Article
Construction & Building Technology
Dongdong Han, Guoqiang Liu, Yinfei Xi, Yongli Zhao
Summary: This study aims to investigate the long-term strength and performance evolution of cold recycled mixture with emulsified asphalt (CRME). The results indicate that the Michaelis-Menten model can effectively describe the performance evolution of CRME over time. The aged asphalt in RAP still contributes to the strength formation and growth of CRME, but its aging degree has a negative effect. The dual effect of cement and emulsified asphalt is most pronounced in the short- and long-term strength evolution of CRME.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Han Zhao, Junda Ren, Zhuo Chen, Hai Luan, Junyan Yi
Summary: The use of cold recycling mixtures with foamed asphalt is an environmentally-friendly construction technology for pavement rehabilitation, but in cold regions, the impact of water on the mixtures can lead to freeze-thaw durability issues. Research on structural frozen-resistant protection behaviors and advanced material design is needed for future improvements in durability.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2021)
Article
Engineering, Geological
Shaocheng Ji
Summary: This paper studies the impact of fractures on the spacing of rock layers in sedimentary basins and proposes a new method for estimating the tensile fracture strength of rock layers. The Michaelis-Menten equation is used to derive a non-linear relationship between the spacing and thickness, and it has been successfully applied in sandstone areas.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Zili Zhao, Fujian Ni, Junqiu Zheng, Zhiqiang Cheng, Shengjia Xie
Summary: The curing effect on laboratory BE-CIR was evaluated by considering field-water evaporation and heat-transfer conditions. Testing results showed that the performance of the BE-CIR mixture with water addition was significantly different from that with no treatment, with higher moisture content and lower air void and ITS under the same curing time.
Article
Agricultural Engineering
Johanna Garavito, Anibal O. Herrera, Diego A. Castellanos
Summary: In this study, a combined respiration and transpiration model for fresh cape gooseberry fruits was proposed, taking into account changes in water activity and moisture content. Through parameter adjustments based on experimental data, the MMU kinetics model showed the best fit for describing changes in O-2 and CO2 concentrations. The logistic model appropriately described the relationship between fruit moisture content and water activity, while a close relationship was found between fruit transpiration, respiration rate, water activity, temperature, and relative humidity.
BIOSYSTEMS ENGINEERING
(2021)
Article
Green & Sustainable Science & Technology
Adulwit Nimsanor, Preeda Chaturabong
Summary: This article examines the effectiveness of the Pull-off Tensile Strength (POTS) test in evaluating the moisture damage resistance of asphalt mixtures. The POTS test is a low-cost and portable alternative to the current methods. The study investigates the effect of curing time and resting time on the POTS of asphalt-aggregate systems and finds a strong linear relationship between the tensile strength ratios of ITS and POTS tests.
Article
Plant Sciences
Tae In Ahn, Jong Hwa Shin, Jung Eek Son
Summary: This study aims to derive a nutrient control principle in an EC-based nutrient recycling soilless culture system through theoretical and experimental analysis. The results show that nutrient variations in different types of soilless culture systems can be integrated as a function of nutrient supply. Furthermore, stochastic simulation analysis indicates that the nutrient ratio reveals deterministic patterns and can be controlled through long-term feedback.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Construction & Building Technology
P. Orosa, G. Orozco, J. C. Carret, A. Carter, I. Perez, A. R. Pasandin
Summary: This study compares the volumetric and mechanical properties of cold recycled asphalt mixtures prepared with reclaimed asphalt pavement (RAP) from different sources and with various nominal maximum sizes (NMS). It was found that particle size distribution, temperature, and air void content were the most influential factors on the mechanical properties, while the differences in NMS showed no clear trends.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Polymer Science
Miroslav Cerny, Josef Petrus, Veronika Pavlinakova
Summary: This study presents a new mathematical approach to investigate the mechanical properties, composition, and structure of porous-filled reinforced composites. The proposed equations, based on a special mixing rule and correction parameter, effectively describe the mechanical behavior of these composites.
Article
Agronomy
E. C. Ekeoma, D. Boldrin, K. W. Loades, A. G. Bengough
Summary: The study aimed to investigate the effects of root drying on the biomechanical properties of Festuca arundinacea roots. The results showed that both tensile strength and Young's modulus significantly increased after drying, indicating that root drying can lead to stronger mechanical properties in roots.
