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Mechanical, durability and microstructure properties of cold asphalt emulsion mixtures with different types of filler

Nassar, Ahmed I.; Mohammed, Mahmoud Khashaa; Thom, Nicholas; Parry, Tony

Authors

Ahmed I. Nassar

Mahmoud Khashaa Mohammed evxmkm@nottingham.ac.uk

NICK THOM nicholas.thom@nottingham.ac.uk
Assistant Professor

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TONY PARRY tony.parry@nottingham.ac.uk
Associate Professor



Abstract

The primary aim of this study is to investigate the enhancement of Cold Asphalt Emulsion Mixtures (CAEMs) using binary and ternary blended fillers (BBF and TBF), including an in-depth assessment of the microstructure. Ordinary Portland cement (OPC), fly ash (FA) and ground granulated blast furnace slag (GGBS) were used for the BBF while silica fume (SF) was added to the BBF to obtain TBF. The mechanical and durability results indicated that the TBF was more suitable than the BBF for the production of CAEMs. The microstructural assessment indicated that the effect of BBF on the internal microstructure of CAEMs was slightly negative and more noticeable in CAEMs containing FA. It is proposed that the addition of SF to BBF mixtures can eliminate the delay in formation of hydration products caused by the bitumen emulsion. Overall, the research suggests that the use of BBF-CAEMs might be appropriate for pavements in cold climate whereas TBF-CAEMs would be effective in road pavements exposed to severe conditions both in hot and cold climates.

Journal Article Type Article
Publication Date Jul 1, 2016
Journal Construction and Building Materials
Print ISSN 0950-0618
Electronic ISSN 1879-0526
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 114
APA6 Citation Nassar, A. I., Mohammed, M. K., Thom, N., & Parry, T. (2016). Mechanical, durability and microstructure properties of cold asphalt emulsion mixtures with different types of filler. Construction and Building Materials, 114, https://doi.org/10.1016/j.conbuildmat.2016.03.112
DOI https://doi.org/10.1016/j.conbuildmat.2016.03.112
Keywords Cold Asphalt Emulsion Mixtures; Blended fillers; Stiffness modulus; Repeated load axial test; Durability; Microstructure; Delay hydration process
Publisher URL http://www.sciencedirect.com/science/article/pii/S0950061816304020
Copyright Statement Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://creativecommons.org/licenses/by-nc-nd/4.0



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