Article
Construction & Building Technology
Zhendong Qian, Haisheng Ren, Ya Wei
Summary: The research evaluated the effects of aggregate gradation and morphology on the mechanical properties and volumetric characteristics of porous asphalt mixtures. It was found that aggregate gradation significantly influenced the mixture performance, with the 2.36-4.75mm aggregate fraction being the most critical factor. Additionally, aggregate sphericity value was found to improve the mixture's resistance to permanent deformation and moisture.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Chemistry, Physical
Weihua Li, Weidong Cao, Xianfu Ren, Shurong Lou, Shutang Liu, Jizhe Zhang
Summary: The main objective of this study was to investigate the effect of aggregate gradation on the performance of asphalt concrete mixtures. The study found that aggregate gradation plays a crucial role in the volumetric parameters and rutting performance of asphalt concrete mixtures, with mixtures having a skeletal dense structure exhibiting the best rutting resistance performance.
Article
Construction & Building Technology
Jianying Hu, Tao Ma, Yuhao Zhu, Xiaoming Huang, Jian Xu, Libiao Chen
Summary: The study presents a methodology for designing high-viscosity modified porous asphalt mixtures, achieving desired air voids through the preparation of high-viscosity asphalt, formulation of aggregate gradations, and optimization of asphalt-aggregate ratio. The addition of high-viscosity modifier improved the performance of the asphalt.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Zhenjun Wang, Qingyun Liang, Fengfeng Yan, Guan Bian
Summary: In this study, a aggregate design method based on fractal theory was proposed, which showed better performance compared to trial calculation method. The simulation results confirmed that the mixture with optimal gradation had denser structure and better stability.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Ying Gao, Kun Hou, Yanshun Jia, Ziyao Wei, Shaoquan Wang, Zhuoran Li, Fan Ding, Xiwei Gong
Summary: The study focused on the variability of gradation for asphalt mixtures, experimenting with different aggregate sizes and establishing correlations between gradation and performance through various methods. The feasibility of digital image processing technology in detecting gradation was verified through the experiments.
AUTOMATION IN CONSTRUCTION
(2021)
Article
Construction & Building Technology
Kwadwo Appiah Boateng, Yaw Adubofour Tuffour, Daniel Obeng-Atuah, Stephen Agyeman
Summary: The prevalence of premature patch failures in bituminous pavement maintenance in Ghana, involving pothole and partial-depth repairs using cold-mix asphalt (CMA), has raised major concerns due to limited budgets and repeated disruption to traffic. The most common failures associated with CMA patches in the country are disintegration, shoving, and dishing, which suggest deficiencies in binder and aggregate functionality. Analysis of samples indicated poor CMA aggregate structure and lower binder content may be key factors contributing to patch failures.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Construction & Building Technology
Yanlong Li, Jihan Liu, Yunhe Liu, Heng Zhou, Lifeng Wen, Junhao Chen
Summary: The aim of this study was to enhance the performance of hydraulic asphalt concrete by reducing the amount of required asphalt. Aggregate gradation design was investigated for this purpose. The optimal skeleton gradation for coarse aggregates was determined by step-by-step filling vibration compaction, while a mathematical model based on gradation fractal theory and the Dinger-Funk equation was obtained for fine aggregates. The new gradation design showed improved characteristics compared to the control group, providing a new approach for designing hydraulic asphalt concrete with enhanced performance.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Bernardita Lira, Jonas Ekblad, Robert Lundstrom
Summary: Aggregate gradation plays a key role in the response of asphalt mixtures to loading, particularly in resistance to permanent deformation. This study evaluated the capability of a gradation-based framework to assess permanent deformation susceptibility, finding that there is a non-significant relationship between framework parameters and resistance to permanent deformation. Additionally, the study revealed that testing methods and the total amount of coarse material also have an impact on mixture resistance to permanent deformation.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Jiaolong Ren, Yinshan Xu, Jiandong Huang, Yi Wang, Zhirong Jia
Summary: This study investigates the effects of different sizes of aggregates on air void ratio and macroscopic aggregate bearing capacity, proposing a gradation with a strong aggregate structure that provides improved pavement performance for porous asphalt mixture. Strength mechanisms of aggregate structure are revealed using DEM simulations, and the mechanical role of each size aggregate on the aggregate structure is analyzed through mesoscopic aggregate contact force distribution.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Keke Lou, Xing Wu, Peng Xiao, Aihong Kang, Zhengguang Wu, Yan Xia
Summary: This study identified several key factors affecting the crack resistance of asphalt mixtures, such as fiber additives, gradation types, nominal maximum aggregate size, and types of asphalt. Basalt fiber, stone matrix asphalt, and SBS modified asphalt were found to have positive effects on enhancing crack resistance, while an increase in nominal maximum aggregate size may decrease crack resistance. The study also highlighted the correlation between IDEAL-CT test results and SCB test results, providing guidance for designing asphalt mixtures with good crack resistance.
