High-Strength Self-Consolidating Concrete (SCC) and High-Volume Fly Ash Concrete (HVFAC) for Infrastructure Elements: Implementation

Because of its unique nature, high-strength self-consolidating concrete (HS-SCC) has the potential to significantly reduce costs associated with transportation-related infrastructure, benefiting both Missouri Department of Transportation (MoDOT) and the residents of Missouri. HS-SCC is a highly flowable, nonsegregating concrete that can be placed without any mechanical consolidation, and thus has the following advantages over conventional concrete: decreased labor and equipment costs during concrete placement, decreased potential for and costs to repair honeycombing and voids, increased production rates of precast and cast-in-place (CIP) elements, and improved finish and appearance of cast and free concrete surfaces. In addition to SCC, innovative materials, such as high volume fly ash concrete (HVFAC), also provide a significant potential to produce more cost effective mix designs for CIP concrete. Since the 1930’s, fly ash – a pozzolanic material – has been used as a partial replacement of portland cement in concrete to improve the material’s strength and durability, while also limiting the amount of early heat generation. From an environmental perspective, replacing cement with fly ash reduces the concrete’s overall carbon footprint and diverts an industrial by-product from the solid waste stream (currently, about 40 percent of fly ash is reclaimed for beneficial reuse and 60 percent is disposed of in landfills). The objective of this research is to provide an implementation test bed and showcase for the use of sustainable and extended service life concrete. In this implementation study for Missouri Bridge A7957, a level of 50% fly ash to cement proportions was utilized as well as normal strength self-consolidating concrete (NS-SCC) and HS-SCC in the load carrying elements to showcase the use of these innovative materials.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Photos; References; Tables;
  • Pagination: 272p

Subject/Index Terms

Filing Info

  • Accession Number: 01536612
  • Record Type: Publication
  • Report/Paper Numbers: NUTC R315, Project #00040350
  • Contract Numbers: DTRT06-G-0014
  • Files: TRIS, RITA, ATRI, USDOT, STATEDOT
  • Created Date: Aug 26 2014 10:29AM