Experimental Use of Self Consolidating Concrete for Precast Prestressed Box Beams

Self Consolidating Concrete, Self Compacting Concrete, and S.C.C. are terms used to identify a new method of concrete mix design and placement method recently developed in the concrete industry. S.C.C. was first introduced to the concrete industry in the late 1980’s, primarily in Europe, and now is beginning to see more use in North America, predominately in precast operations. As of July, 2002 approximately 24 states are involved in the study of this technology. Additionally ASTM Committee C09 on Concrete and Concrete Aggregates formed Subcommittee C09-47 on Self Consolidating Concrete with the goal of adopting this as a future standard. The Precast Concrete Institute (PCI) has also formed a team to study recommendations on the use of SCC in the Precast /Prestressed concrete industry. SCC is an extremely flowable concrete. SCC is also self leveling and self compacting requiring minimal or no vibration. These mix properties are achieved through a combination of advanced High Range Water Reducers and Viscosity Modifying Admixtures. As compared to conventional concrete mixes, SCC typically contains a higher cement content and increased percentage of fine aggregate. The workability of SCC is measured by the spread rather than the slump using an inverted slump cone as shown on the cover photo. When determining acceptability of an SCC mix, the diameter of the spread is measured along with the ability of the paste to carry the coarse aggregate completely to the outer edges of the spread. No concrete should remain visibly higher in the center of the spread and no halo of paste or water should appear around the edges of the spread.

• Record URL:
  http://www.maine.gov/mdot/tr/documents/pdf/report0310scc.pdf
• 
• Corporate Authors:

  Maine Department of Transportation

  16 Statehouse Station
  Augusta, ME  United States  04333
• Authors:
  • Redmond, Michael J
• Publication Date: 2003-10

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Technical Memorandum
• Features: Figures; Photos; Tables;
• Pagination: 11p

Subject/Index Terms

• TRT Terms: Admixtures; Box beams; Mix design; Precast concrete; Prestressed concrete; Self compacting concrete; Technology; Water reducing agents
• Subject Areas: Design; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01470546
• Record Type: Publication
• Report/Paper Numbers: ME 03-10
• Files: TRIS, ATRI, STATEDOT
• Created Date: Jan 24 2013 9:07AM