CRACK WIDTH CONTROL IN REINFORCED CONCRETE TWO-WAY SLABS

THE EFFECT OF TWO-WAY ACTION ON CRACK WIDTH DEVELOPMENT IS COVERED IN BOTH CENTRALLY LOADED AND UNIFORMLY LOADED SLAB SYSTEMS OF VARIED BOUNDARY CONDITIONS. AS A RESULT, CRITERION IS DEVELOPED WHEREBY MORE BUT NARROWER FLEXURAL CRACKS OF ORTHOGONAL PATTERN CAN BE PRECIPITATED, THEREBY CONTROL OF CRACK WIDTH DEVELOPMENT IN TWO-WAY CONCRETE FLOOR SLABS. A CRACKING HYPOTHESIS IS PRESENTED AND VERIFIED BY TESTS ON 22 CENTRALLY LOADED SLABS 5 FT 8 IN., X 5 FT 8 IN. AND 32 UNIFORMLY LOADED SLABS 5 FT 0 IN X 5 FT 0 INCHES. THE SIZE AND SPACING OF THE WIRE REINFORCEMENT ARE VARIED TO EXTREMES. A GRID INDEX IS PROPOSED AS A MEASURE OF CRACK CONTROL IN TWO-WAY SLABS UNDER DIFFERENT BOUNDARY AS WELL AS LOADING CONDITIONS. /AUTHOR/

• Supplemental Notes:
  • Vol 96, No ST3, PROC PAPER 7182, PP 701-702
• Authors:
  • Nawy, E G
  • Orenstein, G S
• Publication Date: 1970-3

Media Info

• Serial:
  • Journal of the Structural Division
  • Publisher: American Society of Civil Engineers

Subject/Index Terms

• TRT Terms: Control; Fracture mechanics; Load tests; Material reinforcement; Reinforced concrete; Size; Slabs; Spacing; Width; Wire
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209216
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 29 1970 12:00AM