Abstract. To promote the circular economy and the sustainable pavement construction, the feasibility of using three industrial wastes for the manu-facture of warm mix asphalt (WMA) has been analyzed. The first WMA used 5% of industrial waste rich in lignin biopolymer from the wood hard-board as a bitumen partial substitute. In the second WMA, 50% of natural filler was replaced by waste biomass...
Abstract. Re-refined engine oil bottom (REOB) is a non-distillable residuum of waste engine oil that has been used as a softening agent for asphalt binders since the 1980s. While some researchers believe in the positive effect of REOB on pavement performance, many state agencies are concerned with the potential detrimental effect of REOB. Thus, a clear understanding of the effects of REOB on...
Abstract. The current study aims to evaluate the fatigue performance of bitumen modified with low-density polyethylene (LDPE) from various sources. To achieve this, viscosity-graded (VG 30) base bitumen was modified with 3% waste plastic by volume of bitumen. The experimental program included a linear amplitude sweep test (LAS) at 15℃. The modified bitumen exhibited higher stiffness and...
Abstract. A contribution for solving the depletion problem of natural resources and, simultaneously, the abundance of urban and industrial wastes, could be its application in pavement construction. For this purpose, a laboratory study is carried out in which Non-Selected Construction and Demolition Waste (NS CDW) and polypropylene (PP) plastic waste are incorporated in hot bituminous mixtures...
Abstract. In recent years, the use of recycled plastics in road pavements has gained momentum as another possible solution to reduce global plastic waste as we move towards an increasingly circular economy. In Portugal, studies on the use of recycled plastics in asphalt mixtures have been underway since 2011, reinforced by the United Nations Sustainable Development Goals in 2015, the Chinese...
Abstract. In Singapore, about 1 million tonnes of plastic waste was generated in 2022. It was the largest amount of waste disposed in landfill with only 6% of the plastic waste was recycled. To increase the plastic recycling rate in Singapore, a study was carried out to investigate the use of recycled plastic waste in stone mastic asphalt (SMA) which is commonly used for heavy traffic...
