Engineered Cementitious Composites (ECC) for Applications in Texas

US Transportation Collection2020PDFTech ReportPark, PhilipJones, RobertCastillo, LucasVallangca, MarieCantu, FranherUniversity of Texas Rio Grande Valley. Department of Civil EngineeringUnited States. Department of Transportation. Federal Highway AdministrationTexas. Dept. of Transportation. Research and Technology Implementation OfficeTexas. Dept. of Transportation. Research and Technology Implementation OfficeTexasUnited StatesBenefit cost analysisBridge decksCementComposite materialsLife cycle analysisMix designOverlays (Pavements)RecommendationsState of the practiceEngineered materialsMechanical propertiesEngineered cementitious composites (ECC)field applicationsFHWA/TX-20/0-7030-10-7030September 2019 \u2013 August 2020The objective of this project was to identify the applications of engineered cementitious composites (ECC) that are suitable for the Texas transportation system. To achieve this goal, the following three activities were conducted: (1) literature review and data analysis, (2) survey on ECC state-of-the-practice, and (3) cost-benefit analysis through life-cycle cost analysis (LCCA) and life-cycle assessment (LCA). Comprehensive information about ECC including the materials properties, mixture designs, field applications, and survey results are synthesized. The results of LCA and LCCA for the applications to pavement overlay and bridge link slab demonstrate that the use of ECC is beneficial in the aspects of the agency cost, user cost, greenhouse gas emission, and energy consumption. Based on the findings from these activities, recommendations for ECC applications in Texas are provided. The priority applications for ECC are the following: (1) pavement overlay made of ECC, (2) ECC link-slab for bridge expansion joints, and (3) repair of existing concrete structures with ECC. A standard mixture proportioning composed of Portland cement, class F fly ash, sand, water, and polyvinyl-alcohol (PVA) fiber is proposed. In addition, further research topics to facilitate practical applications of ECC in Texas are suggested.120