Very often we need to improve binding properties, elasticity, elastic recovery for the binder, prolong life time for the asphalt pavements, increase their bearing capacity for the heavy transport at different climate - these are the reasons for Bitumen modification. For these reasons there are plenty of different products to use. These products have to be selected depending on basic bitumen we use, specifications we need to achieve, technological aspects, dosing equipment available and etc.

http://www.bincis.lt/en/products/technologies-for-roads/bitumen-modifiers.html

Hello

Dear Gohar

the most commonly used polymers for modification of asphalt binder are styrene butadiene styrene (SBS) and styrene butadiene Rubber (SBR). One of the most difficult about polymer modification of asphalt binder is the storage stability of prepared modified bitumen. to this end nano-material such as nano-clay is added to polymer modified bitumen to overcome this problem.

you can also take advantages of the following articles:

Article Experimental analysis of the influence of SBS/nanoclay addit...

http://www.tandfonline.com/doi/abs/10.1080/14680629.2016.1211961

http://www.nrcresearchpress.com/doi/abs/10.1139/cjce-2017-0041

Article Aging rheological characteristics of SBR modified asphalt wi...

http://www.tandfonline.com/doi/abs/10.1080/10916466.2017.1292292

http://www.sciencedirect.com/science/article/pii/S0950061816319924

Dear all,

maleic anhydride (monomer) is used to modify bitumen. Regards