The use of natural rubber latex as a renewable and sustainable modifier of asphalt binder

Wen, Yong; Wang, Yuhong; Zhao, Kecheng; Sumalee, Agachai

doi:10.1080/10298436.2015.1095913

Cited by 84 publications

(40 citation statements)

References 15 publications

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“…Natural rubber latex has been applied in the bitumen industry for over 30 years and is perceived to have potential for improving bitumen binder performance by improving thermal sensitivity, flexibility, stability, and stripping. In terms of thermal sensitivity, while at low temperatures it helps to dissipate the developed stress, preventing asphalt concrete cracking, at high temperatures it acts as a membrane, controls the asphalt flow, enhancing shear resistance [80]. In addition, its inherent elastomer properties proved that natural rubber latex has great potential for improving the long-term pavement performance of asphalt concrete [81].…”

Section: Natural Rubbermentioning

confidence: 99%

Bitumen and Bitumen Modification: A Review on Latest Advances

et al. 2019

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This synthesis explores the state-of-the-knowledge and state-of-the-practice regarding the latest updates on polymer-modified bitumens (PmBs). The information in this study was gathered from a thorough review of the latest papers in the literatures related to modified bituminous materials, technologies, and advances. For this purpose, the paper is presented in two principle sections. In the first part, the bitumen itself is investigated in terms of chemical structure and microstructural systems. In the second part, the paper focuses on bitumen modification from different aspects for assessing the effectiveness of the introduced additives and polymers for enhancing the engineering properties of bitumen in both paving and industrial applications. In conclusion, the knowledge obtained in this study has revealed the importance of the chemical composition of base bitumen for its modification. It can be declared that while some polymers/additives can improve one or some aspects of neat bitumen properties, they can lead to compatibility problems in storage and production. In this respect, several studies showed the effectiveness of waxes for improving the compatibility of polymers with bitumen in addition to some benefits regarding warm mix asphalt (WMA) production.

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Section: Natural Rubbermentioning

confidence: 99%

Bitumen and Bitumen Modification: A Review on Latest Advances

et al. 2019

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“…Natural rubber is also employed to improvise the general trends in properties of bitumen [27]. In regard to the efficiently recycled waste polyurethane foam, researchers have previously developed and analyzed its general employment in mortars [28] and lightweight range plaster [29]. As an efficient substitute for aggregate, it is employed in flexible pavement roads [30].…”

Section: Literature Reviewmentioning

confidence: 99%

Saving Energy in the Transportation Sector: An Analysis of Modified Bitumen Application Based on Marshall Test

Shah

Arshad²,

Waqar³

et al. 2018

Energies

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Energy consumption and material production are two major factors associated with the road construction industry. Worldwide, millions of tons of hot mix asphalt production consume a huge amount of fuel as an energy source in terms of quantity and cost to achieve the standard temperature of up to 170 °C during the mixing process. Modification of bitumen can not only reduce its usage but also the consumption of energy (fuel) during the asphalt mix production process at low temperatures. This study provides a method to save energy by proposing the addition of bitumen modifier in the road construction sector. Furthermore, to make it compatible with the field conditions for road construction, stability analysis is executed on the prepared samples by partially replacing the bitumen with polyurethane foam (PUF) and plastic waste (PW) (at 10%, 20%, 30%, 40%, and 50%). Experimental results demonstrate a reasonable saving in the amount of energy (33%) and material (40% bitumen) used and showed that similar strength of developed asphalt mix can be achieved using PUF. An extensive calculation concludes that these savings could make a huge difference in construction economics of mega road infrastructure projects, especially during an energy crisis.

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“…The utilization of biomass and bio-waste products to boost asphalt binder properties has been investigated by various researchers [7][8][9][10]. Researchers have studied natural rubber latex (NRL) applications as a biopolymer [10][11][12][13][14][15] primarily to enhance the rheological characteristics of asphalt binders at varying temperatures and loading conditions. In this context [14] identified that a modified asphalt binder using NRL at different percentages resulted in enhanced resistance to both rutting and fatigue compared to the specimens fabricated utilizing base asphalt binder.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have studied natural rubber latex (NRL) applications as a biopolymer [10][11][12][13][14][15] primarily to enhance the rheological characteristics of asphalt binders at varying temperatures and loading conditions. In this context [14] identified that a modified asphalt binder using NRL at different percentages resulted in enhanced resistance to both rutting and fatigue compared to the specimens fabricated utilizing base asphalt binder. The studies mostly recommended the optimal amount of NRL to be between 5%-7% by weight of the binder [12,14,15].…”

Section: Introductionmentioning

confidence: 99%

“…In this context [14] identified that a modified asphalt binder using NRL at different percentages resulted in enhanced resistance to both rutting and fatigue compared to the specimens fabricated utilizing base asphalt binder. The studies mostly recommended the optimal amount of NRL to be between 5%-7% by weight of the binder [12,14,15]. NRL was reported to be an effective modifier resulting in increased rutting resistance of asphalt binder at low and intermediate temperatures [12,14,16].…”

Section: Introductionmentioning

confidence: 99%

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Storage Stability and Morphology of Latex Modified Bitumen

Usman¹,

Izzaty²,

Ibrahim³

et al. 2019

IJITEE

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Bitumen modification is done to enhance the properties of bitumen related to elasticity, temperature susceptibility, softening point etc. This research intends to assess the effects of natural rubber latex (NRL) in liquid form as a bitumen modifier. Conventional tests, temperature susceptibility and phase separation due to hot storage were investigated using two separate mixing speeds of 1200 and 1300 revolution per minutes (rev/min). Morphology due to the addition of NRL has also been explored utilizing Atomic Force Microscopy (AFM). NRL was incorporated into the bitumen by weight of the binder for the modification at three different amounts (i.e. 3%, 5% and 6%). Based on the softening point, penetration value, temperature susceptibility and storage stability the latex-modified asphalt binder were analyzed. Results of the investigation showed that owing to enhancement in viscoelastic properties, the latex-modified asphalt binder will not undergo phase separation during hot temperature storage. Meanwhile, a uniform dispersed network was indicated by the morphological analysis with the presence of three phases of para, peri and cata. It can be deduced from the results obtained that the latex-modified asphalt binders will perform better in terms of softening point, penetration value and susceptibility due to temperature.

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The use of natural rubber latex as a renewable and sustainable modifier of asphalt binder

Cited by 84 publications

References 15 publications

Bitumen and Bitumen Modification: A Review on Latest Advances

Bitumen and Bitumen Modification: A Review on Latest Advances

Saving Energy in the Transportation Sector: An Analysis of Modified Bitumen Application Based on Marshall Test

Storage Stability and Morphology of Latex Modified Bitumen

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