Article
Chemistry, Physical
Anda Ligia Belc, Erdem Coleri, Florin Belc, Ciprian Costescu
Summary: The study shows that using warm mix additives can reduce the mixing and compaction temperatures of asphalt concrete by 40 degrees Celsius without compromising long-term performance, thus reducing fuel consumption and greenhouse gas emissions.
Article
Green & Sustainable Science & Technology
Tess Sigwarth, Johannes Buechner, Michael P. Wistuba
Summary: This study focuses on the capability of replacing synthetically refined wax with bio-degradable wax, and finds that it is technically feasible. The study also concludes that bitumen and wax do not contribute to microplastic pollution.
Article
Engineering, Chemical
Paolino Caputo, Iolinda Aiello, Rossella Caligiuri, Eugenia Giorno, Abraham A. Abe, Cesare Oliviero Rossi, Nicolas Godbert
Summary: The study focuses on modifying bitumen by adding chemical additives to improve its rheological properties and interaction forces with stone aggregates. Results show that alkylated gallic esters are excellent for Warm Mix Asphalt (WMA), with shorter chains performing better, while gallic ester and acid derivatives are excellent adhesion activators.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2022)
Article
Crystallography
Guoyang Lu, Shaowei Zhang, Shaofeng Xu, Niya Dong, Huayang Yu
Summary: By investigating the synergistic effect of surfactant and foaming process on foamed bitumen, optimal foaming conditions were identified that significantly improved the half-life of the foam, promoting the application of surfactant foam bitumen in engineering practice.
Article
Construction & Building Technology
Amir Kavussi, Seyed Mohsen Motevalizadeh
Summary: The study focused on the impact of RAP materials on fracture and mechanical properties of foam WMA mixes. Excessive RAP content decreased the flexibility of foam-WMA mixes, while moderate amounts increased the resistance to crack propagation. These findings were supported by both SCB and Pull-Off adhesion test results.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Vivek Pratap Wagh, Mayank Sukhija, Ankit Gupta
Summary: Warm mix asphalt (WMA) technology has emerged as a viable alternative to traditional asphalt pavement production. This study investigates the impact of reduced aging temperature on the performance of WMA additives blended with VG30 binder. The results showed that the WMA additives increased the aging resistance of asphalt binder and improved its fatigue performance.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2023)
Article
Green & Sustainable Science & Technology
Zihao Chen, Henglong Zhang, Haihui Duan, Caijun Shi
Summary: Thermochromic asphalt materials can reduce mixing and compaction temperatures, increase optical reflectance, lower pavement temperature, decrease heat release to urban atmosphere, improve urban microclimate, and contribute to sustainable development through warm-mix asphalt technology.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Construction & Building Technology
Hong -Hu Chu, Abdulaziz Ibrahim Almohana, Ghassan A. QasMarrogy, Sattam Fahad Almojil, Abdulrhman Fahmi Alali, Khaled Twfiq Almoalimi, Amir Raise
Summary: The increase in traffic and changes in weather conditions have led to many distresses in the pavement. Asphalt binder modification is the best way to control these stresses. Meanwhile, utilizing warm mix asphalt additives has significant environmental benefits. This research investigates the influence of using waste materials (ground tire rubber and natural bitumen) on the performance behavior of asphalt binders and mixtures containing warm mix asphalt additive. The results show that the combination of waste materials improves the fatigue and rutting performance, and adding waste natural bitumen decreases the low-temperature behavior of the asphalt binder while adding waste ground tire rubber improves the resistance against low-temperature cracking.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Qiang Li, Guangxu Sun, Yang Lu, Yuanpeng Meng, Sang Luo, Lei Gao
Summary: The study evaluates the performance of recycled asphalt binders prepared using warm-mix recycling technology in terms of linear viscoelasticity, rutting resistance, fatigue resistance, and low-temperature crack resistance. Different warm mix asphalt (WMA) technologies and modifiers have significant effects on the performance of recycled binders. The addition of crumb rubber powder (CRP) in warm-mix recycled binders shows the best comprehensive performance, and suitable modifiers are recommended to compensate for the loss of pavement performance caused by the use of WMA technologies and RAP.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Multidisciplinary
Adham Mohammed Alnadish, Mohamad Yusri Aman, Herda Yati Binti Katman, Mohd Rasdan Ibrahim
Summary: The study shows that producing warm mix asphalt at a temperature 10 degrees C lower than hot mix asphalt yields the best results, while the performance of warm mix asphalt produced at 30 degrees C lower than hot mix asphalt is comparable. As the production temperature increases, the performance of warm mix asphalt improves.
