Article
Green & Sustainable Science & Technology
Abirami Manoharan, C. Umarani
Summary: Lime mortar has numerous benefits, such as being minimally processed and having a lower carbon footprint, as well as its carbon absorption properties. This research explores the strength and durability properties of lime, as well as the use of fermented additives to enhance traditional lime mortar. The experimental results indicate that the use of naturally fermented organic materials has made lime structures stronger, with stable components and a self-healing capacity.
Article
Chemistry, Multidisciplinary
B. A. Silva, A. P. Ferreira Pinto, A. Gomes, A. Candeias
Summary: The study found that curing lime-based materials in an environment rich in CO2 can accelerate the carbonation process and achieve a higher degree of carbonation. Even though total carbonation was not achieved, minimal property changes are expected after accelerated carbonation.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Engineering, Environmental
E. Vitale, D. Deneele, G. Russo
Summary: This study presents a multi-scale experimental investigation on the carbonation process and its impact on the chemo-mechanical behavior of lime-treated soil. The research reveals that the carbonation process affects the chemo-mineralogical evolution of lime-treated soils, depending on the time scale at which the reaction mechanism takes place. In the short term, carbonation of portlandite leads to the formation of calcium carbonate, while in the long term, carbonation of secondary phases weakens the bonding effects induced by hydrated compounds.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Construction & Building Technology
Joonho Seo, Seonhyeok Kim, Solmoi Park, S. J. Bae, H. K. Lee
Summary: The carbonation of lime-slag binary binders results in stable carbonates, pore refinement, and strength enhancement; compared to other binders, lime-slag binary binders exhibit less shrinkage during the process. The carbonation shrinkage behavior of lime-slag binary binders is similar to that of cement due to the presence of portlandite as a carbonation buffer.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Construction & Building Technology
Hee-Young Hwang, Yang-Hee Kwon, Sung-Gul Hong, Sung-Hoon Kang
Summary: This study compared the effects of different additives on the properties of lime-clay mortar. Hydroxypropyl methylcellulose and seaweed paste significantly increased the strength of the mortar, while starch and sticky rice paste slightly increased the strength. The mechanisms of strength improvement varied depending on the type of additive.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Construction & Building Technology
Ana Kontic, Graca Vasconcelos, Carolina Briceno Melendez, Miguel Azenha, Neda Sokolovic
Summary: This study analyzed the physical, mechanical, and carbonation progress properties of lime mortars with air entrainers, aiming to investigate the influence of air entrainers on these properties. The samples were cured under two conditions, and their properties were evaluated at different time intervals. The results showed that the addition of air entrainers affected the dynamics between drying and carbonation processes, thereby influencing the rate of carbonation process. This observation was reflected in the carbonation progress as well as the physical and mechanical properties of the samples.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Environmental Sciences
Kai Luo, Ke Peng, Jun Li, Zhongyuan Lu, Jun Jiang
Summary: The study found that steel slag inhibits the early hydration of cement, limiting its application in cement-based materials. However, it promotes carbonation in the later stages of the process. Adding more than 10% steel slag inhibits the formation of hydration products, increases the porosity of the mortar, and reduces the compressive strength. The carbonation area and captured CO2 content increase exponentially with an increasing carbonation curing age.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Geunyoung Kim, Sehun Kim, Myoung-Jin Kim
Summary: This study investigates the effects of adding sucrose to seawater in an indirect carbonation process. The results show that sucrose addition increases CO2 storage, vaterite content, and decreases the size of CaCO3 particles. Adding sucrose before Ca elution is more advantageous than adding sucrose after, as it leads to higher vaterite content and smaller particle size. This technology has the potential for economically producing small-sized pure vaterite using seawater and sucrose.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Construction & Building Technology
Geetanjali Das, Andry Razakamanantsoa, Lucile Saussaye, Francesca Losma, Dimitri Deneele
Summary: The effect of carbonation on the structure of lime-treated soil exposed to the atmosphere for one year is investigated. Carbonation is found to increase the formation of macropores in the soil.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Construction & Building Technology
Kai Luo, Jun Li, Ke Peng, Zhongyuan Lu, Li Hou, Jun Jiang
Summary: In this study, natural hydraulic lime (NHL) was prepared by calcining calcite tailings and digesting the clinker. The prepared NHL met the requirements of NHL5 standard lime mortar. Carbonation of the prepared NHL5 refined the pore size and improved the compressive strength of the hardened mortar. The prepared NHL5 could be considered as an environmentally friendly cementitious material due to its utilization of waste, lower energy consumption, and higher CO2 recycling rate.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Review
Engineering, Environmental
Dhanalakshmi Padmaraj, Dali Naidu Arnepalli
Summary: Carbonation is a harmful reaction in lime-stabilized earthworks as it leads to lime consumption, compromises the stability of cementitious phases, and affects the cohesion and shear strength of stabilized clays. Despite extensive research on the carbonation mechanism in cement and concrete, the understanding of carbonation in lime-treated soils is limited.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Article
Construction & Building Technology
Xiangxiang Chang, Songhui Liu, Cheng Zhang, Peiliang Shen, Dongxing Xuan, Xuemao Guan, Caijun Shi
