Use of local crumb rubber as modifier, to improve the rutting resistance of bitumen

2021 ◽  
Author(s):  
Muhammad Saad Waheed ◽  
Muhammad Jamal ◽  
Manzoor Elahi
Keyword(s):  
Rheological Properties ◽  
Crumb Rubber ◽  
Critical Component ◽  
Dynamic Shear ◽  
Dynamic Shear Rheometer ◽  
Rutting Resistance

Abstract Bitumen is a critical component in asphaltic pavements and is often the cause of many road failures. The commercial modifiers that are being used to enhance the properties of bitumen are quite expensive; therefore, this article is dedicated to explore the potential of local crumb rubber as bitumen modifier. Two grades of bitumen pen grade (60/70 and 80/100) were modified with local crumb rubber. Rheological properties of modified and unmodified bitumen were evaluated using Dynamic Shear Rheometer. The results indicated an increase in the rutting resistance of bitumen. This indicates that Local crumb rubber can be used to enhance the properties of bitumen.

scholarly journals Aging and Rheological Properties of Latex and Crumb Rubber Modified Bitumen Using Dynamic Shear Rheometer

2020 ◽  
Vol 52 (3) ◽  
pp. 385 ◽  
Author(s):  
Abdulnaser M Al-Sabaeei ◽  
Bayu Agus Mustofa ◽  
Muslich Hartadi Sutanto ◽  
Sri Sunarjono ◽  
Nura Bala
Keyword(s):  
Rheological Properties ◽  
Crumb Rubber ◽  
Dynamic Shear ◽  
Modified Bitumen ◽  
Dynamic Shear Rheometer

Effects of Sasobit on Rheological Properties of Asphalt Binders

2012 ◽  
Vol 509 ◽  
pp. 136-141
Author(s):  
Zhi Fei Liu ◽  
Jia Ping Liu ◽  
Jin Xiang Hong ◽  
Chong Huang
Keyword(s):  
Melting Point ◽  
Rheological Properties ◽  
Warm Mix Asphalt ◽  
Asphalt Binders ◽  
Test Results ◽  
Dynamic Shear ◽  
Dynamic Shear Rheometer ◽  
Rutting Resistance ◽  
Modified Binders ◽  
Rheometer Test

Research in the laboratory was carried out to determine if addition of warm mix asphalt additive (Sasobit) has potential to reduce the temperature comparison with control mix. To fulfill this purpose five types of asphalt binders have been produced with a Sasobit additive in concentration range from 0 to 10% by weight of the asphalt. Viscosity test and dynamic shear rheometer test are conducted for the investigation of effects of Sasobit on rheological properties characteristics of binders. Viscosity tests on binders indicated that the Sasobit binders had significantly lower viscosities compared to control binders at the temperature above 100°C, indicating that Sasobit can reduce the mixing and compaction temperatures above the melting point of Sasobit. Sasobit modified binders are more sensitive cracking and had more excellent rutting resistance properties at service temperatures compared with original bitumen. Based on the test results, the suggest content of Sasobit addition is 3% by weight.

scholarly journals WORKABILITY AND RHEOLOGICAL PROPERTIES OF EVA-MODIFIED BITUMEN COMPARED WITH PG 76 BINDER

2018 ◽  
Vol 80 (4) ◽  
Author(s):  
Ebenezer Akin Oluwasola ◽  
Mohd Rosli Hainin ◽  
Mohd Khairul Idham ◽  
Modupe Abayomi
Keyword(s):  
Rheological Properties ◽  
Vinyl Acetate ◽  
Softening Point ◽  
Ethylene Vinyl Acetate ◽  
Climatic Conditions ◽  
Dynamic Shear ◽  
Modified Bitumen ◽  
Dynamic Shear Rheometer ◽  
Modified Binder

The failures of the flexible pavements are not only caused by harsh climatic conditions prevailing in most of the tropical countries but also due to increase in traffic. The ethylene vinyl acetate (EVA) modification of the bitumen can strengthen the properties of binders and also improve the quality of bitumen used for pavements construction. This paper reports the changes in physical and rheological properties of unaged 80-100 grade bitumen modified with different percentages of EVA and compared with the properties of PG 76 binder. The penetration, softening point and viscosity properties were studied. The rheological properties were measured using dynamic shear rheometer and the test was performed at temperatures ranging from 46 to 76 ⁰C at intervals of 6 ⁰C. It was noted that, after modification, the properties of binders had improved. The results show that 5% EVA content by weight in modified binder is adequate in terms of physical and rheological properties studied. In addition, the properties of 5% EVA modified 80-100 grade bitumen are similar to PG 76 binder.