APPLIED SCIENCES-BASEL
(2021)
Article
Green & Sustainable Science & Technology
Shaowei Zhang, Duanyi Wang, Feng Guo, Yihao Deng, Fuming Feng, Qiyang Wu, Zhaojie Chen, Yanbiao Li
Summary: The study evaluates the benefits of using compound WMA technologies in SBS modified bitumen, finding that a limited chemical reaction occurs between the novel foaming agent and SBS bitumen, which improves foaming behavior and enhances construction performance and resistance.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Green & Sustainable Science & Technology
Hu Jiangsan, Wang Lan, Wu Hui, Zhao Zihao, Guo Zhaoyang, Liu Heng
Summary: The warm mix recycling technology of asphalt pavement is an effective way to achieve carbon peak and carbon neutralization in the highway construction industry. This study systematically analyzes the regeneration mechanism of warm mixed recycled asphalt and provides a scientific basis for its popularization and application. The results show that the basic performance of asphalt can be restored after regeneration, but the viscoelasticity and anti-aging performance of recycled asphalt are relatively worse compared to matrix asphalt.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Construction & Building Technology
Mustafa Amoori Kadhim, Shakir Al-Busaltan, Anmar Dulaimi, Monower Sadique, Hassan Al Nageim, Muna Al-Kafaji, Rand Al-Yasari
Summary: This research aims to develop a sustainable half-warm asphalt mix that consumes less energy and is eco-friendly. The newly developed mix showed comparable or superior properties compared to the traditional mix, and successful sustainability aspect by replacing a significant amount of fine aggregate with crushed waste glass.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
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
Green & Sustainable Science & Technology
Hayder Kamil Shanbara, Anmar Dulaimi, Tariq Al-Mansoori, Shakir Al-Busaltan, Manar Herez, Monower Sadique, Talaat Abdel-Wahed
Summary: Road pavements are crucial for infrastructure, transportation, and economy, but have detrimental effects on the environment. Cold mix asphalt is a low carbon manufacturing method that allows production of flexible pavement material at ambient temperatures, reducing CO2 emissions and saving energy.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Construction & Building Technology
Martins Zaumanis, Maria Chiara Cavalli, Lily D. Poulikakos
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2020)
Article
Construction & Building Technology
M. C. Cavalli, E. Mazza, M. Zaumanis, L. D. Poulikakos
Summary: In this study, three different bio-based rejuvenators were added to the reclaimed asphalt pavement (RAP) binder to investigate their effects on microstructure. Atomic force microscopy (AFM) and quantitative nanomechanical mapping (QNM) were used to analyze the changes in surface elastic moduli. The results indicate that the addition of rejuvenators influences the microstructure and mechanical properties of RAP, providing insights into the relationship between surface and bulk properties of bitumen.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Engineering, Civil
Andrius Baltrusaitis, Audrius Vaitkus, Juris Smirnovs
BALTIC JOURNAL OF ROAD AND BRIDGE ENGINEERING
(2020)
Article
Construction & Building Technology
Mukul Rathore, Martins Zaumanis
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
Rolands Izaks, Mukul Rathore, Viktors Haritonovs, Martins Zaumanis
Summary: This study evaluates the performance of HMAC mixtures incorporating high content of RA material. The results show that satisfactory performance can be achieved by using PMB binder, especially for use in regions with extremely cold winters.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
M. Munoz, R. Haag, R. Figi, C. Schreiner, M. Zaumanis, M. C. Cavalli, L. D. Poulikakos, N. V. Heeb
Summary: The study investigated the impact of rejuvenators on reclaimed asphalt pavement, finding that rejuvenators did not mobilise 2-3 ring PAHs from RAP materials, and aging reduced the tendency for PAH leaching.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Chemistry, Physical
Mukul Rathore, Viktors Haritonovs, Martins Zaumanis
Summary: The study found that by adding a chemical additive, WMA mixtures can reduce mixing temperature compared to HMA, and virgin WMA mixtures show better crack resistance but lower rutting resistance than HMA. Additionally, using RA material without modification deteriorates the performance of WMA mixtures, and laboratory short-term aging significantly affects mixture performance.
