Which of the following modified bitumen membranes is more elastomeric?

Question

Quizplus · Accepted Answer

SBS-modified bitumen has a higher elasticity due to the presence of styrene-butadiene-styrene rubber in its composition, whereas APP-modified bitumen has a higher plasticity due to its atactic polypropylene content. Therefore, SBS-modified bitumen is more elastomeric and flexible, making it a better choice for areas where movements or vibrations are expected, such as high traffic areas or regions with seismic activity.

Which of the Following Modified Bitumen Membranes Is More Elastomeric