scholarly journals Marshall properties of waste polymer and nanoclay modified bitumen

2014 ◽  
Vol 12 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Mohammed Sadeque ◽  
K.A. Patil
Keyword(s):  
Construction Materials ◽  
Crumb Rubber ◽  
Low Density Polyethylene ◽  
Waste Plastics ◽  
Modified Bitumen ◽  
Waste Tyre ◽  
Waste Polymer ◽  
Marshall Stability ◽  
Polymer Modified Bitumen ◽  
Montmorillonite Nanoclay

Polymer modified bitumen is emerging as one of the important construction materials for flexible pavements. The addition of polymers in bitumen improves the deformational stability and durability of bitumen. Also Montmorillonite nanoclay has been successfully used as additive in polymer to significantly improve the thermal stability and mechanical properties. The present study, the effect of waste low density polyethylene (LDPE), polypropylene (PP) obtained from waste carry bag, crumb rubber obtained from Waste tyre (CR)and nanoclay (MMT) on Marshall stability have been evaluated. Waste plastics, whose disposal is a matter of concern can be used successfully to modify the bitumen, these waste polymers are added in 2%, 4% and 6% whereas nanoclay is added in 1,2 and 3 % in 60/70 penetration grade bitumen and its effect on stability and flow of bitumen are evaluated. The result of experimental study shows that there is significant improvement in the Marshall Stability of bitumen due addition of waste polymer and nanoclay.

Utilization of Waste Plastics in Stone Mastic Asphalt for Infrastructural Applications

2017 ◽  
Vol 902 ◽  
pp. 55-59 ◽  
Author(s):  
S.F. Wong ◽  
A.A. Htwe ◽  
S.H. Oh ◽  
T.Y. Leo ◽  
J. Cheng ◽  
...  
Keyword(s):  
Asphalt Mixture ◽  
Waste Plastics ◽  
Underground Construction ◽  
Modified Bitumen ◽  
Mastic Asphalt ◽  
Stone Mastic Asphalt ◽  
Polymer Modifier ◽  
Marshall Stability ◽  
Polymer Modified Bitumen ◽  
Recycled Low Density Polyethylene

This paper reports an experimental study on the use of waste plastics in stone mastic asphalt (SMA) for infrastructural applications (e.g. roads, carparks and underground construction). The binders investigated were conventional bitumen, target bitumen (polymer modified bitumen) and waste plastics (recycled low-density polyethylene LDPE of 5 wt% and 10 wt% blends). The properties of bitumen were assessed based on its penetration value and softening point; while the performance of asphalt premix (or asphalt mixture) was evaluated based on its Marshall stability, flow and quotient. The asphalt mixture incorporating waste plastics (10 wt% LDPE blend) as polymer modifier could be a promising material for use in SMA for infrastructural applications.

Can crumb rubber modifier effectively replace the use of polymer- modified bitumen in asphalt mixture?

2021 ◽  
pp. 1-16
Author(s):  
Lily D. Poulikakos ◽  
William Buttlar ◽  
Nicolas Schüwer ◽  
Davide Lo Presti ◽  
Tobias Balmer ◽  
...  
Keyword(s):  
Asphalt Mixture ◽  
Crumb Rubber ◽  
Modified Bitumen ◽  
Polymer Modified Bitumen

scholarly journals Mechanical Properties of Crumb Rubber and Basalt Fiber Composite Modified Porous Asphalt Concrete with Steel Slag as Aggregate

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2552
Author(s):  
Chao Chai ◽  
Yongchun Cheng ◽  
Yuwei Zhang ◽  
Bing Zhu ◽  
Hang Liu
Keyword(s):  
Mechanical Properties ◽  
Asphalt Concrete ◽  
Steel Slag ◽  
Basalt Fiber ◽  
Crumb Rubber ◽  
Modified Bitumen ◽  
Porous Asphalt ◽  
Splitting Test ◽  
Porous Asphalt Concrete ◽  
Polymer Modified Bitumen