APPLIED SCIENCES-BASEL
(2021)
Article
Construction & Building Technology
Sheng Liang, Rong Luo
Summary: This study introduces a two-dimensional virtual specimen fabricating method to accurately simulate the microstructure of asphalt mixtures, which effectively predicts the complex modulus of asphalt mixtures.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Mohammad Ali Khasawneh, Ansam Adnan Sawalha, Mohannad Theeb Aljarrah, Mohammad Ahmad Alsheyab
Summary: The study investigates the impact of aggregate gradation and Superpave volumetrics on the thermal properties of asphalt mixtures. Specimens with different Nominal Maximum Aggregate Sizes (NMAS) and gradation coarseness were prepared, and the Transient Plane Source (TPS) method was used to determine thermal properties. The results showed that heat transfer is highly dependent on contact area and air void volume. Gradation coarseness has a significant effect on thermal conductivity, while NMAS has a significant effect on thermal diffusivity. The study also developed regression equations for predictive modeling.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Xu Zhao, Dongyu Niu, Peng Zhang, Yanhui Niu, Huiyun Xia, Pengfei Liu
Summary: The difference between laboratory compaction and field compaction significantly affects the characteristics of asphalt concrete (AC). This research compared the effects of laboratory and field compaction on AC using various characteristic indexes. The results showed that SGC and SBC compaction methods produced AC specimens with better mechanical properties similar to field compaction. The study highlighted the importance of compaction methods and equipment selection in accurately evaluating the performance of AC.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Hasanain Radhi Radeef, Norhidayah Abdul Hassan, Ahmad Razin Zainal Abidin, Mohd Zul Hanif Mahmud, Nur Izzi Md. Yusoffa, Mohd Khairul Idham Mohd Satar, Muhammad Naqiuddin Mohd Warid
Summary: The study aimed to improve the dry process of incorporating plastic waste into asphalt mixtures by comparing control asphalt mixture with two plastic waste-modified asphalt mixtures. An enhanced mixing procedure was proposed and evaluated, showing substantial enhancement in asphalt performance, particularly with 20% plastic content added.
FRONTIERS IN MATERIALS
(2021)
Article
Construction & Building Technology
Jun Cai, Chen Song, Xiangbing Gong, Jiupeng Zhang, Jianzhong Pei, Zongwu Chen
Summary: This paper analyzed the composition, fragmentation and stability of porous asphalt concrete (PAC) gradation based on limestone aggregate. The study found that the formed structural systems have relative stability and better performance. The research provides insights into the potential alternative of limestone aggregate in areas where high-quality basalt is insufficient.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
E. Kassem, M. S. Khan, S. Katukuri, O. Sirin, A. Muftah, F. Bayomy
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2019)
Article
Construction & Building Technology
Okan Sirin, Md Ohiduzzaman, Emad Kassem, Dalim K. Paul
ROAD MATERIALS AND PAVEMENT DESIGN
(2020)
Article
Materials Science, Characterization & Testing
Wahid Hassan, Emad Kassem, Mohammad Al-Assi, Okan Sirin, Md Ohiduzzaman
JOURNAL OF TESTING AND EVALUATION
(2019)
Article
Engineering, Civil
Okan Sirin, Dalim K. Paul, Mohammad S. Khan, Emad Kassem, Masoud K. Darabi
JOURNAL OF TRANSPORTATION ENGINEERING PART B-PAVEMENTS
(2019)
Article
Construction & Building Technology
Mohammed Sadeq, Chien-Wei Huang, Eyad Masad, Hussain Al-Khalid, Okan Sirin
Summary: Two approaches were presented for evaluating damage and recovery characteristics of asphalt mixtures, showing variations in different mixtures. Ageing reduced the differences in resistance to damage among mixtures, but had less effect on differences in healing potential.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Engineering, Industrial
Okan Sirin, Murat Gunduz, Mohammed E. Shamiyeh
Summary: The study aims to identify the factors affecting pavement performance and rank them according to importance using the Analytic Hierarchy Process (AHP). The findings show that unconsidered heavy vehicles volume is the most critical factor affecting pavement performance, followed by low asphalt content leading to binder aging and reduced fatigue life of the pavement.
