CONCRETE CONSTRUCTION

THE FIRST ELEMENT IN QUALITY CONTROL OF CONCRETE CONSTRUCTION IS PRODUCT CONTROL BY THE CONTRACTOR, AND THE SECOND IS ACCEPTANCE OF THE PRODUCT BY THE OWNER AS PART OF THE COMPLETED WORK, ALTHOUGH THESE PHASES HAVE BEEN COMBINED IN PRACTICE. THE PROPERTIES OF CONCRETE REQUIRED BY SPECIFICATION ARE BASED ON AASHO, ASTM, CSA, OR OTHER RECOGNIZED STANDARDS. HOWEVER, IT IS UNCERTAIN WHAT VARIATIONS IN CONCRETE AND CONCRETE MATERIALS CAN BE TOLERATED BEFORE ADVERSE EFFECTS SHOW UP; THUS THE PERFECT CONCRETE QUALITY SPECIFICATION HAS YET TO BE WRITTEN. CONVENTIONAL TESTS AND INSPECTIONS CAN PROVIDE SATISFACTORY QUALITY ASSURANCE ON MOST JOBS. THE MAIN CHANGE IS IN THE MANNER THESE TESTS ARE INTERPRETED AND APPLIED THROUGH THE USE OF A STATISTICAL BASIS FOR THE ANALYSIS, EVALUATION, AND SPECIFICATION OF CONCRETE STRENGTH AS THE OVERALL CRITERIA FOR CONCRETE ACCEPTABILITY. THIS PERMITS THE PROPORTIONING OF CONCRETE TO MEET REQUIREMENTS WITHOUT REFERENCE TO SUCH SAFEGUARDS AS A FIXED CEMENT FACTOR, WITH CONSEQUENT COST SAVINGS. ALTHOUGH IDEALIZED STATISTICALLY BASED SPECIFICATIONS HAVE BEEN DEVELOPED, THEY ARE NOT YET FEASIBLE, AND FURTHER INVESTIGATIONS ARE BEING MADE.

Media Info

  • Media Type: Print
  • Features: References;
  • Pagination: pp 7-10
  • Monograph Title: Quality assurance and acceptance procedures
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00213910
  • Record Type: Publication
  • Files: TRIS, TRB, ATRI
  • Created Date: Jul 25 1971 12:00AM