Serviceability during asphaltic concrete production and leaching concerns of asphalt mixture prepared with recycled paper mill sludge

Chew, J.-Wei; Poovaneshvaran, Sharvin; Hasan, Mohd Rosli Mohd; Wang, Hainian; Sani, Ashiru; Golchin, Babak

doi:10.1080/10298436.2020.1736291

Cited by 3 publications

(1 citation statement)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Previous research has shown that the implementation of recycled crumb rubber and natural rubber latex biopolymer as asphalt modifers improves the performance of road surfacing materials [1][2][3][4].Rubber-modifed asphalt mixture has superior resistance to rutting, thermal cracking, fatigue damage, and stripping and lower temperature sensitivity [5][6][7]. Compared to the conventional asphalt binder, using natural or synthetic polymers has signifcantly enhanced the binder properties [8,9].…”

Section: Introductionmentioning

confidence: 99%

The Characterisation of Fracture Resistance of Asphalt Mixtures Containing Rubber Modifiers and a Wax-Based Additive

Poovaneshvaran

Hasan

Jamshidi

et al. 2023

Advances in Materials Science and Engineering

Self Cite

View full text Add to dashboard Cite

Asphalt mixture modification with rubberised material frequently results in improved characteristics and extended service life in actual application. This research characterised the synergistic consequences of rubber modifiers (crumb rubber powder (CRP) and natural rubber latex (NRL)) and wax-based admixtures (Tough Fix Hyper (TFH)) on the performance of the asphalt mixture from the fracture energy and laboratory fracture resistance perspectives. Semicircular bending (SCB) and indirect tensile strength (ITS) tests were conducted to assess the fracture properties of the asphalt mixture samples. To prepare asphalt mixture samples, the wet method was utilised. Higher CRP levels resulted in greater strength and a longer time to attain peak force for both control and mixtures containing wax admixture, as determined by SCB. The interaction between the higher CRP or NRL content and the TFH additive enhanced the fracture resistance, indicating that the components are highly compatible. The 10L + TFH additive produced the highest fraction of energy, indicating a more significant improvement than the counterpart mixes containing the CRP modifier. In addition, incorporation of the CRP and NRL increased the fracture plastic zone (FPZ), resulting in increased fracture toughness. Therefore, the gradient of fracture toughness and fracture energy in the asphalt mix depends on the rubber type, content, and TFH. Although the higher CRP, NRL, and TFH improve the fracture energy and cracking resistance, they increase the crack initiation and propagation velocities, whereby the high bitumen stiffness makes the mixture more brittle than the control mixture. Caution should be exercised when selecting the content of rubber modifier and TFH for the asphalt pavements in low-temperature service. Also, there is a direct interconnection between fracture resistance and fracture energy in the mixtures containing CRP, NRL, and TFH. Such correlations can be used as the premise of predictive micro- and macro-models to evaluate mixture performance in terms of fracture resistance.

show abstract

Section: Introductionmentioning

confidence: 99%

The Characterisation of Fracture Resistance of Asphalt Mixtures Containing Rubber Modifiers and a Wax-Based Additive

Poovaneshvaran

Hasan

Jamshidi

et al. 2023

Advances in Materials Science and Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

Characterization of contaminant leaching from asphalt pavements: A critical review of measurement methods, reclaimed asphalt pavement, porous asphalt, and waste-modified asphalt mixtures

et al. 2022

View full text Add to dashboard Cite

Characterization of hydrophobic-treated recycled paper mill sludge in bituminous materials

Wong

Hasan²,

Leo³

et al. 2022

E3S Web Conf.

Self Cite

View full text Add to dashboard Cite

The experimental investigation of the performance of hydrophobic-treated recycled paper mill sludge (RPMS) incorporated into asphalt mixtures is presented in this paper. This research implements RPMS as a solid waste additive to partially replace the mineral filler in the asphalt mixture while practicing green asphalt technology. The raw RPMS required mechanical pre-treatments and its hydrophilic property was modified chemically. The hydrophobicity was assessed by Hydrophilic Coefficient, Water Contact Angle (WCA) and Scanning Electron Microscopy (SEM). The ethanol method, which involved the esterification of ethyl esters that utilized 7ml of waste cooking oil (WCO) and 50ml of ethanol, was adopted. In the Marshall mix design, RPMS was incorporated at 0.5% and 1.0% of the weight of aggregates. Conventional 60/70 PEN bitumen and granite aggregates were used. The optimum binder content (OBC) was evaluated and justified by its adsorption strength. The mechanical properties of asphalt mixtures were determined and compared with the Public Work Department (PWD) specifications. All the volumetric properties satisfied the standard specification by PWD for 0.5% modified RPMS asphalt mixture, and thus it is preferable as it also involved lower binder cost due to the lower OBC achieved.

show abstract

Serviceability during asphaltic concrete production and leaching concerns of asphalt mixture prepared with recycled paper mill sludge

Cited by 3 publications

References 30 publications

The Characterisation of Fracture Resistance of Asphalt Mixtures Containing Rubber Modifiers and a Wax-Based Additive

The Characterisation of Fracture Resistance of Asphalt Mixtures Containing Rubber Modifiers and a Wax-Based Additive

Characterization of contaminant leaching from asphalt pavements: A critical review of measurement methods, reclaimed asphalt pavement, porous asphalt, and waste-modified asphalt mixtures

Characterization of hydrophobic-treated recycled paper mill sludge in bituminous materials

Contact Info

Product

Resources

About