PROPORTIONING RCCP MIXES UNDER HOT WEATHER CONDITIONS FOR A SPECIFIED TENSILE STRENGTH

This article introduces the use of roller-compacted concrete pavements (RCCPs) as a substitute to the traditional asphalt concrete pavements that suffer from severe rutting and cracking due to heavy loading and hot weather which prevail in most of the Middle East countries. The authors used a soil compaction method (kneading compaction) to simulate compaction in the field. The variables affecting the mix proportioning of RCCP in hot weather are evaluated and discussed. These include cement content, aggregate-to-cement ratio, water-to-cement (w/c) ratio, and degree of compaction. The effects of these variables on the density, tensile, and compressive strengths were studied. Results showed that under hot weather conditions, slight alterations in material proportions should be made to arrive at the required properties of RCCP mixes. A w/c ratio of 0.45 has been found to produce the optimum density and tensile strength for concrete in hot weather under the conditions of the experiments. The primary factor that had an impact on both fresh and hardened properties is the cement content.

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• Corporate Authors:

  Elsevier

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• Authors:
  • Qasrawi, H Y
  • Asi, I M
  • Wahhab, HIA-A
• Publication Date: 2005-2

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 267-276
• Serial:
  • Cement and Concrete Research
  • Volume: 35
  • Issue Number: 2
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Compressive strength; Concrete; Concrete curing; Concrete hardening; Density; Fresh concrete; Hot weather; Mix design; Roller compacted concrete pavements; Temperature; Tensile strength; Thermodynamics; Water cement ratio
• Geographic Terms: Middle East
• Subject Areas: Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00989026
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 29 2005 12:00AM