Acceptable vibrations on green concrete.

Details

• Creators:
  Freyne, Seamus F. ; Watkins, Mitchell L.
• Corporate Creators:
  Mississippi State University. Dept. of Civil and Environmental Engineering
• Corporate Contributors:
  United States. Federal Highway Administration
• Subject/TRT Terms:
  • Fresh concrete
  • Vibration
  • Foundations
  • Coarse aggregates
  • Compressive strength
  • Electrical resistivity
  • Performance tests
• Publication/ Report Number:
  FHWA/MS-DOT-RD-13-252 ; MS-DOT-RD-13-252
• Resource Type:
  Tech Report
• Geographical Coverage:
  Mississippi
• Corporate Publisher:
  Mississippi. Dept. of Transportation
• Abstract:
  Vibrations are potentially harmful to green concrete in shaft foundations, and many states, including ; Mississippi, cautiously established limits in terms of compressive strength, distance boundary, and ; wait time to protect early age concrete. But these limits could be overly conservative with respect ; to experimental evidence, and perhaps unnecessarily impede construction schedules and add cost to ; projects. The objective of this study was to quantify the effects of early age vibrations on concrete ; performance. Concrete cylinders were exposed to several combinations of vibration magnitudes ; and durations that were representative of shaft construction, and at ages coincident with the ; sensitive period between initial and final set. The vibrations had no consistent effect on compressive ; strength and electrical resistivity. There was also no discernable difference between limestone and ; river gravel coarse aggregates.
• Format:
  PDF
• Funding:
  State Study 252
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/27479/dot_27479_DS1.pdf
• File Type:
  [PDF - 129.28 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha256:368dfef52945506e021771e3f9b8953ede60a990dada5ff4749523447368e065