GUIDELINES FOR TIMING CONTRACTION JOINT SAWING AND EARLIEST LOADING FOR CONCRETE PAVEMENTS. FINAL REPORT. VOLUME II: APPENDIX

A study with the objectives of providing guidelines for timing of contraction joint sawcutting to avert uncontrolled pavement cracking and providing guidelines for early loading of pavements by construction traffic has been conducted. A laboratory study of early age (4 to 24 hours) and early pavement loading (1 to 28 days) concrete strength properties for a range of highway concrete mixes was made. Sawcutting tests were made to determine earliest contraction joint sawcutting. Earliest sawcut timing was correlated on basis of sawcut ratings to concrete strength properties and non-destructive test results that can be used for determining earliest sawcutting time. Concrete pavement placement and joint sawcutting were observed at three highway construction sites to verify test results. Latest sawcutting time was targeted on basis of fuildup of restraint stresses attributable to slab cooling. Guidelines for sawcut timing are presented to facilitate construction site decision making based on nondestructive test methods. Early loading by construction traffic was analyzed using ILLI-SLAB finite element models. Load tests were made at two pavement sites to verify that analytical model results are applicable to new pavements. Guidelines are presented to facilitate construction site decision making for early trafficking of new pavements based on nondestructive test methods. This is the second of two volumes. It contains the Appendices to the final report.

• Corporate Authors:

  Construction Technology Laboratories, Inc.

  5400 Old Orchard Road
  Skokie, IL  United States  60077-1030

  Federal Highway Administration

  Turner-Fairbank Highway Research Center, 6300 Georgetown Pike
  McLean, VA  United States  22101
• Authors:
  • Okamoto, P A
  • Nussbaum, P J
  • Smith, K D
  • Darter, M I
  • Wilson, T P
  • Wu, C L
  • Tayabji, S D
• Publication Date: 1994-2

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 224 p.

Subject/Index Terms

• TRT Terms: Admixtures; Concrete; Concrete pavements; Construction equipment; Contraction joints; Decision making; Field studies; Finite element method; Guidelines; Laboratory studies; Load tests; Loads; Nondestructive tests; Pavements; Paving; Sawing; Strength of materials; Traffic loads
• Uncontrolled Terms: Concrete strength; Construction vehicles; Timing
• Old TRIS Terms: Field observation; Pavement loading; Saw cutting
• Subject Areas: Construction; Freight Transportation; Highways; Pavements; I52: Construction of Pavements and Surfacings;

Filing Info

• Accession Number: 00643572
• Record Type: Publication
• Report/Paper Numbers: FHWA-RD-91-080, 2E2C1042
• Contract Numbers: DTFH61-88-C-00062
• Files: TRIS, USDOT
• Created Date: Mar 15 1994 12:00AM