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Research Reports
Filter by Keyword67 report(s) found with concrete in the keywords field Two interlaboratory studies were performed utilizing recycled concrete aggregate (RCA) in accordance with ASTM C1260 Accelerated Mortar Bar Test (AMBT) in addition to the previous study documented in Adams et al. 2013. The first round of testing utilized a non-laboratory created RCA and the second evaluated... Concrete has been used in dams, bridges, and highway pavements in which freeze-thaw process and cyclic loading are considered as important factors affecting its mechanical behavior during its service life. Damage caused by frost expansion is a primary concern when designing concrete structures in cold... Over the years, Fiber Reinforced Polymer (FRP) composites have gained popularity in transportation infrastructure as a material able to restore and increase the capacity of existing concrete elements. Properties such as a high strength to weight ratio, non-corrosive nature, durability, and high malleability... This report describes research performed in coordination with work at the University of Stuttgart, attempting to establish the S-N curve for fatigue loading of notched wood-concrete connections based on low/high-cycle, repeated loading tests. Experimental results are obtained on fourteen 1524 mm span... There are 16 small to medium simple span bridges in Larimer County that are currently load rated solely based on visual inspections. Most of these bridges are prestressed concrete bridges. The objective of this project is to load rate these bridges using structural analysis with very little to no information... The use of self-consolidating concrete (SCC) for the manufacture of precast structural elements provides the benefits of increased rate of production, reduced labor needs (safety), and enhanced product quality. The same benefits apply to cast-in-place construction, especially with closely spaced reinforcing... This research focuses on the beneficial utilization of Spray Dryer Ash (SDA) and investigates its performance in concrete for structural and transportation applications. Based on the challenges associated with disposal of all coal ashes, and SDA in particular, and the economic and environmental costs... This research study focused on the long-term and repeated load behavior of wood-concrete composite beams in which the wood layer is composed of recycled utility poles. Previous research studies have found this type of a beam to have high efficiency and to be a potentially viable replacement for short... Recent studies have shown that the use of self-consolidating concrete (SCC) results in improved finished quality, increased production efficiency, and reduced labor cost. Because of the favorable properties that SCC exhibits, the Federal Highway Administration and the precast concrete industry have been... A wood-concrete composite bridge constructed of recycled utility poles is a potentially cost effective solution to repair a portion of the 108,647 rural bridges that have been deemed functionally obsolete or structurally deficient and have a span under thirty feet in length. This research project focuses... |