This paper studies the mechanical properties of porous asphalt concrete with styrene-butadiene-styrene (SBS) polymer modified bitumen as the binder, steel slag as the aggregate and crumb rubber and basalt fiber as modifiers. First, the appearance, mechanics, chemical composition and high-temperature stability of steel slag were studied by some equipment. Then, three kinds of porous asphalt concrete with SBS polymer modified bitumen as binder were produced, Namely, crumb rubber modified porous asphalt concrete (CR-PAC), basalt fiber modified porous asphalt concrete (BF-PAC), and basalt fiber and crumb rubber composite modified asphalt concrete (CM-PAC). Finally, the properties of the three kinds of modified PACs were studied through the Marshall test, freeze-thaw splitting test, low-temperature splitting test, permeability test, and creep test. The results showed that the crush value and abrasion value of steel slag are 15.1% and 13.5%, respectively; it has excellent strength and abrasion. In addition, the steel slag shows a porous structure and it provides an interface basis for a better bond with bitumen. For the three PACs, the results showed that the Marshall stability, water stability, and low-temperature crack resistance of CM-PAC are all the best Furthermore, CM-PAC has better rutting resistance than two single modified PACs, based on creep test results. The CM-PAC in this study can be used as a new type of pavement material.

Modeling of Polypropylene Modified Bitumen Mix Design Results Using Regression Analysis

2017 ◽  
pp. 256-275
Author(s):  
Kaval Chhabra ◽  
Divesh Agrawal ◽  
Saladi S. V. Subbarao
Keyword(s):  
Unit Weight ◽  
Waste Plastics ◽  
Test Results ◽  
Modified Bitumen ◽  
Modeling Framework ◽  
Air Voids ◽  
Marshall Test ◽  
Input Variables ◽  
Marshall Stability ◽  
Plastic Content

This study investigates the effects of mixing Polypropylene waste plastics in the bituminous mix for the design of Flexible Pavement. Since, obtaining Marshall Test results from the bituminous mix is time-consuming, so if the practitioners measure the values of stability and flow by mechanical testing, other computations can be done by applying simple mathematical calculations. So, this study carried out stability and flow tests on different specimens made with varying bitumen and polypropylene plastic content. From the initial test results, the optimum bitumen and plastic contents are found. Further, the test results obtained from Marshall Test are modelled by identifying various input variables, which are various physical properties of the mix such as plastic content, bitumen content, air voids and unit weight. The regression modeling framework is adopted in this study to predict the Marshall stability and flow value. Since the developed models have yielded good results, these can be effectively used in parameter estimation, and thus aids the future researchers.

scholarly journals Performance Evaluation of Modified Bitumen Using EPS Beads for Green and Sustainable Development of Polymer-Based Asphalt Mixtures

Proceedings ◽  
2020 ◽  
Vol 69 (1) ◽  
pp. 36
Author(s):  
Muhammad Kashif Anwar ◽  
Syyed Adnan Raheel Shah ◽  
Muhammad Ahmed Qurashi ◽  
Muhammad Hasnain Saeed ◽  
Aqsa Nisar ◽  
...  
Keyword(s):  
Asphalt Concrete ◽  
Expanded Polystyrene ◽  
Infrastructure Development ◽  
Modified Bitumen ◽  
Modified Asphalt ◽  
Different Types ◽  
Economic Infrastructure ◽  
The Stability ◽  
Marshall Stability ◽  
Polymer Modified Bitumen

The increasing costs of virgin content, decreasing resources, and growing plastic waste have shifted the research momentum towards green and sustainable road pavements. Hence, in recent years, various researchers have worked on the utilization of different types of plastic wastes in asphalt concrete by replacing it with binder content. Under this premise, this study examines the effect of expanded polystyrene beads (EPS) as a replacement to the binder at seven different dosages ranging from 5% to 50%. The bitumen of 60/70 grade was utilized in this study. The fresh properties of polymer-modified bitumen were checked and compared to that of conventional specimens. The mechanical properties of all specimens were investigated in terms of Marshall Stability properties. The results indicated that the adding of PEB improves the stability of modified asphalt concrete. Furthermore, the addition of EPS by substituting bitumen content could be a promising way to reduce the environmental impact of bitumen, and will also help in economic infrastructure development.

