North Carolina DOT
Admixtures, Compressive strength, Concrete pavements, Durability, Highway maintenance, Infrastructure, limestone, Mix design, Quality assurance, Quality control, Sustainable development
As funds to construct, maintain, and preserve today's highway infrastructure become increasingly stretched, it is imperative that the criteria for selection of concrete mixtures and acceptance of placed concrete reliably ensure durability. The long service life expectations of pavements, bridges, and other components are often difficult to meet by using typical tests for specification and acceptance, which center around three criteria: slump, air content, and compressive strength. These three criteria are only loosely related to deterioration phenomena and so do not always ensure satisfactory field performance. Consistent with the focus of Moving Ahead for Progress in the 21st Century Act (MAP-21) legislation on performance, there is a desire by Federal Highway Administration (FHWA), public agencies, and industry to move towards performance-engineered construction materials.