A field investigation of concrete overlays containing latex, silica fume, or Pyrament cement.

Details

• Creators:
  Ozyildirim, H. Celik
• Corporate Creators:
  Virginia. Dept. of Transportation ; Virginia Transportation Research Council (VTRC)
• Subject/TRT Terms:
  • Pavements--Overlays
  • Bridges--Maintenance and repair
  • Pavements, Concrete--Additives
  • Silica fume
  • Latex
• Publication/ Report Number:
  FHWA/VA-96-R23
• Resource Type:
  Tech Report
• Geographical Coverage:
  Virginia
• Edition:
  Final report.
• Corporate Publisher:
  Virginia Transportation Research Council (VTRC)
• Abstract:
  This study evaluated latex-modified concretes (LMC) and concretes containing silica fume (SFC) or Pyrament-blended cement (PBCC) in bridge deck overlays in the field. The condition of the overlays was monitored for 4 years. LMC and SFC were placed in 2 days using a vibratory roller screed spanning half the width of the bridge, each side in 1 day. PBCC was placed in small segments, each covering half the width of the bridge, in 2 months. The placement in small segments was dictated by traffic control requirements. PBCC was used with no admixtures. Similarly, LMC was used with no admixture except the latex-modifier. The results indicate that LMC, SFC, and PBCC have low permeability and satisfactory strengths. PBCC develops high very early strengths within hours, even in cold weather, and SFC develops sufficient compressive strength for opening to traffic in 1 day. Since all three concretes are prone to plastic shrinkage, proper and immediate curing are essential.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/19420/dot_19420_DS1.pdf
• File Type:
  [PDF - 2.36 MB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:552c0733ddbf596432592ea9ab43fbe838d1011376f040bc6cebacd69a5d7a3a293ae06e4b3b0835b96491fe9fd78c6a46aafb53d53ef66399d7937ae714e8a9