ENGINEERING CONSTRUCTION AND ARCHITECTURAL MANAGEMENT
(2021)
Article
Construction & Building Technology
Okan Sirin, Md Ohiduzzaman, Emad Kassem, Wahid Hassan
Summary: The study demonstrates that road noise levels in Qatar are higher and the acoustic performance deteriorates faster compared to the US and Europe, suggesting the need for alternative asphalt mixture designs. There is a good correlation between mean texture depth of pavement sections and noise levels.
ADVANCES IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Okan Sirin, Md Ohiduzzaman, Emad Kassem
Summary: The ambient temperature affects tire-pavement noise measurements, necessitating a temperature correction factor. In hot climatic conditions of Gulf regions, there is a strong relationship between noise intensity and temperature, especially at frequencies above 1250 Hz. Different pavements exhibit varying temperature coefficients.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Construction & Building Technology
K. Lakshmi Roja, Mohammad Fuad Aljarrah, Okan Sirin, Nasser Al-Nuaimi, Eyad Masad
Summary: This study evaluates the potential of producing warm-mix asphalt (WMA) using a wax-based additive (Sasobit) in a binder modified using crumb rubber (CR). It was found that adding 2% and 3% Sasobit could reduce the viscosity of the binder and improve the dynamic modulus and rutting resistance. However, the fatigue life was noticeably reduced when adding 3% Sasobit.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2022)
Article
Engineering, Civil
Mohammad S. Khan, Emad Kassem, Armando McDonald, Okan Sirin, D. Eric Aston
Summary: This study investigates the behavior of antioxidant additives and copolymers in asphalt binders. The results show that Redicote and Solprene can retard the aging process of asphalt binders and inhibit the growth of large molecular size particles.
JOURNAL OF TRANSPORTATION ENGINEERING PART B-PAVEMENTS
(2022)
Article
Business
Okan Sirin, Murat Gunduz, Mohammed E. Shamiyeh
Summary: This article identifies and ranks the factors that affect pavement performance through a questionnaire survey and data analysis. The results show that surface conditions, including high percentage of cracks, extremely rough road surface, and high rut depth, are the most significant factors. These findings will help professionals in the pavement industry improve pavement performance, extend the expected pavement life cycle, and reduce maintenance requirements.
IEEE TRANSACTIONS ON ENGINEERING MANAGEMENT
(2022)
Article
Construction & Building Technology
Ahmad Al-Tawalbeh, Okan Sirin, Mohammed Sadeq, Haissam Sebaaly, Eyad Masad
Summary: The study aimed to calibrate and validate two commonly used models for predicting the dynamic modulus of asphalt mixtures in Qatar. The Hirsch model showed high prediction performance, which improved slightly after calibration. The Alkhateeb model also showed improvement after calibration. The calibrated Hirsch model achieved a significant improvement in predicting the performance of typical pavement sections in Qatar.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Construction & Building Technology
Mohammad Solaiman Khan, Emad Kassem, D. Eric Aston, Okan Sirin, Armando McDonald
Summary: The effect of long-term aging on asphalt binders mixed with antioxidant additives and copolymers was investigated using atomic force microscopy (AFM). The study found that both antioxidants and copolymers were effective in retarding the aging of asphalt binders. Microstructural analysis showed that aging caused significant quantitative changes in various surface phases of the binders, leading to crack initiation and fatigue cracking. However, the antioxidants and copolymers helped to retard the increase in stiffness compared to field-aged binders.
INTERNATIONAL JOURNAL OF PAVEMENT RESEARCH AND TECHNOLOGY
(2023)
Article
Computer Science, Information Systems
Okan Sirin, Murat Gunduz, Abdullah Moussa
Proceedings Paper
Engineering, Multidisciplinary
Okan Sirin, Md Ohiduzzaman, Emad Kassem
2ND INTERNATIONAL CONFERENCE ON ROBOTICS AND MECHANTRONICS
(2019)
