Development of Microstructure and Early-Stage Strength for 100% Cold Recycled Asphalt Mixture Treated with Emulsion and Cement

This paper aims at investigating the microstructure and early-stage (<14 days) strength formation for 100% Cold Recycled Asphalt Mixture treated with Asphalt Emulsion and Cement (CRME). First, the factors influence on early-stage strength of CRME are carefully discussed. The microstructure formation of CRME in early-stage are identified by means of Environmental Scanning Electron Microscope (ESEM) and SEM. Moreover, two approaches including accelerating the hydration of cement and accelerating the integration of asphalt emulsion are proposed to improve the early-stage strength of CRME. The results indicate that the early-stage strength formation depends mainly on integration between emulsion particles in CRME. The early-stage strength of CRME can be improved by both accelerating the hydration of cement by additives and accelerating the demulsification of asphalt emulsion by surfactant, and the addition of surfactant in CRME has better effect in improving the early-stage strength. The method of accelerating the demulsification of asphalt emulsion by surfactant is recommended in practical application, which will help to enlarge the application range of CRME in winter or cold regions.

• Record URL:
  • https://doi.org/10.1016/j.conbuildmat.2018.09.064
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0950061818322426
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09500618
• Supplemental Notes:
  • © 2018 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
• Authors:
  • Lin, Juntao
  • Huo, Lin
  • Xu, Fang
  • Xiao, Yue
  • 0000-0001-6182-5717
  • Hong, Jinxiang
• Publication Date: 2018-11-20

Language

• English

Media Info

• Media Type: Web
• Features: Figures; Photos; References; Tables;
• Pagination: pp 924-933
• Serial:
  • Construction and Building Materials
  • Volume: 189
  • Issue Number: 0
  • Publisher: Elsevier
  • ISSN: 0950-0618
  • Serial URL: http://www.sciencedirect.com/science/journal/09500618?sdc=1

Subject/Index Terms

• TRT Terms: Asphalt additives; Asphalt emulsions; Cement; Cold mix paving mixtures; Microstructure; Recycled materials; Strength of materials
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 01687427
• Record Type: Publication
• Files: TRIS
• Created Date: Nov 30 2018 9:41AM