CAUSES AND CONTROL OF CRACKING IN CONCRETE REINFORCED WITH HIGH-STRENGTH STEEL BARS - A REVIEW OF RESEARCH

CRACK FORMATION DEVELOPMENT AND CONTROL OF CRACKS ARE AMONG THE MOST IMPORTANT CONSIDERATIONS IN THE DESIGN OF REINFORCED CONCRETE STRUCTURES. THE LITERATURE SURVEY REVIEWS THE PRESENT STATE OF KNOWLEDGE ON THE CAUSES AND CONTROL OF CRACKING IN REINFORCED CONCRETE MEMBERS, AND SUGGESTS POSSIBLE APPROACHES FOR THE MAXIMUM UTILIZATION OF HIGH-STRENGTH STEEL BARS IN REINFORCED CONCRETE MEMBERS. THE SURVEY REVIEWS THE MECHANISMS INVOLVED IN CRACK FORMATION DUE TO SHRINKAGE, CORROSION, MEMBERS LOADED IN DIRECT TENSION, AND FLEXURAL MEMBERS. GENERAL THEORIES FOR CRACK SPACING AND CRACK WIDTH ARE PRESENTED BOTH FOR AXIALLY LOADED MEMBERS AND FOR FLEXUAL MEMBERS, WITH CRITICAL COMMENTS ON EACH THEORY. INCLUDED ARE RECOMMENDATIONS OF VARIOUS INVESTIGATORS, CODES ON PERMISSIBLE CRACK WIDTH, AND CRACK CONTROL METHODS DEVELOPED FROM ANALYTICAL AND EXPERIMENTAL RESEARCH. THE SURVEY INDICATES THAT, ALTHOUGH THE BASIC CONCEPTS OF CRACKING ARE FAIRLY WELL UNDERSTOOD, THERE IS CONSIDERABLE LACK OF AGREEMENT AMONG INVESTIGATORS ON THE INFLUENCE AND SIGNIFICANCE OF VARIOUS CRACKING PARAMETERS. NO COMPLETE GENERAL THEORY FOR PREDICTING CRACK WIDTH HAS BEEN DEVELOPED, ALTHOUGH THE THEORIES PRESENTED APPROACH THIS GOAL IN THAT THE MAJOR FACTORS AFFECTING CRACK SPACING AND WIDTH ARE INDICATED. THERE IS A DEFINITE NEED FOR ADDITIONAL RESEARCH ON ALL PHASES OF CRACKING. /AUTHOR/

• Supplemental Notes:
  • No 479, 61 PP, 18 FIG, 4 TAB, 212 REF
• Authors:
  • Reis, E E
  • Mozer, J D
  • Bianchini, A C
  • Kesler, C E
• Publication Date: 1965

Media Info

• Serial:
  • Illinois Univ Eng Exp Sta Bulletin

Subject/Index Terms

• TRT Terms: Bars (Building materials); Concrete; Control; Corrosion; Cracking; High strength steel; Material reinforcement; Reinforced concrete; Reviews; Shrinkage; Tension
• Uncontrolled Terms: Causes; Concrete cracking
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00208567
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 12 1970 12:00AM