Article
Engineering, Civil
Juris Kreicbergs, Juris Smirnovs, Aldis Lama, Janis Smirnovs, Atis Zarins
Summary: Latvia's road traffic safety improved significantly after gaining independence in the early 1990s, but still lags behind the EU average level and further improvements are needed.
BALTIC JOURNAL OF ROAD AND BRIDGE ENGINEERING
(2021)
Article
Construction & Building Technology
Martins Zaumanis, Dominique Loetscher, Samuel Mazor, Fabian Stoeckli, Lily Poulikakos
Summary: Experimental study shows that at high milling depth, increasing milling machine moving speed generates larger RAP chunks, leading to more filler content. Additionally, high temperature of milling picks does not age binder, and aggregate angularity is not correlated with milling parameters.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Hamzeh F. Haghshenas, Robert Rea, Gerald Reinke, Martins Zaumanis, Elham Fini
Summary: This study found that recycling agents can affect the softening and long-term performance of modified binders, but only a few can restore the rheological properties of binders. Experimental results show a strong linear relationship between the colloidal index and the chemo-rheological properties of binders.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Mukul Rathore, Viktors Haritonovs, Remo Merijs Meri, Martins Zaumanis
Summary: Rejuvenators improve the performance of reclaimed asphalt mixtures and have a significant impact on the stiffness of the binder. Binders aged in the long term show better fatigue life, and all rejuvenated binders exhibit rutting performance comparable to virgin binder. Fourier transform infrared spectroscopy shows increased carbonyl peak intensity after long-term aging, but the effect of aging on sulfonyl index remains unclear.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Martins Zaumanis, Lukas Boesiger, Bernhard Kunz, Henry Mazzoni, Peter Bruhin, Samuel Mazor, Lily Poulikakos
Summary: Three indexes, Chunk index, Breakdown index, and Filler increase index (CBF indexes), are proposed to evaluate RAP processing methods, allowing for quantitative comparison and optimization of crusher configuration.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Martins Zaumanis, Lily Poulikakos, Martin Arraigada, Bernhard Kunz, Urs Schellenberg, Christoph Gassmann
Summary: The study found that adding 30% to 50% Recycled Asphalt Pavement (RAP) into polymer-modified mixtures can achieve good performance, including crack propagation resistance, fatigue resistance, stiffness, and rutting resistance. Recommendations for the use of RAP in polymer-modified layers are provided based on these findings.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Proceedings Paper
Construction & Building Technology
I Paeglite, A. Paeglitis, J. Smirnovs
Summary: This study introduces a dynamic assessment method for evaluating the dynamic potential of bridges by considering five criteria such as natural frequency, damping ratio, span length/height ratio, relative deflection, and IRI coefficient. The method can be applied to different types of bridges, including reinforced concrete slabs, pre-stressed concrete slabs, and pre-stressed concrete ribbed slabs. It is suitable for both new and existing bridges.
BRIDGE MAINTENANCE, SAFETY, MANAGEMENT, LIFE-CYCLE SUSTAINABILITY AND INNOVATIONS
(2021)
Article
Construction & Building Technology
M. Zaumanis, M. Arraigada, L. D. Poulikakos
CONSTRUCTION AND BUILDING MATERIALS
(2020)