Rheology of waste plastic fibre-modified bitumen

Kumar, Praveen; Garg, R

doi:10.1080/10298430903255296

Cited by 53 publications

(18 citation statements)

References 10 publications

(8 reference statements)

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“…Note: the symbol "-" identifies that no literature studies on bitumen provided quantitative indications of that specific property. [8,180,190,196,197] G* (kPa) at 1 rad/s 1. The blending conditions and composition of both polymer and binder have a significant effect on properties and performance of plastomers-modified bitumen blends.…”

Section: Polyethylene (Pe) Modification Of Bitumenmentioning

confidence: 99%

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

2021

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The failure of bituminous pavements takes place due to heavy traffic loads and weather-related conditions, such as moisture, temperature, and UV radiation. To overcome or minimize such failures, a great effort has been put in recent years to enhance the material properties of bitumen, ultimately improving field performance and increasing the pavement service life. Polymer modification is considered one of the most suitable and by far the most popular approach. Elastomers, chemically functionalised thermoplastics and plastomers * (* Note: notwithstanding the fact that in Polymer Science the word ‘plastomer’ indicates a polymer with the simultaneous behaviour of an elastomer and plastics (thermoplastics), this paper uses the term ‘plastomer’ to indicate a thermoplastic polymer as it is more commonly found in Civil and Pavement Engineering.) are the most commonly used polymers for bitumen modification. Plastomers provide several advantages and are commonly acknowledged to improve high-temperature stiffness, although some of them are more prone to phase separation and consequent storage instability. Nowadays, due to the recent push for recycling, many road authorities are looking at the use of recycled plastics in roads. Hence, some of the available plastomers—in pellet, flakes, or powder form—are coming from materials recycling facilities rather than chemical companies. This review article describes the details of using plastomers as bitumen modifiers—with a specific focus on recycled plastics—and how these can potentially be used to enhance bitumen performance and the road durability. Chemical modifiers for improving the compatibility between plastomers and bitumen are also addressed in this review. Plastomers, either individual or in combination of two or three polymers, are found to offer great stiffness at high temperature. Different polymers including HDPE, LDPE, LLDPE, MDPE, PP, PS, PET, EMA, and EVA have been successfully employed for bitumen modification. However, each of them has its own merit and demerit as thoroughly discussed in the paper. The recent push in using recycled materials in roads has brought new light to the use of virgin and recycled plastomers for bitumen modification as a low-cost and somehow environmental beneficial solution for roads and pavements.

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Section: Polyethylene (Pe) Modification Of Bitumenmentioning

confidence: 99%

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

2021

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“…Other authors [61] have applied this test in asphalt mortars with fibers; Table 4 shows the results of cone sink depth and shear stress for different types of fibers. Rheological properties can be improved with the addition of fibers either in the mastic or in the binder [67]. Mohammed et al [5] found a marked influence of fibers on the complex modulus (G * ) of binders with 1% and 2% fibers at low frequencies and high temperatures (50°C -70°C).…”

Section: Characterization Of Fibers In Bitumen At Intermediate and High Temperaturementioning

confidence: 99%

Mechanical performance of fibers in hot mix asphalt: A review

Slebi-Acevedo

Lastra-González

Pascual-Muñoz

2019

Construction and Building Materials

165

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The use of fibers in hot mix asphalt (HMA) has become a much more attractive alternative for the construction of road pavements. Numerous studies have shown that the incorporation of fibers in the mixture improves fatigue resistance, permanent deformation and stiffness. The aim of this paper is to present a review of the mechanical impact of fibers in HMA by analyzing their reinforcement effect in a qualitative and quantitative manner. Fiber properties and characterization tests on fiber-modified bitumen are discussed. Quantities, blending procedures and performance of bituminous mixtures with different types of fibers are presented. Results of mechanical improvement are displayed. Based on the current research results, depending on the properties and the type of mixture in which they are used, each type of fiber seems to improve certain parameters more than others. Coconut fibers and waste fibers are described as environmentally friendly alternatives.

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“…A range of recycled plastics was used to modify asphalt binders [13][14][15]. Kumar and Garg [16] investigated the rheology of waste plastic-fiber bitumen. It was found that the key properties of asphalt, such as penetration depth, softening point and ductility, improved with the addition of the waste fibers.…”

Section: Introductionmentioning

confidence: 99%

Cellulose Microfibril and Micronized Rubber Modified Asphalt Binder

Danladi

Vallabh

et al. 2021

Fibers

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Cellulose microfibrils (CMFs) and micronized rubber powder (MRP) can be derived from low or negative-cost agricultural/industrial waste streams and offer environment-friendly and cost-effective pathways to develop engineering products. This study investigated the efficacy of adding these micromodifiers on the performance characteristics of asphalt binders. In this work, samples were produced using a mixture of slow-setting anionic asphalt emulsion with various combinations of MRP (at 0, 2 and 10 wt %) and four types of CMFs (hydrophobic and hydrophilic with crystalline ratios of 86% and 95%) at 0, 2 and 5 wt %. The performance of modified asphalt samples was assessed by penetration depth (PD), softening point (SP), and penetration index (PI). Linear regression analysis showed that adding CMFs and/or MRP reduced PD and increased SP values. The type of CMFs significantly affected the performance, which becomes more distinct with the increased weight content of CMFs. While hydrophilic CMFs caused increases in SP and PI values, no clear trend was seen to determine the effect of CMF crystallinity. It was also discovered that the combined addition of CMF and MRP achieved similar PI values at lower total weight content compared to using MRP alone.

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Rheology of waste plastic fibre-modified bitumen

Cited by 53 publications

References 10 publications

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

Sustainable Polymers from Recycled Waste Plastics and Their Virgin Counterparts as Bitumen Modifiers: A Comprehensive Review

Mechanical performance of fibers in hot mix asphalt: A review

Cellulose Microfibril and Micronized Rubber Modified Asphalt Binder

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