Effect of Polymer Modification on Asphalt Cement Properties

Kareem, Yassir Nashaat A.

doi:10.24237/djes.2016.09301

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…Pavements constructed with modified binders have some merits,such as resistance rutting and thermal cracking, as well as decreasing fatigue damage, stripping and temperature susceptibility. Modified binders have been used with success at locations of high stress, such as at intersections of busy streets, airports and vehicle weigh stations (Kareem, 2016). Styrene-Butadiene-Styrene (SBS) is one of the elastomeric polymer that was widely used to improve properties of asphalt binder.SBS polymer exhibits a two-phase morphology consisting of glassy polystyrene (PS) end blocks connected together by the rubber polybutadiene (PB) segments.…”

Section: ‫ـــــــــــــــــــــــــــــــــــــــــــــــــــــــــــmentioning

confidence: 99%

Storage Stabilityand Compatibility of Dura Asphalt Modified by SBS

Saad¹,

Abdelzaher²

2019

RJS

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The purpose of this study was to characterize the physical behaviour of Dura asphalt modified by styrene-butadiene-styrene (SBS)co-polymer. The polymer modified asphalt (PMA) was produced by mixing a 40/60 penetration grade Dura (base) asphalt withdifferent ratios of the copolymers. The resultsthus exhibited that the modification of the authentic asphalt by SBS had great impact on the physical properties of the asphalt. Furthermore, the high temperature performance of the original asphalt was enhancedsuch that the morphology observed by microscope examinationrevealed the compatibility between SBS and asphalt. Additionally,the storage stability of the binder was significantly improved in comparison with Dura asphalt.

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Section: ‫ـــــــــــــــــــــــــــــــــــــــــــــــــــــــــــmentioning

confidence: 99%

Storage Stabilityand Compatibility of Dura Asphalt Modified by SBS

Saad¹,

Abdelzaher²

2019

RJS

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Evaluating and Modeling of Modified Asphalt Binder at Elevated Temperatures

Abed

Al-Haddad

2020

IOP Conf. Ser.: Mater. Sci. Eng.

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Many regions in Iraq with high weathering temperature suffer from very hot climate during a long summer season continue to more than 5 months with temperature rise to more than 50C°. Also, increasing road traffic and axial loads causing a permanent deformation that leads to decrease pavement performance and reducing its life. Asphalt binder is considered one of the most significant keys in flexible pavement and its characteristics have a great impact on asphalt mixtures so choosing the suitable type of asphalt binder may improve its performance and control on permanent deformation failures. In this research, Daurh and Basrah asphalt binders were chosen to be characterized and enhanced their properties by using some modifiers. Three types of modifiers were selected with different percentages, styrene-butadiene-styrene (SBS), butyl rubber (BR) and BG plus anti-stripping agent. The results showed Multi Stress Creep and Recovery (MSCR) test is a suitable technique to evaluate the improvement of asphalt cement. The degrees of improvement in the percent of recovery %R and the non-recoverable compliance Jnr values and percent of reduction accumulated strain at 0.1 and 3.2 kPa after asphalt modification is higher for the SBS followed by BR then BG plus and Durah asphalt binder has better rutting resistance than Basrah asphalt cement. The behavior of modified asphalt cement modeled as viscoelastic materials and predicted the sigmoidal model as a suitable mechanical model to represent this behavior.

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Effect of Polymer Modification on Asphalt Cement Properties

Cited by 2 publications

References 3 publications

Storage Stabilityand Compatibility of Dura Asphalt Modified by SBS

Storage Stabilityand Compatibility of Dura Asphalt Modified by SBS

Evaluating and Modeling of Modified Asphalt Binder at Elevated Temperatures

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