A Novel Approach to Recycle the Waste Plastics by Bitumen Modification for Paving Application

2011 ◽  
Vol 356-360 ◽  
pp. 1763-1768 ◽  
Author(s):  
Moumita Naskar ◽  
Tapan Kumar Chaki ◽  
Kusum Sudhkar Reddy
Keyword(s):  
Optical Microscopy ◽  
Storage Stability ◽  
Consumer Products ◽  
Waste Plastics ◽  
New Materials ◽  
Spectroscopy Analysis ◽  
Modified Bitumen ◽  
Novel Approach ◽  
Polymer Modified Bitumen ◽  
Bitumen Modification

Recycling of waste plastics (WP) denotes an effectual method to dispose the post-consumer products for possible alternative way to obtain new materials with good properties. With this aim the influences of WP and maleic anhydride (MA) grafted WPs (MA-g-WP) were investigated as the bitumen modifiers for paving applications. Fourier transform infrared (FTIR) spectroscopy analysis established the effective grafting of MA with the waste plastic (WP). Polymer modified bitumen (PMB) binders were analyzed under scanning electron microscopy (SEM) and optical microscopy (OP) in an effort to characterize the bitumen/modifier interphase morphology. The conventional rheological tests such as penetration test, softening point, and ductility results indicate that the degree of polymer modifications are function of the nature of modifier, bitumen–modifier compatibility, and modifier concentration. It has also been confirmed that the morphology observed by SEM and optical microscopy revealed the compatibility between MA-g-WP and bitumen, and the storage stability of binder was improved significantly compared with WP modified bitumen (WPMB) binders. Consequently, the use of grafted modifier with polar site can be considered as a suitable alternation for modification of binder in pavement by expecting their chances for better performance during service.

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

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 945 ◽  
Author(s):  
Ilya Binti Joohari ◽  
Filippo Giustozzi
Keyword(s):  
Rheological Properties ◽  
Mechanical Performance ◽  
Strain Curve ◽  
Crumb Rubber ◽  
Hybrid Polymer ◽  
Stress Strain Curve ◽  
Modified Bitumen ◽  
Elongation At Break ◽  
Polymer Hybrid ◽  
Polymer Modified Bitumen

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.

The Influence of Crumb Rubber on Modified Bitumen Properties

2017 ◽  
Author(s):  
Ovidijus Šernas ◽  
Donatas Čygas ◽  
Audrius Vaitkus ◽  
Vytautė Gumauskaitė
Keyword(s):  
High Temperature ◽  
Permanent Deformation ◽  
Fatigue Cracking ◽  
Crumb Rubber ◽  
Asphalt Binders ◽  
Modified Bitumen ◽  
High Temperature Properties ◽  
Modified Asphalt ◽  
Study Results ◽  
Polymer Modified Bitumen

Rubber derived from grinding of recycled cars and trucks tyres may be successfully used as a bitumen modifier. Number of researches reported sufficient characteristics of rubber modified asphalt binders or modified asphalt mixes in terms of improved permanent deformation and fatigue cracking. The behavior of crumb rubber asphalt binders depends on several factors, such as modification method, rubber content and size, modification temperature, mixing speed and time applied during the digestion process. The aim of this study is to evaluate the effect of crumb rubber amount and type on modified bitumen low and high temperature properties. This paper presents results of unmodified bitumen, crumb rubber crumb rubber and polymer modified bitumen. Low and high temperature properties have been evaluated using bending beam rheometer and dynamic shear rheometer. Moreover, softening point and viscosity tests have been performed. The study results revealed that crumb rubber modified bitumen performed better than pure bitumen and similarly to polymer modified bitumen.

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