Article
Engineering, Civil
A. F. Esen, P. K. Woodward, O. Laghrouche, T. M. Cebasek, A. J. Brennan, S. Robinson, D. P. Connolly
Summary: This research investigates the settlement behavior of a Geosynthetically Reinforced Soil with Retaining Wall (GRS-RW) system subject to cyclic loading for two track forms: a concrete slab track and a ballasted track. The study found that the concrete slab track performed significantly better in terms of elastic and plastic deformation under both static and cyclic loading.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Construction & Building Technology
Gang Jiang, Cheng Lin, Dong Shao, Mian Huang, Hongwei Lu, Gen Chen, Chenfeng Zong
Summary: Different levels of mechanical loading affect the response of energy piles under cyclic thermal loading, and the thermal cycle history also affects the rate of pile settlement caused by mechanical load. Driven energy piles respond differently to thermal cycles compared to bored energy piles due to the effect of pile construction.
ENERGY AND BUILDINGS
(2021)
Article
Engineering, Geological
C. Amendola, F. de Silva, A. Vratsikidis, D. Pitilakis, A. Anastasiadis, F. Silvestri
Summary: This paper discusses dynamic foundation impedance functions calculated from full-scale field tests on soil-structure interaction, showing that non-destructive tests like ambient noise tests can effectively be used to derive impedance functions and that uncertainties can be minimized by using resonance frequency to calibrate flexible-base models for soil-structure interaction analyses.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2021)
Article
Engineering, Geological
Zheng Luo, Chuang Zhao, Wenqing Cai, Qiusheng Gu, Weian Lin, Xuecheng Bian, Yunmin Chen
Summary: High-speed trains running on ballasted tracks cause more vibration and negative effects on train operations compared to conventional passenger trains. The effectiveness of geogrid stabilization in real railways under high-speed train moving loads is uncertain. Full-scale model tests were conducted to investigate the performance of ballasted trackbeds with and without geogrid stabilization. The results showed that geogrid stabilization reduces stress and damage to the trackbed and improves the performance of ballasted tracks.
Article
Construction & Building Technology
Samuel R. Matias, Patricia A. Ferreira, Jose A. Sainz-Aja, Joao Pomb
Summary: The growth of slab track construction is attributed to its high stability performance and low deterioration rates under high-demand railway traffic. However, maintenance of slab tracks can be costly and time-consuming, necessitating the development of tools for analyzing and predicting their performance over time to bring economic benefits to the railway industry.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Amanda Inglis, Judith Webber, Bronwyn Humphries, Matthew Ashworth, Louise Weaver
Summary: The study developed a laboratory-scale waste stabilisation pond system to investigate the effects of various parameters on wastewater treatment. The smaller scale model allowed for improved optimization and better control over viral concentration. Successful wastewater treatment was achieved, indicating the development of a microbial community within the system.
ENVIRONMENTAL TECHNOLOGY
(2022)
Article
Construction & Building Technology
M. Sol-Sanchez, J. M. Castillo-Mingorance, F. Moreno-Navarro, T. Mattinzioli, M. C. Rubio-Gamez
Summary: The study found that the smart sustainable pads can detect traffic load variations by measuring relative changes in signal amplitude of the sensor. However, the smart rail pads showed higher accuracy in monitoring axle loads, while the signals from the sub-ballast were influenced by the position of the sensor, allowing for a higher potential to monitor track performance, rail-sleeper load distribution and detecting phenomena like hanging sleepers.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Green & Sustainable Science & Technology
Matia Mainardis, Marco Buttazzoni, Fabian Gievers, Charlene Vance, Francesca Magnolo, Fionnuala Murphy, Daniele Goi
Summary: Different pretreatment technologies, such as low-temperature thermal treatment and ultrasonication, were investigated to increase biogas yield from sewage sludge. The study found that low-temperature thermal pretreatment showed the best performance in enhancing sludge solubilization and methane yield. LCA indicated that ultrasonication had the worst environmental impacts at laboratory scale, but could reduce greenhouse gas emissions, fossil depletion, and stratospheric ozone depletion at full-scale conditions.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Song Yin, Jianing Huang, Lingwei Kong, Xianwei Zhang, Pengfei Liu
Summary: This study investigates the strain stiffness behavior of granite residual soil (GRS) from Taishan in China using in situ and laboratory investigations. The results show that the variability in soil stiffness is influenced by factors such as depth, test method, and strain. The shear modulus obtained from laboratory tests is smaller than the curves from in situ tests, indicating the impact of sampling, transportation, and specimen preparation processes.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2022)
Article
Engineering, Geological
Zewen Wang, Wenhan Du, B. M. Lehane
Summary: This paper presents a new, simple, and inexpensive method for accurately measuring the three-dimensional deformation of soil specimens during triaxial tests. The method utilizes a cost-effective image capture system and an automated post-image analysis approach. The system achieves high accuracy in measuring axial and radial displacements, and it can determine the full nonlinear stiffness-strain degradation of soil samples without the need for additional sensors.
