Influence of Amount of Recycled Coarse Aggregates and Production Process on Properties of Recycled Aggregate Concrete

In this study recycled coarse aggregates obtained by crushed concrete were used for concrete production. Four different recycled aggregate concretes were produced; made with 0%, 25%, 50% and 100% of recycled coarse aggregates, respectively. The mix proportions of the 4 concretes were designed to achieve the same compressive strengths. Recycled aggregates were used in wet but not saturated conditions to control their fresh concrete properties, effective w/c ratio, and lower strength variability. The necessity to produce recycled aggregate concrete with low–medium compressive strength was verified due to the requirement of the volume of cement. The influence of the order of materials used in concrete production (made with recycled aggregates) with respect to improving its splitting tensile strength was analyzed. The lower modulus of elasticity of recycled coarse aggregate concretes with respect to conventional concretes was measured verifying the numeral models proposed by several researchers.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00088846
• Supplemental Notes:
  • Abstract reprinted with permission from Elsevier
• Authors:
  • Etxeberria, M
  • Vazquez, E
  • Mari, Antonio R
  • Barra, M
• Publication Date: 2007-5

Language

• English

Media Info

• Media Type: Print
• Features: Figures; References; Tables;
• Pagination: pp 735-742
• Serial:
  • Cement and Concrete Research
  • Volume: 37
  • Issue Number: 5
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Aggregates by shape and surface texture; Coarse aggregates; Compressive strength; Mechanical properties; Mix design; Proportioning; Recycled materials; Workability
• Uncontrolled Terms: Crushed concrete; Recycled aggregate concrete
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 01051322
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 6 2007 8:44PM