A COMPARISON OF FOUR METHODS OF SAMPLING CEMENT FROM BULK DELIVERY TANKERS

This report describes an experiment to compare four methods of sampling cement from bulk-delivery tankers. The cement samples were compared for fineness and for the compressive strength of concrete cubes made from the cement and cured for 3, 7 and 28 days. No significant difference was found between the four sampling methods from the compressive-strength results. However the bleed sampling device gave values of specific surface which were significantly more variable and larger than the other methods. Since sampling using the bleed device was found to be the easiest to carry out and the least inconvenient to the sampler and cement-supplier, it is worth considering whether the test procedure can be modified to produce more consistent results. /Author/TRRL/

• Corporate Authors:

  Transport and Road Research Laboratory (TRRL)

  Wokingham, Berkshire  United Kingdom 
• Authors:
  • EDWARDS, A C
  • Mead, R J
• Publication Date: 1974

Language

• English

Media Info

• Features: Figures; Photos; References; Tables;
• Pagination: 22 p.

Subject/Index Terms

• TRT Terms: Alternatives analysis; Bleeding; Cement; Compression; Compressive strength; Concrete; Concrete curing; Cubes; Equipment; Fineness; Methodology; Samples; Sampling; Specific surface; Strength of materials; Test procedures; Variables
• Old TRIS Terms: Fine; Sample (Material)
• ITRD Terms: 6155: Apparatus (measuring); 4917: Bleeding (concrete/bitumen); 4758: Cement; 5532: Compression; 4755: Concrete; 6457: Cube; 4702: Curing (concrete); 9023: Fine (mater); 6251: Sample (mater); 6253: Sampling; 5544: Strength (mater)
• Subject Areas: Construction; Highways; Materials; Planning and Forecasting; I32: Concrete; I52: Construction of Pavements and Surfacings; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00096166
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Report/Paper Numbers: TRRL LR 645
• Files: ITRD, TRIS, ATRI
• Created Date: Jul 24 1975 12:00AM