U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

i

Design of high-performance concrete mixtures and test beams for a bridge in Virginia.

File Language:
English


Details

  • Creators:
  • Corporate Creators:
    Virginia Transportation Research Council (VTRC)
  • Subject/TRT Terms:
  • Publication/ Report Number:
    FHWA/VA-96R27
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Virginia
  • Edition:
    Final report.
  • Corporate Publisher:
    Virginia Transportation Research Council (VTRC)
  • Abstract:
    The main objective of this study was to develop concretes with a compressive strength of 69 to 83 MPa (10,000 to 12,000 psi) at 28 days and a high early release strength (within 20 hr) exceeding 70% of the 28-day strength. The properties of the high-performance concretes (HPC) tested included compressive strength, flexural strength, splitting tensile strength, and permeability. Four prestressed concrete AASHTO Type II beams were fabricated with HPC at a prestressing plant and load tested to failure. This test program was undertaken to support the field application of HPC in Virginia. Results showed that high-strength and low-permeability air-entrained mixtures could be designed. Concretes with a 28-day strength exceeding 69 MPa (10,000 psi), a minimum release strength of 70% of the 28-day strength, and coulomb values below 1,500 at 28 days can be produced with a water-cementitious material ratio (W/CM) of about 0.30 or below. Achieving such a low W/CM requires large amounts of cementitious material, proper selection of aggregates, and high dosages of high-range water-reducing admixtures. Thorough mixing is necessary, and good construction practices must be followed during placement, consolidation, and curing. To achieve high early strengths, proper temperature management is also needed.
  • Format:
    PDF
  • Collection(s):
  • Main Document Checksum:
    urn:sha256:90a209dd161502e968287966e3e292102e6633fedd37de92a34438682b1ad88f
  • Download URL:
  • File Type:
    Filetype[PDF - 3.32 MB ]
PREVIOUS
File Language:
English
ON THIS PAGE
Details
ROSA P serves as an archival repository of USDOT-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to ensure public access to scientific information.
BACK TO TOP