Manufacturer of the modifier recommends a blending method which takes 18 hours curing time, at 180-190 °C range, using a colloid mill (one pass). 2.2.1 Ethylene – vinyl acetate (E VA) modified bitumen The EVA modified bitumen was produced by adding 6wt% ethylene – vinyl
A laboratory evaluation of the modified bitumens containing styrene-ethylene-butylene- styrene (SEBS), ethylene vinyl acetate (EV A) and ethylene butyl acrylate (EBA) copolymers is presented. The...
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Samy Dekhli, Khedidja Ait Mokhtar, Ferhat Hammoum and Djaffar Si Bachir, 2015. Rheological Behaviour of Ethylene-Vinyl-Acetate (EVA) Modified Road Bitumen. Journal of Applied Sciences, 15: 444-455. Received: September 22, 2014; Accepted: December 04, 2014; Published: January 20, 2015.
The thermogravimetric/differential thermogravimetric (TG/DTG) analysis of base bitumen and EVA-modified bitumen suggests that the TG decomposition stage for bitumen happens at 290-490 °C with 75%...
Other studies have focused on the use of EVA as bitumen modifier (Dekhli et al. 2015). However, little attention has been paid to the importance of EVA selection based on its vinyl acetate (VA ...
Fig. 3 exhibits thermogravimetric curve for 5% EVA-g-MAH modified bitumen sample, presenting one decomposition stage (315–490 °C).DTG analysis had a mass loss rate at 461 °C representing the decomposition of asphaltenes.Fig. 4 shows TG and DTG curves for 6% EVA-g-MAH modified bitumen sample, which shows one decomposition stag on the TG, from …
Bitumen modified with EVA or EVA-grafted maleic anhydride copolymer showed less temperature susceptibility and reduced deformation in pavements (Luo and Chen, 2011). Bitumen (60/70 and 150/200 ...
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The properties of bitumen mainly depend on the age of bitumen. Therefore there is a need to study the properties of modified bitumen before and after ageing. In this paper the the physical properties of EVA (Ethyl Vinyl Acetate) modified bitumen is discussed, optimum dose is determined and the effect of ageing on the binder prepared using the ...
this paper presents a laboratory study of modified bitumen containing ethylene vinyl acetate (eva) and ethylene vinyl acetate grafted maleic anhydride (eva-g-mah) copolymers. when the different polymers were added, the physical properties of modified bitumens, such as softening point, ductility at low temperature and storage stability at high …
In this study, composite EVA modifiers were blended with VG-40 bitumen to produce binders having similar rutting resistance as that of the hard bitumen produced by the propane-deasphalting method. The optimum combination of the composite EVA modifiers was determined by considering the superpave rutting parameter ( G */sin δ ), non-recoverable ...
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10%A laboratory evaluation of the modified bitumens containing styrene-ethylene-butylene-styrene (SEBS), ethylene vinyl acetate (EVA) and ethylene butyl acrylate (EBA) copolymers is presented. The morphology, storage stability and rheological and ageing properties of the modified binders were studied using fluorescence microscopy, dynamic mechanical …
High Density Polyethylene as Bitumen Modifier in Asphalt Concrete Mix" Materials Letters 58, pp 267– 271. 2004. Esmaeil Ahmadinia, Majid Zargar, Mohamed ... "Rheology and Stability of Bitumen-EVA Blends", European Polymer Journal, Elsevier Science Ltd, 40, 2365-2372.
The aim of the present work is to study the rheology in the linear viscoelasticity range of polymer-modified bitumens with recycled EVA. In …
In the present study, ethylene-vinyl acetate (EVA) and crumb rubber (CR) were used as bitumen modifiers. The experiment was designed by response surface methodology (RSM) at different levels of modifier additives based on the central composite design (CCD). Next, the Superpave protocol was followed to evaluate the modified bitumen performance at …
Unlike SBS and other asphalt modifiers, Epolene® EE-2 does not require high shear blending or milling processes to be added to asphalt. Epolene® easily melts into molten asphalt and blending is typically complete in the time it takes to homogenize the mixture (normally 2-3 hours). To demonstrate this the solution rates of SBS and Epolene® EE ...
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