Article
Engineering, Geological
David J. Richards, William Powrie, Anthony P. Blake
Summary: Pile foundations for masts supporting overhead line equipment (OLE) on railways in Western Europe have traditionally been designed using empirical formulae derived from tests carried out in the 1950s under the auspices of the Union Internationale des Chemins de fer (UIC). Recent application in the UK of ostensibly more analytical approaches led to significantly increased pile lengths, which contributed to the high-profile cost over-run on the Great Western electrification programme. Full-scale field tests were carried out to investigate the deformation mechanisms of piles of different lengths and their performance under expected in-service loads. The results provide valuable insights and show that the empirical OLE master index (OLEMI) method and Eurocode 7 partial factors on load and undrained shear strength are likely to be sufficient to meet serviceability requirements for standard structures.
Article
Engineering, Civil
Bin Feng, Yuamar Imarrazan Basarah, Qiusheng Gu, Xiang Duan, Xuecheng Bian, Erol Tutumluer, Youssef M. A. Hashash, Hai Huang
Summary: This paper discusses an advanced testing effort in a controlled laboratory environment for measuring dynamic load responses and developing computer models suitable for full-scale ballasted track analysis. The study utilized various sensors to capture vibration velocities, soil stresses, and deformations caused by dynamic train loads, and compared the test data with preliminary Discrete Element Method simulations.
TRANSPORTATION GEOTECHNICS
(2021)
Article
Construction & Building Technology
Zhen Liu, Xingyu Gu
Summary: A method combining accelerated testing, non-destructive testing, and laboratory tests was proposed in this study to evaluate the performance and analyze conservation measures of typical pavement structures in Jiangsu, China. The material and structural properties of a full-scale road section were tested after loading one million times using a large mobile load simulator. The study provides important insights into asphalt pavement maintenance in Jiangsu and guidance for pavement maintenance in other regions.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Engineering, Civil
Yung-Yen Ko, Tung-Ying Tsai, Ken-Yan Jheng
Summary: The effect of soil liquefaction on buried pipelines critical to the serviceability of buildings was experimentally investigated. A physical model of pipelines buried in liquefiable ground was built, and shaking table tests were conducted using actual earthquake records. The uplift effect on natural gas and sewage distribution mains was observed during liquefaction. The research also examined the practicability of a simplified model for anti-uplift stability assessment and found that it may underestimate the uplift effect for large-diameter pipelines. This study provides valuable information for the seismic design of buried pipelines.
EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS
(2023)
Article
Engineering, Civil
A. R. Estabragh, M. Moghadas, A. A. Javadi, J. Abdollahi
Summary: This study investigated the effect of migration of two polymers, PEO and CMC, on improving clay soil. The results showed that both polymers significantly increased the settlement and undrained shear strength of the soil, with the optimum concentration being 4 g/L.
EUROPEAN JOURNAL OF ENVIRONMENTAL AND CIVIL ENGINEERING
(2022)
Article
Construction & Building Technology
Giacomo Cuciniello, Pietro Leandri, Sara Filippi, Davide Lo Presti, Giovanni Polacco, Massimo Losa, Gordon Airey
Summary: This study investigates the effect of laboratory-simulated ageing on Polymer Modified Bitumens (PMBs) and finds that cross-linked polymers have a higher capability of mitigating the hardening effect on bitumen rheological response compared to uncross-linked PMBs. The study also shows that the chemical composition of unmodified bitumens shifts towards heavier molecules after ageing, with limited variation with further ageing.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Nicholas D. Manke, R. Christopher Williams, Zahra Sotoodeh-Nia, Eric W. Cochran, Laurent Porot, Emmanuel Chailleux, Simon Pouget, Francois Olard, Ana Jimenez Del Barco Carrion, Jean-Pascal Planche, Davide Lo Presti
Summary: The recent research has shown that a novel bio-derived binder, stabilized with a polymer and made from refined pine chemistry, can increase the sustainability of asphalt mixes containing 50% Reclaimed Asphalt Pavement (RAP) while outperforming conventional binder mixes in resistance to thermal cracking. This study demonstrates that asphalt mixes with 50% RAP and a bio-derived binder can meet performance criteria without the use of neat bitumen at low, intermediate, and high temperatures.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Gustavo Menegusso Pires, Davide Lo Presti, Gordon Dan Airey
