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TLN
Video Conference

Application of Self-Consolidating Concrete in Bridge Structures

  • Feb 13, 2012 (2:00 - 3:30 pm CT; 1:00 - 2:30 pm MT)
    Webinar

Description

Studies were conducted at South Dakota State University to determine the feasibility of constructing precast beams and precast and cast-in-place box culverts in South Dakota using SCC made with local aggregates. The research included literature search and review, development of SCC mix designs utilizing South Dakota local aggregates, aggregate testing, material testing of both fresh and hardened SCC properties, development of SCC special provisions in coordination with SDDOT staff and industry representatives, and evaluation of constructability of SCC box culverts.

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 steel and narrow elements, which can cause problems with concrete consolidation. The objectives of this research were to evaluate the feasibility and performance of self-consolidating concrete (SCC) made with local aggregates for use in cast-in-place and precast concrete applications and to develop draft specifications, acceptance criteria, mix qualifications, and guidelines for use of SCC by SDDOT. Because of the favorable properties that SCC exhibits, the Federal Highway Administration and the precast concrete industry have been promoting the research and development of SCC for structural applications in bridges.

Participants will learn:

  • The study procedures and outcome of the research.
  • The potential savings of using self-consolidating concrete.
  • Insights into possible applications in the transportation industry.
  • Insights into accommodating the use of self-consolidating concrete.
  • Insights into the field inspection needs when self-consolidating concrete is needed.

Speaker(s)

Dr. Nadim Wehbe, Professor of Civil Engineering at South Dakota State University. Dr. Wehbe’s speciality area is structural engineering with academic interest in reinforced and prestressed concrete structures, earthquake resistant bridges, and advanced composites structural systems. He earned his B.E. in Civil Engineering in 1980 from the American University of Beirut; an M.S. in Civil Engineering in 1992 from University of Nevada, Reno; and a Ph.D. in Civil Engineering in 1997 from University of Nevada, Reno.

Target Audience

Construction inspectors, materials staff, specification writers and bridge designers, suppliers and contractors.

More Info

The above resource and more can be accessed by visiting the TLN Learning Management System (LMS).

NDSU Dept 2880P.O. Box 6050Fargo, ND 58108-6050
(701)231-1087ndsu.ugpti@ndsu.edu