (ODOT) has identified the need to specify durable, more permanent high performing pavement and bridge deck patching materials that allow for expediting pavement and bridge deck wearing surface repair for worker and user safety. Currently, either temporary or generally specified in-kind or like materials are being used to perform pavement patching. Usually, the Department provides generically specified cementitious or cold asphalt materials for patching wearing surfaces with varied performance characteristics. Current products used for this purpose are generally those that have been used for many decades for which competition exists. However, new or proprietary products are difficult to specify unless incorporated into a construction project for research purposes, an approved equal is permitted, or procurement of the product complies with the Department's direct purchasing requirements. Consequently, this creates a situation in which the desired product is precluded from use. The objective of this research project are to: (1) Identify/determine acceptable field performance criteria for comparative analysis of selected products; (2) Install the products at mutually agreed locations as described herein; (3) Evaluate the products based on field performance criteria; (4) Provide updated field performance evaluation criteria based on the field performance analysis; (5) Provide a comprehensive standard material and performance based generic specifications in the Standard ODOT Construction and Material Specifications or Supplemental Specifications format based on desired ASTM or equivalent material properties and field performance analysis; and (6) Provide a decision matrix for use of the recommended products. |