Article
Construction & Building Technology
Raj Kumar, Arunkumar Goli, Bharath Varma Gottumukkala, S. Shankar, Kranthi Kumar Kuna
Summary: Improper curing of cold asphalt mixes can lead to excessive moisture and premature failures. This research investigated the impact of curing temperatures and periods on 100% Cold Recycled (CR) mixes with foamed and emulsified asphalt. The results showed that curing regime greatly affected moisture loss and the evolution of stiffness properties. The study suggested using stiffness as the criterion for evaluating proper curing.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Construction & Building Technology
Lwiza Meknaci, Andrea Graziani, Chiara Mignini, Ahmed Djafar Henni, Miomir Miljkovic
Summary: This research aimed to investigate the curing behavior of mortars prepared with different types of emulsions and sands, highlighting the importance of intrinsic properties of cationic emulsions and their compatibility with sand particles. The results showed that the estimated long-term indirect tensile strength at 5 degrees C of the mortars ranged from 1.14 to 1.52 MPa.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Article
Polymer Science
Jan Kruzelak, Klaudia Hlozekova, Andrea Kvasnicakova, Michaela Dzuganova, Jan Hronkovic, Jozef Pret'o, Ivan Hudec
Summary: This study investigated the effects of glycerine content on the curing process and properties of rubber compounds. The results showed that glycerine had a strong plasticizing effect on rubber and caused changes in the shape of the curing isotherms. The application of glycerine improved the homogeneity and dispersion of lignosulfonate in the rubber compounds, leading to enhanced physical-mechanical properties of the vulcanizates.
Article
Engineering, Civil
Chibuike Ogbo, Eshan Dave, Jo Sias
Summary: This study investigated the critical factors that affect the curing evolution of cold in-place recycling (CIR) materials. The results showed that the type and amount of stabilizer and active filler, initial moisture content, curing temperature (when active filler is present), and moisture reintroduction through external sources have a significant impact on curing evolution. Furthermore, the mechanical properties of CIR materials continue to improve even after reaching an equilibrium moisture condition.
TRANSPORTATION RESEARCH RECORD
(2022)
Article
Materials Science, Ceramics
Qinghua Chen, Bin Zou, Qingguo Lai, Yun Zhao, Kaiwen Zhu
Summary: This paper systematically evaluates the curing and interfacial tensile strength of a hydroxyapatite (HAP) printed part fabricated by stereolithography (SLA). It investigates the influence of irradiation parameters on the curing characteristics of HAP paste and establishes a modified critical laser exposure inequation to determine the curing range of HAP paste. The paper also tests and analyzes the influence of irradiation parameters on the interfacial tensile strength of the HAP printed part.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Construction & Building Technology
Chiara Mignini, Fabrizio Cardone, Andrea Graziani
Summary: Cold recycling is a sustainable pavement rehabilitation technology. A multiscale study shows that the type of cement has a critical effect on the mechanical behavior of CBTM mixtures, and fine aggregate matrix mortars can offer excellent prediction of mixture mechanical properties.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Simone Raschia, Taher Baghaee Moghaddam, Daniel Perraton, Hassan Baaj, Alan Carter, Andrea Graziani
Summary: This study investigated the compactability of CRM mixtures produced from different sources of RAP and their behavior in the small strain domain. It was found that the source of RAP significantly impacts the compaction energy and behavior of CRM mixes.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Simone Raschia, Daniel Perraton, Herve Di Benedetto, Sebastien Lamothe, Andrea Graziani, Alan Carter
Summary: This study investigates the rheological properties of cement bitumen-treated materials produced and conditioned at low temperatures in two different curing conditions. Results show that curing conditions and low production temperatures significantly alter the material's rheological properties, resulting in around 30% stiffness loss in the small strain domain. The study introduces a model, DBNPDSC, to describe the material behavior in the small strain domain, showing plastic nonviscous phenomena.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Correction
Construction & Building Technology
Andrea Graziani, Simone Raschia, Chiara Mignini, Alan Carter, Daniel Perraton
MATERIALS AND STRUCTURES
(2021)
Article
Materials Science, Characterization & Testing
Chiara Mignini, Amedeo Virgili, Andrea Graziani
Summary: This research investigates the effect of different composition factors on the densification behavior of CRAMs. A new empirical modeling approach is proposed to analyze the densification curves and determine the grading distribution as the main controlling parameter.
