Mechanical, durability and microstructure properties of Cold Asphalt Emulsion Mixtures with different types of filler

Abstract

A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription. AbstractThe 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 indepth 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.

The development of a low carbon binder produced from the ternary blending of cement, ground granulated blast furnace slag and high calcium fly ash: An experimental and statistical approach

“…GGBS is one viable alternative SCM in the production of binary and ternary blended cements, and useful in different applications such as concrete production, soil stabilization and road construction [16][17][18]. GGBS, is a by-product of the iron industry and is extracted from blast furnaces [19].…”

Observation of asphalt binder microstructure with ESEM

“…A number of studies have looked at asphalt mixture and mastic under SEM over the years (Kim et al, 1991;Wong et al, 2007). The observation of asphalt mixture or mastic can give insight into the morphology of the binder with the aggregates and how they interact (Poulikakos & Partl, 2010), the binder film thickness (Elseifi et al, 2008) or the effect on morphology of elements introduced to the mix (Nassar et al, 2016).…”

Performance Analysis of a Cold Asphalt Concrete Binder Course Containing High-Calcium Fly Ash Utilizing Waste Material

“…All indirect tensile stiffness modulus test values are the average of 3 specimens to ensure reliability. It should be noted that Poisson's ratio of 0.35 has been adopted as recommended by(Al Nageim et al 2012;Nassar et al 2016;Dulaimi et al 2016) for such types of mixtures. All CACB mixture samples were subjected to ITSM testing at ages 3, 7, 14 and 28 days.…”