Ley, TylerBani Maria, Mohd Hashem2024-11-272024-11-272024-05https://hdl.handle.net/20.500.14446/345694This study investigates the influence of aggregate gradation, glass fibers, and larger nominal maximum coarse aggregate size on the performance and properties of concrete mixtures. A novel bridge deck concrete mixture design was developed for the Minnesota Department of Transportation utilizing a mobile mixer, known as a "volumetric mixer truck," aimed at reducing carbon footprint. The design incorporated an improved aggregate gradation based on the optimized Tarantula Curve method. Testing was conducted to ensure the newly formulated mixture met the desired properties. Various tests, including assessments of fresh properties, Drying Shrinkage, Hardened Air Voids Analysis, Freeze-Thaw Durability, Split Beam Test, Ion Penetration Test, electrical resistivity, and Compressive Strength, were conducted. Further investigation focused on enhancing the concrete mixture by adding glass fibers using a fiber chopper attached to the volumetric mixer truck. This enhanced mixture underwent testing for fresh properties, split beam test, electrical resistivity, and compressive strength. Additionally, concrete mixtures with a 1.5-inch nominal maximum coarse aggregate size were prepared and tested. The Tarantula Curve design method was employed to adjust the coarse aggregate amount while maintaining the fine aggregate constant. The study examined the influence of the percent retained on the 1-inch sieve size on various aspects including workability performance, compressive strength, electrical resistivity, mass change, and shrinkage strain. Findings from these tests provide valuable insights into the performance characteristics of concrete mixtures with different aggregate gradations, inclusion of glass fibers, and variations in nominal maximum coarse aggregate size. This research contributes to the optimization of concrete mixture designs for improved structural performance and durability, particularly relevant for infrastructure projects.application/pdfCopyright is held by the author who has granted the Oklahoma State University Library the non-exclusive right to share this material in its institutional repository. Contact Digital Library Services at lib-dls@okstate.edu or 405-744-9161 for the permission policy on the use, reproduction or distribution of this material.Thesisconcreteconcrete durabilityglass fibertarantula curvevolumetric mixer