THE PROBLEM OF WATER ABSORPTION BY LIGHTWEIGHT AGGREGATES

IT IS DESIRABLE TO BE ABLE TO ASSESS OBJECTIVELY THE ABSORPTION OF WATER BY LIGHTWEIGHT AGGREGATES. EXISTING TECHNIQUES DO NOT LEND THEMSELVES READILY TO THIS. A SIMPLE, OBJECTIVE TEST IS DESCRIBED WHICH USES THE RELATIONSHIP BETWEEN LOOSE WET BULK DENSITY AND MOISTURE CONTENT OF THE TEST SAMPLE TO DETERMINE GRAPHICALLY THE MOISTURE CONTENT CORRESPONDING TO THE SURFACE-DRY STATE. IT IS POSSIBLE TO TEST AN AGGREGATE SAMPLE AFTER ANY (UNKNOWN) EXPOSURE HISTORY. EXAMPLES ARE GIVEN OF LYTAG, AGLITE AND LECA AGGREGATES, FOR SINGLE SIZES AND GRADED SAMPLES, DRY MIXED WET-AND-DRY AND SATURATED AND, DESPITE COMPLEX BEHAVIOR EXHIBITED BY AGGREGATES CONTAINING AN APPRECIABLE AMOUNT OF VERY FINE MATERIAL, THE TEST METHOD IS SEEN TO BE SUCCESSFUL. /A/RRL/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00249831
• Supplemental Notes:
  • Vol 21, No 68, P 131-140, 10 FIG, 1 TAB, 25 REF
• Authors:
  • Lydon, F D
• Publication Date: 1969-9

Media Info

• Serial:
  • MAGAZINE OF CONCRETE RESEARCH
  • Publisher: Thomas Telford Limited
  • ISSN: 0024-9831

Subject/Index Terms

• TRT Terms: Absorption; Bulk density; Dryness; Lightweight aggregates; Moisture content; Samples; Water
• Uncontrolled Terms: Dry conditions; Wet conditions
• Old TRIS Terms: Water holding capacity
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00213101
• Record Type: Publication
• Source Agency: Road Research Laboratory /UK
• Files: TRIS
• Created Date: Sep 14 1970 12:00AM