ABNORMAL CRACKING IN HIGHWAY STRUCTURES IN GEORGIA AND ALABAMA

IN 1947-1948, AN INVESTIGATION WAS MADE OF ABNORMAL CRACKING IN CONCRETE HIGHWAY STRUCTURES IN GEORGIA AND ALABAMA. IT WAS FOUND THAT 3 CEMENTS, ALL HAVING AVERAGE ALKALI CONTENTS OF MORE THAN 0.6 PERCENT WERE INVOLVED IN SUCH CRACKING WHEN USED WITH NATURAL SILICEOUS AGGREGATES FROM MONTGOMERY, ALABAMA, AND ALLIED SOURCES. A RESTRICTION OF ALKALI IN CEMENTS WAS IMPOSED IN 1947. A CONTINUING OBSERVATION OF THE PERFORMANCE OF APPROVED CEMENTS IN CONCRETE IN THE TWO STATES HAS BEEN IN PROGRESS SINCE THE INITIAL INVESTIGATION. VISUAL OBSERVATIONS, COMPREHENSIVE SONISCOPE TESTS, AND PRECISE MEASUREMENT OF LENGTH CHANGES HAVE BEEN INCLUDED IN THE STUDIES. EXTENSIVE LABORATORY TESTS OF AGGREGATES HAVE BEEN UNDERTAKEN. /PCA/

• Authors:
  • Oleson, C C
• Publication Date: 0

Media Info

• Serial:
  • Portland Cement Assoc R & D Lab Bull
  • Issue Number: 0

Subject/Index Terms

• TRT Terms: Aggregates; Alkali; Cement; Concrete; Concrete pavements; Cracking; Length; Materials tests; Pavements
• Uncontrolled Terms: Aggregate testing; Concrete cracking
• Old TRIS Terms: Alkalies; Highway pavement; Soniscope
• Subject Areas: Geotechnology; Highways; Materials; Pavements;

Filing Info

• Accession Number: 00213601
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 161
• Files: TRIS
• Created Date: Jun 1 1970 12:00AM