LIGHTWEIGHT STRUCTURAL CONCRETE WITH AGLITE AGGREGATE: MIX DESIGN AND PROPERTIES

This study into the use of "all-lighteight" aggregate (aglite) for making structural concrete is in two parts. The first deals with mix design, and a method utilising PFA to impart desired cohesiveness and a water-reducing admixture (conplast 337) to impart adequate workability is proposed which is capable of producing "all lightweight" aggregate concrete with 28-day compressive strength up to 50 n/sq mm. The second part discusses the results obtained for various properties of aglite concrete, madeade with cement contents from 250 to 600 kg/cu m, in the hardened state. Compressive strengths at the age of one year ranged from 43 to 60 n/sq mm and 29 to 53 n/sq mm for normal water and air-curing respectively. The tensile btrength and the modulus of elasticity are shown to increase at a decreasing rate with compressive strength, but aglite concrete shows a more brittle failure than normal concrete. The range of drying shrinkage values is comparable to that observed for concrete made with normal aggregate (crushed-rock or gravel) of a low shrinkage value. In short, "all-aglite" concrete may be used for all structural applications. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/02625075
• Corporate Authors:

  Construction Press

  Longman House, Burnt Mill
  Harlow, Essex CM20 2JE,   England 
• Authors:
  • Dhir, K
  • Mays, RGC
  • Chua, H C
• Publication Date: 1984-11

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 249-261
• Serial:
  • International Journal of Cement Composites and Lightweight Concrete
  • Volume: 6
  • Issue Number: 4
  • Publisher: Longman Group UK Limited
  • ISSN: 0262-5075

Subject/Index Terms

• TRT Terms: Admixtures; Aggregates; Cohesion; Compression; Compressive strength; Concrete; Failure; Lightweight concrete; Mix design; Modulus of elasticity; Physical properties; Properties of materials; Shrinkage; Strength of materials; Tensile strength; Tension; Water reducing agents; Workability
• Uncontrolled Terms: Concrete properties
• Old TRIS Terms: Concrete shrinkage
• ITRD Terms: 4736: Admixture; 4577: Aggregate; 5532: Compression; 5520: Failure; 4740: Lightweight concrete; 4714: Mix design; 5919: Modulus of elasticity; 5925: Properties; 4743: Shrinkage; 5544: Strength (mater); 5502: Tension
• Subject Areas: Geotechnology; Highways; Materials; Planning and Forecasting; I32: Concrete; I72: Traffic and Transport Planning;

Filing Info

• Accession Number: 00395519
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Oct 31 1985 12:00AM