Laboratory Study of Polymer-Modified Bitumen in Road Construction: A Review on Crumb Rubber Application

• Author(s): Samson Olukayode Olopade ; Bolorunduro Kehinde ; Olayinka Olawale Olarewaju ; Afolayan Abayomi
• Paper ID: 1704412
• Page: 326-329
• Published Date: 13-05-2023
• Published In: Iconic Research And Engineering Journals
• Publisher: IRE Journals
• e-ISSN: 2456-8880
• Volume/Issue: Volume 6 Issue 11 May-2023

Abstract

This study assesses the laboratory study of polymer-modified bitumen in road construction by investigating the effect of crumb rubber (usually in the range of 18 to 25% of rubber) was carefully observed at a room temperature of ?166?^0C using wet process. For years, asphalt binder has been used as the elemental material for flexible pavement. The increase in axle loads, heavy traffic, severe climate conditions, and construction failures led many researchers to seek some methods to enhance the bitumen modifications. Several laboratory tests conducted include; Penetration, Ductility, Saybolt viscosity, Ring and ball softening point, and Loss on the heating. Three (3) kilograms of natural bitumen and one (1) kilogram of granulated crumb rubber were sourced for the purpose of this study where it was varied at 0%, 2.5%, 5.0%, and 7.5% by weight. At 7.5%, the results showed improvement in the physical properties of the modified asphalt binders in terms of an increase in softening point and viscosity values. Crumb rubber has further enhanced the loss and storage modulus of the asphalt binder. All of the test results fell within the permissible range. Hence, it was decided that crumb rubber is a recommended component for asphalt mixtures.

Keywords

Crumb rubber, Bitumen, Wet process, Polymer modified bitumen, Saybolt viscosity test, Ring and ball softening test.

Citations

IRE Journals:
Samson Olukayode Olopade , Bolorunduro Kehinde , Olayinka Olawale Olarewaju , Afolayan Abayomi "Laboratory Study of Polymer-Modified Bitumen in Road Construction: A Review on Crumb Rubber Application" Iconic Research And Engineering Journals Volume 6 Issue 11 2023 Page 326-329

IEEE:
Samson Olukayode Olopade , Bolorunduro Kehinde , Olayinka Olawale Olarewaju , Afolayan Abayomi "Laboratory Study of Polymer-Modified Bitumen in Road Construction: A Review on Crumb Rubber Application" Iconic Research And Engineering Journals, 6(11)