The Effects of Silica Fume and Fly Ash on the Scaling Resistance and Flexural Strength of Pavement Concretes

The aim of this study is to investigate the effects of Silica Fume (SF) and Fly Ash (FA) additives on the frost salt scaling resistance and flexural strength properties of pavement concrete. An attempt is also made to attain a more durable and higher strength concrete by a suitable combination of Ordinary Portland Cement (OPC), SF, and FA. SF and FA are used as cement replacement in proportions of 0, 5, 10%, and 0, 5, 10, 15% by weight, respectively. Flexural strength is tested after 7, 28, and 91 days of the lime saturated water curing period. Experimental results indicate that using FA only decreases while SF only slightly increases 28-day flexural strength. Conversely, using SF and FA together shows relatively more strength gain. Among all those tested, maximum 28 day flexural strength of 4.53 MPa is obtained for the mix proportion of 85% OPC + 10% FA, and 5% SF. SF significantly decreases the amount of liquid absorption by capillary suction and has a significant effect on scaling resistance. In addition, all ternary mixtures show better scaling resistance than the control mixture with 100% OPC.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14680629
• Authors:
  • Yener, Engin
  • Hinislioglu, Sinan
• Publication Date: 2011-1

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 177-194
• Serial:
  • Road Materials and Pavement Design
  • Volume: 12
  • Issue Number: 1
  • Publisher: Taylor & Francis
  • ISSN: 1468-0629
  • EISSN: 2164-7402
  • Serial URL: http://www.tandfonline.com/loi/trmp20

Subject/Index Terms

• TRT Terms: Concrete pavements; Deicing chemicals; Durability; Durability tests; Flexural strength; Fly ash; Frost; Pavement components; Silica fume
• Uncontrolled Terms: Scaling resistance
• Subject Areas: Highways; Materials; Pavements; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 01339959
• Record Type: Publication
• Files: TRIS, ATRI
• Created Date: May 18 2011 10:51AM