Dowel bars are generally provided across longitudinal joints of rigid pavement. The migration of asphalt cement to the surface of the pavement under wheel loads especially at high temperatures is called stripping. The lower the penetration of asphalt binder, the softer the asphalt binder.

Dowel bars are generally provided across longitudinal joints of rigid pavement. The migration of asphalt cement to the surface of the pavement under wheel loads especially at high temperatures is called stripping. The lower the penetration of asphalt binder, the softer the asphalt binder.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Asphalt Binders and Mixtures

Asphalt binders are subsidiary products procured during the refining process of petroleum while manufacturing gasoline, diesel, and similar petroleum products. Asphalt binders are obtained from the residue that remains after the distillation of petroleum, this residue is further subjected to steam distillation and oxidation to remove the traces of gas oil present in the residue. Certain additives or modifiers are also added to asphalt binders to alter them to suit different applications.

Question

Identify the following statement whether it is (True) or (False). If your
answer is false, give the correct answer?
1- Dowel bars are generally provided across longitudinal joints of rigid
pavement.
2- The migration of asphalt cement to the surface of the pavement under
wheel loads especially at high temperatures is called stripping.
3- The lower the penetration of asphalt binder, the softer the asphalt binder.
4- We need to keep the aggregate for 24 hours in an oven at 105°C to obtain
the aggregate dry weight.
5- It is important to design thicker layers of asphalt if the subgrade materials
are not strong enough to withstand expected loads during their life cycle.
6- The medium curing asphalt is produced by blending asphalt with diesel
oil.

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