scholarly journals Dataset of mechanical, marshall and rheological properties of crumb rubber – Bio-oil modified hot mix asphalt for sustainable pavement works

Data in Brief ◽  
2018 ◽  
Vol 21 ◽  
pp. 63-70 ◽  
Author(s):  
Abayomi Emmanuel Modupe ◽  
Olumoyewa Dotun Atoyebi ◽  
Opeyemi Emmanuel Oluwatuyi ◽  
Oluwasegun James Aladegboye ◽  
Ayobami Adebola Busari ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Hot Mix Asphalt ◽  
Crumb Rubber ◽  
Bio Oil

scholarly journals Evaluation of Micro-Mechanism and High- and Low-Temperature Rheological Properties of Disintegrated High Volume Crumb Rubber Asphalt (DHVRA)

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1145
Author(s):  
Wei Li ◽  
Sen Han ◽  
Xiaokang Fu ◽  
Ke Huang
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Rheological Properties ◽  
Particle Diameter ◽  
Gel Permeation Chromatography ◽  
High Volume ◽  
Crumb Rubber ◽  
Test Method ◽  
Polar Component ◽  
Temperature Performance

The aims of this paper are to prepare disintegrated high volume crumb rubber asphalt (DHVRA) with low viscosity, good workability and low-temperature performance by adding disintegrating agent (DA) in the preparation process, and to further analyze the disintegrating mechanism and evaluated high-temperature and low-temperature rheological properties. To obtain DHVRA with excellent comprehensive performance, the optimum DA dosage was determined. Based on long-term disintegrating tests and the Fluorescence Microscopy (FM) method, the correlations between key indexes and crumb rubber (CR) particle diameter was analyzed, and the evaluation indicator and disintegrating stage division standard were put forward. Furthermore, Fourier transform infrared spectroscopy (FT-IR) and Gel Permeation Chromatography (GPC) was used to reveal the reaction mechanism, and the contact angle test method was adopted to evaluate the surface free energy (SFE). In addition, the high-temperature and low-temperature rheological properties were measured, and the optimum CR content was proposed. Results indicated that the optimum DA dosage was 7.5‰, and the addition of DA promoted the melt decomposition of CR, reduced the viscosity and improved the storage stability. The 135 °C rotational viscosity (RV) of DHVRA from mixing for 3 h could be reduced to 1.475 Pa·s, and the softening point difference was even less than 2 °C. The linear correlation between 135 °C RV and the diameter of CR particle in rubber asphalt system was as high as 0.968, and the viscosity decay rate (VDR) was used as the standard to divide the disintegrating process into a fast disintegrating stage, stable disintegrating stage and slight disintegrating stage. Compared to common rubber asphalt (CRA), DHVRA has an absorption peak at 960 cm−1 caused by trans olefin = C-H, and higher molecular weight and polar component of surface energy. Compared with CRA, although the high-temperature performance of DHVRA decreases slightly, the low-temperature relaxation ability can be greatly improved.

Effect of crumb rubber size on the performance of rubberized asphalt with bio-oil pretreatment

2021 ◽  
Vol 285 ◽  
pp. 122864
Author(s):  
Yong Lei ◽  
Zonghaoxuan Wei ◽  
Hainian Wang ◽  
Zhanping You ◽  
Xu Yang ◽  
...  
Keyword(s):  
Crumb Rubber ◽  
Bio Oil

Influence of crumb rubber size particles on moisture damage and strength of the hot mix asphalt

2021 ◽  
Author(s):  
Munder Bilema ◽  
Mohamad Aman ◽  
Norhidayah Hassan ◽  
Mohamed Haloul ◽  
Saeed Modibbo
Keyword(s):  
Hot Mix Asphalt ◽  
Moisture Damage ◽  
Crumb Rubber

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.

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