Effect of Particle Size of Rice Husk Ash (RHA) in Mitigating Alkali Silica Reaction (ASR) in Concrete Pavement

Alkali-silica reaction (ASR) is considered as a major concern of distresses in concrete pavements and barriers in different locations across the state of Arkansas. Such premature distresses pose a significant increase in pavement life cycle cost. On the other hand, a large amount of rice husk ash (RHA) is produced in Arkansas, which is treated as an agricultural waste. In this study, different amounts (0, 10 and 20%) of three RHA samples with nominal sizes of 600 μm (600-RHA), 150 μm (150-RHA) and 44 μm (44-RHA), and a Class C fly ash (CFA) were used to observe the effect of gradation in ASR. Mortar bars were prepared and tested as per ASTM C1567. Test results revealed that finer RHA reduced the ASR expansion of the mortar bars. Both 600-RHA and 150-RHA contributed to significant expansion due to their bulk particle size. A 10% 44-RHA and a 10% CFA were found to be the optimum. In comparison to the Control, the 10% 600-RHA and 150-RHA samples expanded the bars by 101% and 40%, respectively and the 10% 44-RHA and CFA decreased the expansion of mortar bars by 81% and 95%, respectively. Furthermore, incorporation of RHA in the concrete pavement will reduce the pavement construction and maintenance cost.

• Record URL:
  • https://doi.org/10.1016/j.ijprt.2018.08.002
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S199668141830083X
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/19966814
• Supplemental Notes:
  • © 2018 Production and hosting by Elsevier B.V. on behalf of Chinese Society of Pavement Engineering. Abstract reprinted with permission of Elsevier.
• Authors:
  • Ahsan, Mohammad Badrul
  • Hossain, Zahid
• Publication Date: 2018

Language

• English

Media Info

• Media Type: Web
• Features: Appendices; Figures; Photos; References; Tables;
• Serial:
  • International Journal of Pavement Research and Technology
  • Publisher: Chinese Society of Pavement Engineering
  • ISSN: 1996-6814
  • EISSN: 1997-1400
  • Serial URL: http://www.ijprt.org.tw/index.php
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Alkali silica reactions; Concrete pavements; Cost effectiveness; Fly ash
• Uncontrolled Terms: Mortar bar test; Particle size (Materials); Rice husk ash
• Geographic Terms: Arkansas
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01682022
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 26 2018 10:30AM