Recycled and rubberized SMA modified mixtures: A comparison between polymer modified bitumen and modified fibres

Eskandarsefat, Shahin; Dondi, Giulio; Sangiorgi, Cesare

doi:10.1016/j.conbuildmat.2019.01.045

Cited by 39 publications

(21 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These combined copolymer blends included SBS, SEBS, EVA, LDPE, LLDPE, RLLDPE and CR, as shown in Table 1, whereby "B" refers to blend and "M" to mix (e.g., B1M1 is blend 1 mix 1). The content of each polymer for the hybrid blends was selected based on commonly used polymer contents to modify bitumen by previous research [42][43][44][45][46]. A recent review by Behnood and Gharehveran stated that the most commonly used polymer additives are between 4-6% by weight of asphalt binder.…”

Section: Methodsmentioning

confidence: 99%

“…B1, B2, B3, and B4 are the polymeric blends between plastomers and SBS with three different percentage combinations (i.e., M1, M2, and 3.1.1. Tensile Test: The Interaction between Plastomers and SBS Plastomers (i.e., LDPE, LLDPE, EVA) have been suggested to increase the stiffness of the material [43], while elastomers (i.e., SBS, SEBS) are known to contribute more to the elastic behaviour [44]. Young's modulus is used to characterize the stiffness, while the elongation reflects the elastic characteristics.…”

Section: Tensile Test: the Interaction Between Plastomers And Sbsmentioning

confidence: 99%

See 1 more Smart Citation

Hybrid Polymerisation: An Exploratory Study of the Chemo-Mechanical and Rheological Properties of Hybrid-Modified Bitumen

Joohari

Giustozzi

2020

Polymers

View full text Add to dashboard Cite

In this study, the mechanical and rheological properties of hybrid polymer-modified bitumen (PMB) have been investigated. For this purpose, nine different polymers—including crumb rubber, elastomers and plastomers at varying content—were studied to evaluate their mechanical performance as single polymers, first, and as a combination of two or more polymers as a hybrid polymer blend. Subsequently, the hybrid polymer blends were added in a relatively small percentage into the base bitumen to study its influence on the rheological performance of hybrid PMB. The mechanical properties identified from the analysis of the stress-strain curve of the single polymers were the Young’s Modulus, tensile stress, and elongation at break. The chemical structure of the polymer hybrid blends was analysed using FTIR, followed by frequency sweep tests conducted using the dynamic shear rheometer (DSR) to determine the bitumen rheological properties. Results showed that hybrid PMB enhances the viscoelastic behaviour of bitumen at both low and high temperature compared to other PMBs only including single polymers.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Tensile Test: the Interaction Between Plastomers And Sbsmentioning

confidence: 99%

Hybrid Polymerisation: An Exploratory Study of the Chemo-Mechanical and Rheological Properties of Hybrid-Modified Bitumen

Joohari

Giustozzi

2020

Polymers

View full text Add to dashboard Cite

show abstract

“…The grading distribution is presented in Figure 2 and Table 2, while the rheological properties of the used bitumen are reported in Table 3. Based on previous studies and laboratory tests on the same SMA mix design, the optimum binder content was fixed at 6% on the weight of aggregates, while the amount of filler was 10% on the weight of aggregates [38].…”

Section: Sma MIX Designmentioning

confidence: 99%

A Preliminary Laboratory Evaluation on the Use of Shredded Cigarette Filters as Stabilizing Fibers for Stone Mastic Asphalts

Tataranni

Sangiorgi

2021

Applied Sciences

Self Cite

View full text Add to dashboard Cite

Cigarette butts can be considered as one of the most common contemporary sources of waste, considering the large consumption of cigarettes all over the world. Despite the fact that different solutions have been developed and tested in the recent years aiming to recycle them, cigarette butts are currently landfilled and incinerated. Following the circular economy principles, the experimental application proposed in this paper is an exploratory investigation on the use of shredded cigarette filters as sustainable alternative to the addition of fibers into Stone Mastic Asphalts (SMAs). This represents the preliminary step for a wider research project, aiming to find a possible recycling solution for cigarette butts as fibers in bituminous materials. The use of fibers is a common and well-established solution for the production of high bitumen content mixtures. The fibers have a double function: acting, generally, as a stabilizing agent and, where possible, improving the mechanical performance of the bituminous mixtures. In the present research, two different SMAs were produced and tested aiming to analyze the effects given by the addition of the shredded cigarette filters. The first asphalt concrete, produced with traditional cellulose fibers was taken as a reference mixture, while the experimental mixture was produced with the shredded cigarette filters. The data highlight interesting and promising results for future development, making the use of waste cigarette filters a potential eco-friendly alternative to common cellulose fibers for SMAs.

show abstract

“…Shell handbook [87] explained its behavior as an “elastic mineral aggregate”. Eskandarsefat et al [88], presented a new procedure to add crumb rubber with cellulose fibers to analyze the composite behavior; it was stated that rubber increases the ductility and also improves the stiffness of the mix at high temperatures. Sangiorgi et al [57] presented a study of adding crumb rubber to PAMs.…”

Section: Additivesmentioning

confidence: 99%

“…If cellulose fibers are well dispersed, a high absorption of binder by cellulose fibers is observed, which may be responsible for lesser binder drainage and lesser permeability. Eskandarsefat et al [88] found that the mixtures with cellulose fibers exhibited high Marshal stability due to the high binder absorption ability of cellulose fibers.…”

Section: Additionsmentioning

confidence: 99%

Incorporation of Additives and Fibers in Porous Asphalt Mixtures: A Review

2019

View full text Add to dashboard Cite

Despite the numerous benefits for preserving the hydrological cycle, permeable pavement systems (PPSs) found their major application in parking spots and for light traffic scenarios due to their limited durability and strength. To make the PPSs suitable for heavy traffic conditions without significant distresses, research is shifting toward the adoption of novel binders and additives for designing multifunctional porous asphalt mixtures which make up the surface course of PPSs. Certain additives are well known for enhancing the durability of dense graded asphalt mixtures and improving fatigue and rutting resistance. However, the studies on the influence of additives on abrasion resistance and binder draindown, which are the common problems in porous asphalt mixtures (PAMs), are still not well established. This paper summarizes best practices performed on PAMs and recommends possible future research directions for its improvement. Particular emphasis is placed on strength and resilience of PAMs by incorporating additives like nanosilica, crumb rubber, warm-mix additives, fibers (such as cellulose, glass, steel, and synthetic fibers), and some eco-friendly materials. It was found that different additives seem to have different effects on the properties of PAMs. Moreover, the combination of additives has synergistic benefits for the performance of PAMs, especially in urban pavements.

show abstract

Recycled and rubberized SMA modified mixtures: A comparison between polymer modified bitumen and modified fibres

Cited by 39 publications

References 15 publications

Hybrid Polymerisation: An Exploratory Study of the Chemo-Mechanical and Rheological Properties of Hybrid-Modified Bitumen

Hybrid Polymerisation: An Exploratory Study of the Chemo-Mechanical and Rheological Properties of Hybrid-Modified Bitumen

A Preliminary Laboratory Evaluation on the Use of Shredded Cigarette Filters as Stabilizing Fibers for Stone Mastic Asphalts

Incorporation of Additives and Fibers in Porous Asphalt Mixtures: A Review

Contact Info

Product

Resources

About