scholarly journals Effect of Aging on Chemical Composition and Rheological Properties of Neat and Modified Bitumen

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4066 ◽  
Author(s):  
Rita Kleizienė ◽  
Miglė Panasenkienė ◽  
Audrius Vaitkus
Keyword(s):  
Rheological Properties ◽  
Mechanical Performance ◽  
Strain Range ◽  
Attenuated Total Reflection ◽  
Long Term Effects ◽  
Modified Bitumen ◽  
Flame Ionization ◽  
Effects Of Aging ◽  
Styrene Butadiene ◽  
Polymer Modified Bitumen

The aim of this research was to define the effect of oxidative aging on the chemical and rheological properties of neat and styrene-butadiene-styrene (SBS) polymer-modified bitumen. The experimental research had two objectives: firstly, the short and long-term effects of aging on the properties of neat and polymer-modified bitumen were investigated. Then, the aging indexes based on chemical and rheological properties to describe the age of unknown bitumen were established. Aging characteristics such as the Gaestel index, sulfoxide and carbonyl indexes, linear viscoelastic strain range, crossover temperature, and Glover–Rowe parameter were analysed for laboratory aged and naturally aged neat and polymer-modified bitumen. The functional composition of aged bitumen was evaluated by measuring absorption with Fourier transform infrared (FT-IR) attenuated total reflection (ATR) spectrometer. The saturates, aromatics, resins, and asphaltenes (SARA) fractions were determined with thin layer chromatography with flame-ionization detection (TLC-FID) to determine the colloidal instability index (Gaestel index). Finally, the complex shear modulus was determined with dynamic shear rheometer (DSR) to evaluate the influence of aging on the bitumen mechanical performance.

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.

Morphology and Rheological Analysis of Nanoclay in Polymer Modified Bitumen

2012 ◽  
Vol 509 ◽  
pp. 155-161 ◽  
Author(s):  
Ji Zhe Zhang ◽  
Martin Van de Ven ◽  
Shao Peng Wu
Keyword(s):  
Particle Size ◽  
Fluorescence Microscopy ◽  
Rheological Properties ◽  
Rheological Behaviour ◽  
Dynamic Shear ◽  
Polymer Particles ◽  
Modified Bitumen ◽  
Rheological Analysis ◽  
Fixed Proportion ◽  
Polymer Modified Bitumen

This paper investigated the influence of nanoclay on the properties of polymer modified bitumen(PMB). The nanoclay-polymer modified bitumen has been produced by mixing a standard 70/100 pen bitumen with polymer at a fixed proportion and then mixed with different amount of nanoclay. The rheological behaviour of the samples have been determined using dynamic shear rheometer. The morphology of the samples as well as the distribution of polymer and nanoclay throughout the bitumen have been characterized with a fluorescence microscopy. The result indicate that the rheological properties of nanoclay-polymer modified bitumens dependent on the percentage nanoclay. The morphology result shows that dispersed polymer particles existed in continuous bitumen phase and the addition of nanoclay does not seem to change the particle size of the polymer.

Effect of cross-linking agents on the rheological properties of polymer-modified bitumen

2015 ◽  
Vol 16 (sup1) ◽  
pp. 349-361 ◽  
Author(s):  
Tirupan Mandal ◽  
Ryan Sylla ◽  
Hussain U. Bahia ◽  
Shayan Barmand
Keyword(s):  
Rheological Properties ◽  
Cross Linking ◽  
Modified Bitumen ◽  
Polymer Modified Bitumen

scholarly journals RHEOLOGICAL PROPERTIES OF BITUMEN MODIFIED WITH A COMBINATION OF FT PARAFFIN WAX (SASOBIT®) AND OTHER ADDITIVES

2016 ◽  
Vol 22 (2) ◽  
pp. 135-145 ◽  
Author(s):  
Hassan FAZAELI ◽  
Amir A. AMINI ◽  
Fereidoon MOGHADAS NEJAD ◽  
Hamid BEHBAHANI
Keyword(s):  
Rheological Properties ◽  
Polyphosphoric Acid ◽  
Crumb Rubber ◽  
Mechanical Analysis ◽  
Modified Bitumen ◽  
Modified Binders ◽  
Conventional Tests ◽  
Ft Ir ◽  
Styrene Butadiene ◽  
Butadiene Styrene

Fischer–Tropsch paraffin Sasobit® is a popular Warm Mix Asphalt (WMA) modifier applied to improve physi­cal and rheological properties of bitumen. Although there are a number of studies investigating the effects of sasobit on bitumen properties, little has been carried out on evaluation of bitumen modified by sasobit along with other additives. In this study, sasobit modified bitumen is used as the base condition and four common modifiers namely anti-stripping agent, Crumb Rubber (CR), Styrene–Butadiene–Styrene (SBS) and Polyphosphoric Acid (PPA) are added separately to the FT – Wax modified bitumen to evaluate the compatibility of these additives with sasobit. Morphological, rheological and physical properties of modified binders are studied using Fourier Transform Infrared Spectroscopy (FT-IR), Scan­ning Electron Microscopy (SEM), Dynamic Mechanical Analysis (DMA), Bending Beam Rheometer (BBR) alongside with conventional tests. Results show that although anti-stripping agent reduce bitumen viscosity and mixing/compac­tion temperatures of asphalt mixtures, it has significantly increased the stiffness of sasobit modified bitumen at low temperatures. Among all, sasobit and crumb rubber combination exhibited the best performance, especially at low and intermediate temperatures.

scholarly journals Evaluation of rheological performance of a local modified bitumen by Styrene Butadiene Styrene polymer used in wearing course

2021 ◽  
Vol 15 (58) ◽  
pp. 65-76
Author(s):  
Kebaili Kebaili ◽  
Mohammed Boucherba ◽  
Mohamed Djouhri ◽  
Mustapha Kebaili
Keyword(s):  
Mechanical Performance ◽  
Road Construction ◽  
Modified Bitumen ◽  
Modification System ◽  
Styrene Butadiene Styrene ◽  
Bituminous Pavements ◽  
Styrene Butadiene ◽  
Objective Being ◽  
Bitumen Modification ◽  
Butadiene Styrene

In road construction, bitumen is the binder that gathered the different aggregates of road pavements. Bitumen, as a viscoelastic material, influences considerably the rheological behavior of bitumen concrete. The bitumen used in Algeria, showed its limits face to the traffic, which is increasing continuously. This research aims to valorize SBS polymer in wearing course by modifying a pure 35/50 bitumen. The present paper aims to study the polymer derived from styrene and butadiene (SBS) from the company Kraton Polymers International Ltd in the modification of a bitumen to improve its mechanical characteristics.To this end, the incorporation of SBS polymer was carried out according to two contents: 5.0 and 7.5% (by weight of asphalt), the objective being to evaluate the influence of this type of polymer on the rheological properties of the bitumen ordinary road including viscosity and modulus.The results reveal that the bitumen modified with 7.5% of SBS has better mechanical performance on the rigidity and the elasticity compared to the conventional bitumen. Recommendations have been made to implement a bitumen modification system to improve its quality and therefore the durability of bituminous pavements in the south of Algeria.

Rheological properties of polymer modified bitumen from long-term field tests

Fuel ◽  
2007 ◽  
Vol 86 (7-8) ◽  
pp. 938-948 ◽  
Author(s):  
D. Valtorta ◽  
L.D. Poulikakos ◽  
M.N. Partl ◽  
E. Mazza
Keyword(s):  
Rheological Properties ◽  
Field Tests ◽  
Modified Bitumen ◽  
Polymer Modified Bitumen ◽  
Term Field
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