CEMENT AND WATER CONTENT AND POTENTIAL STRENGTH MEASURED IN 15 MINUTES

The Kelly-Vail technique which uses chemical analyses to determine the actual amounts of cement and water present in fresh concrete, was evaluated and modified. Laboratory and field tests have indicated that the CERL-KV procedure is accurate plus or minus 5% of water content and plus or minus 7% for cement content. When used in conjunction with air content tests, the procedures allow estimations of strength potential of fresh concrete to within 15 percent. The water test procedure involves intermixing the available water in a given weight of concrete with a chloride solution of given concentration and volume. The chloride concentration in the intermixed solution, which is determined by the Volhard backtitration method, is directly related to the water content of the concrete. In the cement test procedure, the aggregates and cement are separated by washing a concrete sample over a nest of sieves with a constant volume of recirculating water. The calcium concentration in the recirculating water indicates the cement content of the concrete.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/05490219
• Corporate Authors:

  Concrete Construction Publications, Incorporated

  P.O. Box 321
  Addison, IL  United States  60101
• Publication Date: 1977-8

Media Info

• Features: Figures;
• Pagination: p. 427-428
• Serial:
  • CONCRETE CONSTRUCTION
  • Volume: 22 N
  • Issue Number: 8
  • Publisher: CEMENT & CONCRETE ASSOCIATION OF NEW ZEALAND
  • ISSN: 0549-0219

Subject/Index Terms

• TRT Terms: Air content; Calcium; Cement content; Chemical analysis; Chloride content; Concrete; Strength of materials
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00163694
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 7 1978 12:00AM