JOURNAL OF TESTING AND EVALUATION
(2022)
Article
Construction & Building Technology
Lwiza Meknaci, Andrea Graziani, Chiara Mignini, Ahmed Djafar Henni, Miomir Miljkovic
Summary: This research aimed to investigate the curing behavior of mortars prepared with different types of emulsions and sands, highlighting the importance of intrinsic properties of cationic emulsions and their compatibility with sand particles. The results showed that the estimated long-term indirect tensile strength at 5 degrees C of the mortars ranged from 1.14 to 1.52 MPa.
ROAD MATERIALS AND PAVEMENT DESIGN
(2022)
Editorial Material
Chemistry, Physical
Gilda Ferrotti, Andrea Graziani
Article
Materials Science, Multidisciplinary
Andrea Graziani, Andrea Grilli, Chiara Mignini, Alex Balzi
Summary: Cold recycling techniques in road construction have gained increasing interest due to their significant environmental benefits in terms of energy saving, emission reduction, and preservation of natural resources. The evolutive development of performance, known as the curing process, is one of the main differences between cold and hot techniques. Environmental factors such as temperature, humidity, wind, and rainfall greatly influence the curing process and, consequently, the properties of the mixture over time. The relationship between laboratory simulative procedures and field conditions remains a challenge.
ADVANCES IN MATERIALS SCIENCE AND ENGINEERING
(2022)
Article
Construction & Building Technology
Sara Spadoni, Andrea Graziani, Francesco Canestrari
Summary: Grouted macadam (GM), made of an open-graded asphalt skeleton filled with a cementitious grout, is commonly used in semi-flexible pavements due to its high stiffness and rutting resistance. Although GM can meet the engineering properties required by ports, airports, and industrial pavements, its global application is limited. The stiffening contribution of the grout improves fatigue life, but may also lead to brittle behavior.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Construction & Building Technology
Chiara Mignini, Fabrizio Cardone, Andrea Graziani
Summary: The complex modulus of CBTM mixtures, which are cold recycled materials containing both bituminous and cementitious binders, was characterized in this research. The study found that the composition of the aggregate skeleton and the fine aggregate matrix influenced the rheological behavior, and the aged binder in the reclaimed asphalt aggregate played a significant role.
MATERIALS AND STRUCTURES
(2022)
Article
Green & Sustainable Science & Technology
Enrico Mancinelli, Umberto Rizza, Francesco Canestrari, Andrea Graziani, Simone Virgili, Giorgio Passerini
Summary: The aim of this study is to analyze the changes in habits and modes of transport of travelers departing from airports and ports during the COVID-19 outbreak. The survey results show that during the pandemic, there was a decrease in the use of public transport among travelers, with more people choosing their own vehicles to travel to/from airports and ports due to safety and hygiene concerns. Additionally, both during and after the pandemic, travelers generally consider health factors when choosing their transportation mode.
Article
Construction & Building Technology
Francesco Canestrari, Lorenzo Paolo Ingrassia, Paolo Spinelli, Andrea Graziani
Summary: This study aims to develop a new method for assessing the remaining service life of motorway pavements. The method utilizes TSD measurements, adjusts for temperature using the surface curvature index SCI300, and estimates the residual fatigue resistance to determine the structural ranking and predict maintenance priorities for different pavement sections.
INTERNATIONAL JOURNAL OF PAVEMENT ENGINEERING
(2022)
Article
Construction & Building Technology
Ingrid Camargo, Bernhard Hofko, Andrea Graziani, Vittoria Grilli
Summary: Using reclaimed asphalt pavement (RAP) instead of virgin materials can reduce environmental impacts and costs. This study evaluates the feasibility of using DLTDP as a regeneration agent for RAP binders. Results show that DLTDP can partially restore the rheological and chemical composition of RAP binders without compromising adhesion properties and rutting resistance.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Construction & Building Technology
Vittoria Grilli, Amedeo Virgili, Andrea Graziani
Summary: In this study, laboratory experiments were conducted to characterize the complex modulus and fatigue properties of cold recycled materials mixtures with cement bitumen treatment. The results showed that the stiffness modulus values of small specimens were approximately 15% lower compared to the large specimens.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
Article
Construction & Building Technology
Chiara Mignini, Fabrizio Cardone, Andrea Graziani
Summary: This research investigates the complex modulus of fine aggregate matrix (FAM) mortars, which represent the binding matrix of CBTM mixtures. The study finds that the linear viscoelastic (LVE) behavior of FAM mortars is strongly influenced by the composition, particularly the bituminous components and cement. Additionally, the aged bitumen coating the reclaimed asphalt aggregate affects the LVE response of CBTM mortars and mixtures.
ROAD MATERIALS AND PAVEMENT DESIGN
(2023)
