QUICK QUALITY CONTROL TESTS FOR AGGREGATE GRADING--A REVIEW OF PROCEEDINGS

The grading of sand and gravel products produced at a plant is determined by laboratory sieve analysis and the percentage of minus No. 200 material by washing. These properties are frequently the subject of regular quality control checks by the sand and gravel producer, and they are the most frequently run acceptance tests by inspection agencies. The standard sieve analysis and minus No. 200 test procedures are described. The procedure results in the availablity of data about 48 hours after the sample has been taken. It is often desirable to have gradation results available the some day the sample is taken for quality control purposes or for acceptance purposes in those situations where large qualities of aggregate are being incorporated into the project each day. The following three categories of short-cut procedures are discussed in this report: Rapid drying procedures; sieving of damp aggregates; and, wet sieving procedures.

  • Corporate Authors:

    National Sand and Gravel Association

    900 Spring
    Silver Spring, MD  USA  20910

    National Ready Mixed Concrete Association

    900 Spring Street
    Silver Spring, MD  USA  20910
  • Publication Date: 1978-8

Media Info

  • Features: Appendices; Figures;
  • Pagination: 7 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00183704
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Dec 3 1978 12:00AM