The Ohio Department of Transportation (ODOT) Jefferson County Maintenance Facility and a similar Wayne County project represent a new prototype for future ODOT facilities. The owner selected a 6-inch concrete pavement alternate to asphalt for the project, and a total of over 4000 cubic yards of concrete was placed in pavements, floors and walls during July and August of 2013. Ternary concrete mixtures containing slag cement, portland cement and microsilica were used to increase strength and durability.
Slag cement was used at 20% and 40% replacement levels. The 40% slag cement ternary mixture achieved 28-day strengths in the 9000-psi range and was used in salt storage facility walls. The 20% slag cement ternary mixtures provided 28-day strengths in the 6500-psi range for project paving applications. The use of slag cement in ternary mixtures reduced improved the placement, setting and finishing characteristics of the concrete, increased strength and reduced permeability for improved durability.
Project credits: Ohio Department of Transportation, Owner; MWA/JMSA JV, Architect; Sands Decker, Engineer; LW Associates, Contractor; D.W. Dickey & Son Inc., Concrete Supplier; Essroc Italcementi Group, Slag Cement Supplier.