High strength and good durability of stabilized dolomite fines

Issam Qamhia, Erol Tutumluer, Heather Shoup, Debakanta Mishra, Hasan Ozer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Dolomite and limestone are two most widely quarried carbonate aggregates in the State of Illinois available for use as pavement materials. In particular, dolomites are believed to have mineralogical compositions that can provide improved durability and functionality for certain pavement applications requiring better quality materials. This paper presents two case studies where dolomitic aggregates were utilized in closely-monitored field test sections and showed superior performance when compared to limestone aggregates. The first section is for dolomitic aggregate Quarry By-products (QB) used as cement-stabilized base/subbase in low to medium volume roads, while the second case is for dolomite used as an unbound material for a gravel (unsurfaced) road application. The performances of pavement sections with dolomite aggregate and their durability aspects are compared to those of limestone sections. Preliminary findings indicate that dolomitic fines contributed to improved durability and/or higher strength gain due to delayed reactions associated with carbonate cementation governed by 'dissolution precipitation' reactions when exposed to temperature and moisture changes induced by freeze-thaw cycles.

Original languageEnglish (US)
Title of host publicationAdvances in Materials and Pavement Performance Prediction II - Contributions to the 2nd International Conference on Advances in Materials and Pavement Performance Prediction, AM3P 2020
EditorsA. Kumar, A.T. Papagiannakis, A. Bhasin, D. Little
PublisherCRC Press/Balkema
Pages77-81
Number of pages5
ISBN (Electronic)9780367461690
StatePublished - 2020
Event2nd International Conference on Advances in Materials and Pavement Performance Prediction, AM3P 2020 - San Antonio, United States
Duration: May 27 2020May 29 2020

Publication series

NameAdvances in Materials and Pavement Performance Prediction II - Contributions to the 2nd International Conference on Advances in Materials and Pavement Performance Prediction, AM3P 2020

Conference

Conference2nd International Conference on Advances in Materials and Pavement Performance Prediction, AM3P 2020
Country/TerritoryUnited States
CitySan Antonio
Period5/27/205/29/20

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanics of Materials
  • Materials Science(all)

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