***Data analysis programs on chemical and rheological properties of bitumen***
Authors: Shisong Ren, Xueyan Liu, Sandra Erkens
Engineering Structure Department, Faculty of Civil Engineering and Geosciences, Delft University of Technology

Corresponding author: Shisong Ren

Contact Information:

Shisong.Ren@tudelft.nl

Delft University of Technology - Faculty of Civil Engineering and Geosciences

Stevinweg 1, 2628 CN Delft
The Netherlands

***General Introduction***
This dataset contains data analysis programs on chemical and rheological properties of bitumen for determining 
the aging and rejuvenation effect on bitume performance. This program and experimental data are built and obtained 
from Shisong Ren's PhD thesis project:
doi: 10.4121/4ad76f10-98b5-45f1-ae2a-6282aca69e00
It is being made public to act as supplementary data for publications and the PhD thesis of Shisong Ren, and in order for 
other researchers to use these data analysis programs in their own similar work.

The program and data were built and collected in the Pavement Engineering Laboratory of the Delft University of Technology
- Faculty of Civil Engineering and Geosciences, between September 2019 and September 2022.
This research project was made possible by a grant from the China Scholarship Counil (CSC) and assistance from Dr. Ruxin Jing.

***Purpose of the test campaign***
The purpose of thses experiments and data analysis programs was to detect the chemical and rheological variations of bitumen 
during aging and rejuvenation conditions. Chemical properties contains the functional group distrubution (see FTIR analysis. xlsx) 
and molecular weight distribution (see GPC analysis. xlsx). Meanwhile, the bitumen samples were subjected by rheological tests. Their
complex modulus and phase angle Mater curves could be plotted (see master curve-sigmoidal. xlsx). The complex modulus master curve
area at variable frequency regions could be determined by using the files (Complex modulus G master curve area.xlsx. and Shear strain
and stress area. xlsx.). In addition, the G-R parameter and cracking width of bitumen could be analyzed using G-R Glover-Rowe Damage 
Parameter. xlsx. and DSR-C analysis template. xlsx. documents. Different micromechanic models were employed to describe the viscoelastic
behaviors of bitumen during aging and rejuvenation, including the Burgers model, Generalized Maxwell model, Huet model, Kelvin model, and
Maxwell model.

***Test equipment***
The chemical properties were obtained by Fourier-transform infrared spectroscopy (FTIR) and Gel Permeation Chromatography (GPC). 
Meanwhile, the rheological parameters were measured by Dynamic Shear Rheometer (DSR). The equipment setup can be found in our
published papers as references in this dataset.

***Description of the data in this data set***
The data included in this dataset has been organized per specimen. The specimen name of rejuvenated bitumen follow the nomenclature
system: XPYR with
X= the aging level of bitumen from PAV aging 20 (1P), 40 (2P) and 80 hours (4P).
Y= the rejuvenator dosage from 0% to 15%
R= the rejuvenator type: B-bio-oil, E-engine-oil, N-naphthenic-oil, A-aromatic-oil.
