CONCRETE TESTING - WET AND DRY

The article introduces a new method of testing concrete and reviews some of the problems of existing testing procedures. The cement and concrete association (c&ca) have developed A machine costing found1250 which runs on 240 volts electric supply and reads out the cement content of an 8 kilogramme sample of concrete with a standard deviation of 21 grammes. If pulverised fuel or similar cement substitute is present the machine cannot distinguish between the two. A subsidiary test is then required to determine the proportions accurately. The operator has to put in 8 or 10 kilogrammes of fresh concrete and in about 5 minutes time a graph is obtained of the cement content, the machine cleans itself during the operation and there is no danger of dried concrete affecting the accuracies of the next test. The main advantage of this method is that the testing is done before the concrete is laid. /TRRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/10480594
• Corporate Authors:

  Morgan-Grampian (Professional Press) Limited

  Morgan-Grampian House, Calderwood Street
  London SE18 6QH,   England 
• Authors:
  • Baxter, M
• Publication Date: 1974-11

Language

• English

Media Info

• Features: Photos;
• Pagination: p. 43-45
• Serial:
  • Civil Engineering
  • Issue Number: 819
  • Publisher: American Society of Civil Engineers
  • ISSN: 0885-7024
  • Serial URL: http://www.pubs.asce.org/ceonline/newce/html

Subject/Index Terms

• TRT Terms: Accuracy; Cement; Cement content; Charts; Concrete; Concrete tests; Electricity; Equipment; Fresh concrete; Mix design; Samples; Test procedures; Testing equipment; Tests
• Old TRIS Terms: Sample (Material)
• ITRD Terms: 4758: Cement; 6486: Chart; 4755: Concrete; 6954: Electricity; 3674: Equipment; 4750: Fresh concrete; 4714: Mix design; 6251: Sample (mater); 6255: Test; 6288: Test method
• Subject Areas: Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00125573
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Mar 29 1976 12:00AM