Performance evaluation and behavior of microsurfacing with recycled materials

Abstract

Road networks play a vital role in the development of country's economy. It is necessary to develop new technologies to improve the performance and safety of the roads. Added to that, it is necessary to enhance the evolution of the roadways over time in terms of maintaining its surface while respecting the challenges of sustainable development. Microsurfacing is one of the techniques used to satisfy these challenges. However, there is very little information on the evolution and behavior of the product on short and long term, and there is no information on the use of recycled materials in the latter. In this context, this study aims to study and improve the performance of mixtures of microsurfacing with recycled materials. After the development of an adapted accelerated aging method on Microsurfacing, materials were prepared in lab with reclaimed asphalt pavement (RAP) and with recycled asphalt shingles. It was shown that it's possible to prepare microsurfacing with 100% RAP while respecting all International Slurry Surfacing Association (ISSA) standards. The results have shown that the filler's characteristics have a big impact on the rutting resistance of those mixes. Procedures were developed during this project to measure the water sensitivity of the mixtures and their behavior over time.

Quick-traffic slurry surfacing mix with orthophosphoric acid

“…The most popular for the use in emulsion still remains the hydrochloric acid (НСl). For its part, bitumen as per technological method of productioncan be used as oxidized or distilled (Zulu et al, 2018;Broughton et al, 2012;Labi et al, 2007;Yu et al, 2017;Watson and Jared, 1998;Smith and Beatty, 1999;Arbia et al, 2016;Robati et al, 2013;Giorgi et al, 2016;Mahmoud et al, 2015;Hwan et al, 2015). But for this technology, distillation bitumen from heavy highresinous, low-paraffinic oil, usually from Venezuelan fields is optimal (Giorgi Claude et al, 2016;Pyshyev et al, 2015;Sidun et al, 2021).The topic of using oxidized bitumens in slurry surfacing technologies causes interest both among the producers and the scientists.…”

An In-Depth Evaluation of Micro-Surfacing Treatment

“…These studies observed that any amount of RAP from 0 to 100% can be used in the mixture while the recommended amount of RAS to be added to the mixture is 17%. Furthermore 90% of RAP and 10% of RAS can be added to the micro-surfacing mixture while still be within the limits specified by ISSA guidelines [27,28]. Micro-surfacing has a quick set time thereby allowing opening to traffic in 1 hour or less [3].…”

Effect of Process Control Parameters on the Workability and Strength Characteristics of Microsurfacing Mix

“…In the mix design stage, a cohesion test is used to determine the minimum mineral filler content. However, other than the mineral filler content, several other factors also contribute to the strength evolution in the microsurfacing mix, as shown in Figure 1 (11)(12)(13)(14)(15)(16)(17). A study on fillermastic interaction by Robati et al (6) pointed out that the rate of cohesion development was higher for a higher pH of filler, a higher zeta potential, and a higher methylene blue value.…”