Summary: Using reclaimed asphalt (RA) in new asphalt mixtures can save money and resources, but limitations exist due to specifications and technical constraints. Analysis of aged RA binder is necessary to accurately determine requirements for virgin binders and additives, as well as quantify the blending degree between RA binder and virgin binder.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Zahra Sotoodeh-Nia, Nicholas Manke, R. Christopher Williams, Eric W. Cochran, Laurent Porot, Emmanuel Chailleux, Davide Lo Presti, Ana Jimenez del Barco Carrion, Juliette Blanc
Summary: An experimental study was conducted to evaluate the effectiveness of two bio-additives as rejuvenators on the properties of asphalt mixtures. The rejuvenators improved the low-temperature performance of the aged RAP binder. Statistical analysis showed no significant difference between measured and predicted complex modulus values, but differences between models appeared with aging of the binders.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Juan Gallego Medina, Gaspare Giancontieri, Davide Lo Presti
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Article
Construction & Building Technology
Gaspare Giancontieri, David Hargreaves, Davide Lo Presti
ROAD MATERIALS AND PAVEMENT DESIGN
(2020)
Article
Construction & Building Technology
Ahmed Abed, Nick Thom, Davide Lo Presti, Gordon Airey
MATERIALS AND STRUCTURES
(2020)
Article
Construction & Building Technology
Ana Jimenez del Barco Carrion, Ayad Subhy, Maria Angeles Izquierdo Rodriguez, Davide Lo Presti
CONSTRUCTION AND BUILDING MATERIALS
(2020)
Review
Green & Sustainable Science & Technology
Konstantinos Mantalovas, Gaetano Di Mino, Ana Jimenez Del Barco Carrion, Elisabeth Keijzer, Bjorn Kalman, Tony Parry, Davide Lo Presti
Article
Construction & Building Technology
Chiara Mignini, Davide Lo Presti, Gordon Airey, Andrea Graziani
Summary: The study aimed to characterize CBE materials using rotational viscometry and investigated the effect of mineral additions and bitumen emulsions types on their performance. The Krieger-Dougherty model proved to be a powerful tool for improving CBE materials engineering. The use of a dual helical ribbon in viscometry was found to be promising for rheological characterization of CBE slurries.
ROAD MATERIALS AND PAVEMENT DESIGN
(2021)
Article
Construction & Building Technology
Jorge C. Pais, Caio R. G. Santos, Davide Lo Presti
Summary: This study showed that incorporating fibers from tire recycling into asphalt mixtures can enhance pavement performance, but it is crucial to ensure a sufficient binder content in the investigated fiber-modified mixtures.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Construction & Building Technology
Ayad Subhy, Davide Lo Presti, Gordon Airey, Iswandaru Widyatmoko
Summary: This study evaluated the rutting resistance of SMA mixtures produced with different rubberised bitumens, finding that the non-recoverable creep compliance (Jnr) from MSCR tests had the best correlation with rutting resistance. Additionally, a more fundamental analysis was provided by assessing the conditions of binder films in the mixtures.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Engineering, Civil
Lily D. Poulikakos, William Buttlar, Nicolas Schuwer, Davide Lo Presti, Tobias Balmer, Moises Bueno
Summary: Laboratory scale mechanical performances of asphalt mixtures modified with engineered crumb rubber were investigated, showing that ECR mixtures performed well in most aspects and met relevant standard requirements. In advanced testing, ECR mixtures performed similarly to reference polymer mixtures in high temperature tests, but slightly worse in semi-dense mixtures, while performing similarly or better in low temperature tests.
SUSTAINABLE AND RESILIENT INFRASTRUCTURE
(2022)
Article
Construction & Building Technology
Ramon Botella, Davide Lo Presti, Kamilla Vasconcelos, Kinga Bernatowicz, Adriana H. Martinez, Rodrigo Miro, Luciano Specht, Edith Arambula Mercado, Gustavo Menegusso Pires, Emiliano Pasquini, Chibuike Ogbo, Francesco Preti, Marco Pasetto, Ana Jimenez del Barco Carrion, Antonio Roberto, Marko Oreskovic, Kranthi K. Kuna, Gurunath Guduru, Amy Epps Martin, Alan Carter, Gaspare Giancontieri, Ahmed Abed, Eshan Dave, Gabrielle Tebaldi
Summary: This paper describes the development of a novel computational framework that accurately predicts the degree of binder activity in a reclaimed asphalt pavement sample. Different machine learning techniques were applied to obtain precise data representation models.
MATERIALS AND STRUCTURES
(2022)
Article
Construction & Building Technology
Ayad Subhy, Davide Lo Presti, Gordon Airey, Paul Edwards
Summary: This study evaluates the performance of different rubberised stone mastic asphalt mixtures produced using different types and contents of rubberised bitumen. The results show that using the same binder content as conventional mixtures can still provide superior performance properties.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)