This study aims to characterise fatigue cracking of two types waste-derived (bio-oil and LDPE) bitumen. Modified Paris’ law Griffith criterion were proposed investigate crack propagation initiation the Results show that bio-oil delays LDPE accelerates initiation, bitumen itself dominates unaged The did not take effects in altering bitumen’s performance after pressure ageing vessel (PAV) ageing....

Warm mix asphalt (WMA) has been gaining increasing popularity in recent years due to energy savings and environmental benefits. The mechanism of WMA is to use some additives or technologies to reduce the viscosity of bitumen and to modify the rheological behavior of bituminous binders, and thus improve the workability of the mixture at lower temperature. In this study a paraffin wax based addit...

Abstract Different microstructures of the same polymer-modified bitumen (PMB) were obtained by subjecting modified with styrene-butadiene-styrene (SBS) copolymer to isothermal annealing at various temperatures. The effects morphology on rheological properties SBS-modified investigated within high-temperature range. PMB quantitatively evaluated using image analysis. A dynamic shear rheometer was...

Surface hot-in place recycling of asphalt mixtures has been conducted on Finnish roads for several years. The procedure is performed either in full-lane('remix') or shorter widths ('rut-remix'). In a 2020-2021 project, different mixture types were subjected to both kinds recycling; reference mixtures, and modified with aramid fibres, FEP elastomer pellets, polymer, Storelastic rubber additive, ...

This research study aims to investigate the feasibility of incorporating high-density polyethylene waste (HDPEW) into bitumen applications. Two conventional conditions bitumen, namely, aged (AB) and virgin (VB), are rejuvenated modified, respectively, using post-consumer HDPEW sourced out bottle crates. The outcome (Pyro oil, PO-HDPEW) pyrolysis thermochemical process is used by 10, 20, 30% rej...