Effect of Ageing on Rheological Properties of Asphalt

2021 ◽  
Vol 891 ◽  
pp. 185-189
Author(s):  
Li Xing Ma
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Rheological Properties ◽  
Complex Modulus ◽  
Dynamic Shear ◽  
Dynamic Shear Rheometer ◽  
Field Behavior ◽  
Aged Asphalt ◽  
Actual Field

This paper is to study the mechanism of aging on the rheological properties of the asphalt and make correlations with the actual field behavior of the binder. The effects of ageing on rheological properties of asphalt has been studied by Dynamic Shear Rheometer(DSR). Significant differences of rheological properties and composition were observed between fresh and aged asphalt. The results show that aging at low temperature increases the complex modulus of asphalt, but has little effect at high temperature.

An Alternative Experimental Method for Measuring the Low Temperature Rheological Properties of Asphalt Binder by Using 4mm Parallel Plates on Dynamic Shear Rheometer

2019 ◽  
Vol 2673 (3) ◽  
pp. 427-438 ◽  
Author(s):  
Di Wang ◽  
Augusto Cannone Falchetto ◽  
Alexander Alisov ◽  
Johannes Schrader ◽  
Chiara Riccardi ◽  
...  
Keyword(s):  
Low Temperature ◽  
Rheological Properties ◽  
Experimental Method ◽  
Complex Modulus ◽  
Testing Procedure ◽  
Asphalt Binders ◽  
Rheological Parameters ◽  
Parallel Plates ◽  
Dynamic Shear ◽  
Dynamic Shear Rheometer

The possibility of using the dynamic shear rheometer (DSR) with 4 mm parallel plates and 3 mm gap is investigated as an alternative experimental method to measure the rheological properties of asphalt binders at low temperature. A special butterfly silicone mold was prepared for this purpose and the corresponding testing procedure was also developed. Five different asphalt binders, which are part of two active research projects, were selected. Frequency and temperature sweep tests were conducted using the DSR with three plate–plate geometries: 4 mm, 8 mm, and 25 mm. The new testing procedure was used to measure at low temperatures. The method recently proposed by the Western Research Institute and based on DSR tests with 4 mm parallel plates and 1.75 mm gap was also used for comparison purposes. Black diagrams and Cole-Cole plots were then used to evaluate the experimental data. Complex modulus and phase angle master curves were generated, and the rheological parameters compared. Finally, the two spring, two parabolic elements, one dashpot (2S2P1D) model was selected to investigate the rheological properties of the binders. Results indicate that the proposed procedure is a simple and reliable experimental method and represents an alternative experimental option to measure and analyze the rheological properties of asphalt binders at low temperature.

Effects of Various Rejuvenator Sealer Materials on Rheological Properties of Aged SBS Modified Asphalt

2014 ◽  
Vol 599 ◽  
pp. 155-158 ◽  
Author(s):  
Wen Bo Zeng ◽  
Li Wan ◽  
Zi Qiang Peng ◽  
Pei Qiang Cui ◽  
Shao Peng Wu
Keyword(s):  
Stress Relaxation ◽  
Rheological Properties ◽  
Rheological Characteristics ◽  
Dynamic Shear ◽  
Dynamic Shear Rheometer ◽  
Modified Asphalt ◽  
Aged Asphalt ◽  
Sbs Modified Asphalt

In recent years, using rejuvenator sealer materials (RSMs) to recover the performance of aged asphalt on the pavement is becoming more and more popular. In this paper, four different RSMs were made and applied to rejuvenate the aged asphalt which experienced a PAV 20H process. Then the dynamic rheological characteristics of different binders were tested by the dynamic shear rheometer (DSR).The results indicated that the four RSM can recover the stress relaxation and fatigue factor of aged asphalt. But the rutting parameter decreased with the introduction of four RSMs.

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