Implementing Waste Oils with Reclaimed Asphalt Pavement

Abstract

-The present asphalt pavement industry faces two major issues. These two major issues are the increasing demand for ecofriendly asphalt mixtures and the costs of raw materials. The use of reclaimed asphalt pavement will be an essential attempt to reduce the costs of aggregates and bitumen in the final mixture. On the other hand, the main challenge for implementing RAP (Reclaimed Asphalt Pavement) is to overcome quality issues. RAP doesn't perform like a fresh pavement since it is an aged material and needs to be improved. This puts forward the requirement for extra practices like using of rejuvenating agents. Since bitumen loses its oily constituents when it ages, the use of oil-containing additives can be effective. In this study, two kinds of waste oils were used to rejuvenate aged asphalt mixture. Optimum contents of Waste Engine Oil (WEO) and Waste Vegetable Oil (WVO) additives were determined in order to implement various RAP contents. The effects of these two oily based rejuvenators on utilization of RAP in bituminous mixtures were investigated. The results represented that the use of WEO and WVO as rejuvenators for mixtures containing RAP enhances the amount of RAP used in bituminous mixtures.

Evaluating the Change Characteristics of the Microstructure of the Modified Plant Asphalt Using Soft Computing to Improve the Road Performance for Green Environment

“…Polyphosphate is used as the modified material of plant asphalt in this study, which is also known as tetra phosphoric acid or polyphosphoric acid, and it is a colorless, transparent, and viscous liquid, which is corrosive. It is a second-class inorganic acid corrosive material [2][3][4][5], easy to deliquesce, and not crystallize, and can react with water to produce orthophosphoric acid. Its melting point is 48∼50 °C, boiling point is 856 °C, density is 2100 kg/m 3 , relative molecular weight is 337.93, and representative formula is H 6 P 4 O 13 .…”

“…In order to provide eco-friendly solution to the problem which is also cost-e ective, researchers have experimented with di erent possible solutions. In [2], authors proposed the use of reclaimed asphalt to reduce the costs of aggregates. At the same time, they overcome the quality issue by adding waste engine oil (WEO) and waste vegetable oil (WVO).…”

Effect of the use of Marpol waste as a partial replacement of the binder for the manufacture of more sustainable bituminous mixtures

“…Along the same lines, some oily wastes were studied for their use as possible rejuvenators in bituminous mixtures with high reclaimed asphalt content (Zaumanis et al 2014, Aghazadeh Dokandari et al 2017, Mamun and Al-Abdul Wahhab 2018. In this context, the palm oil fuel ash acts as a rejuvenator when used as a modifier, improving ageing resistance (Hainin et al 2014).…”

Cost-benefit Analysis of RAP Incorporated Stone Matrix Asphalt Mixtures

“…Mostly, WVO is obtained from the oil refining industries, restaurants, hotels, food processing industries, which consists of residues such as food particles, water, and nasties. Therefore, the WVO needs to be filtered to remove waste products [13,14] The WVO can be obtained at a minimal price; however, the refining process of oil for biofuels will increase the cost [6].…”