Summary: A low calcium CO2 sequestration binder (LC-CSB) was prepared by calcination of industrial raw materials limestone and sandstone, which can produce high-strength prefabricated building materials and reduce CO2 emissions. The compressive strength of the LC-CSB mortar after carbonation for 24 hours reached 43.2 MPa. The interfacial transition zone (ITZ) between carbonated LC-CSB paste and siliceous river sand aggregate was more easily carbonated and showed an enrichment of calcite crystals with increased carbonation duration, while the porosity was significantly reduced.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Fangfang Zhi, Yu Jiang, Ming-Zhi Guo, Weizhun Jin, Xiancui Yan, Pengfei Zhu, Linhua Jiang
Summary: This study investigated the influence of polyacrylamide on the carbonation behaviors of cement pastes. It was found that polyacrylamide reduces the amount of portlandite and alters its morphology, enhancing its reactivity with CO2. It also results in the formation of C-S-H phases with a higher carbonation rate and improves pore refinement.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Construction & Building Technology
Zhen Li, Ying Hua, Zixun Chang, Yanfei Yue, Jihui Qin, Jueshi Qian
Summary: This study investigated the effect of lime addition on the performance and CO2 sequestration capacity of blended reactive MgO cement (RMC). The results showed that the incorporation of lime promoted the setting and initial heat generation of RMC, and increased its CO2 absorption capability. Carbonation curing improved the strength and microstructure of the blended RMC by reducing porosity and increasing density. Samples with 20% lime content had significantly higher compressive strength compared to plain samples.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Rakibul I. Khan, Warda Ashraf, Jan Olek
Summary: This study investigated the application of amino acids in controlling CaCO3 crystallization in carbonation cured wollastonite composites. The use of amino acids resulted in the formation of stable ACC, vaterite, and aragonite, as well as enhanced flexural and compressive strength of the composites. These improvements were attributed to the reduced critical pore size and the formation of organic-inorganic hybrid phases in the matrix.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Environmental Sciences
Marco Corradi, Enea Mustafaraj, Emanuela Speranzini
Summary: This paper addresses the issue of sustainability in the remediation and seismic upgrading of historic masonry structures. It describes different rehabilitation techniques and successful applications, with a focus on shear reinforcement of wall panels. The selected techniques aim to improve seismic performance, preserve architectural and heritage values, and be sustainable in terms of reduced carbon dioxide emissions, reversibility, and low energy consumption. The use of cross-laminated timber, natural fibers, and fiber-reinforced polymers is also discussed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Geological
Julian Thamboo, Marco Corradi, Keerthan Poologanathan
Summary: This study aims to establish rational design approaches to predict the shear resistance of reinforcement methods such as welded wire meshing, reticulatus, and plastering. The effectiveness of these methods was evaluated by comparing their structural performances. A unified approach to estimate the shear strength was proposed based on the contribution of different strengthening materials.
BULLETIN OF EARTHQUAKE ENGINEERING
(2023)
Article
Construction & Building Technology
Kajaharan Thirunavukkarasu, Elilarasi Kanthasamy, Keerthan Poologanathan, Shanmuganathan Gunalan, Perampalam Gatheeshgar, Konstantinos Daniel Tsavdaridis, Marco Corradi
Summary: This study comprehensively assesses the flexural performance of SupaCee sections with web openings, proposes new design provisions, and compares them with existing design standards. Additionally, a comparison between SupaCee sections and Lipped Channel Beams is conducted, leading to recommendations for replacing conventional CFS sections with SupaCee sections.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Engineering, Biomedical
Fei Wei, Craig J. Neal, Tamil Selvan Sakthivel, Yifei Fu, Mahmoud Omer, Amitava Adhikary, Samuel Ward, Khoa Minh Ta, Samuel Moxon, Marco Molinari, Jackson Asiatico, Michael Kinzel, Sergey N. Yarmolenko, Vee San Cheong, Nina Orlovskaya, Ranajay Ghosh, Sudipta Seal, Melanie Coathup
Summary: The disability, mortality, and costs caused by ionizing radiation-induced osteoporotic bone fractures are substantial. However, there is currently no effective therapy available. This study demonstrates that engineered artificial nanozymes composed of cerium oxide can mitigate the bone loss caused by ionizing radiation and protect against DNA damage, cellular senescence, and elevated osteoclastic activity. The nanozymes also promote new bone formation and regulate osteoclast formation, making them a promising approach for preventing radiation-induced bone loss.
BIOACTIVE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Nabeel Anwar, Robert M. Harker, Mark T. Storr, Marco Molinari, Chris-Kriton Skylaris
Summary: CeO2 (ceria) is a vital material in solid oxide fuel cells and catalysis, and its defect chemistry has been revised using DFT+U calculations. The ground state of an oxygen vacancy is associated with two neighbouring reduced cerium sites, while a cerium vacancy is the least favourable defect. Displacing an oxygen interstitial defect leads to the formation of a stable peroxide species. The energetic ordering of Schottky defects is affected by the size of the supercell, with S<111> being more favourable than S<110> for larger simulation cells.
COMPUTATIONAL MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Yavuz Yardim, Salih Yilmaz, Marco Corradi, Waleed A. Thanoon
Summary: This study examines the effectiveness of using carbon-FRP anchors to improve the confinement of square reinforced concrete columns strengthened with FRP. The proposed anchors distribute stresses more uniformly, resulting in better confinement.
Article
Chemistry, Physical
Enea Mustafaraj, Marco Corradi, Yavuz Yardim, Erion Luga, Muhammed Yasin Codur
Summary: This study investigates the use of ferrocement jacketing, polypropylene fibers, and CFRP sheets to enhance the shear resistance of unreinforced brick masonry. 12 wall panels were tested in diagonal compression, three of which were strengthened using each of the mentioned techniques. The results demonstrate significant improvement in shear resistance and deformation capacity of the walls, indicating the viability and effectiveness of ferrocement jacketing as a strengthening method for masonry structures.
Article
Engineering, Civil
Heshachanaa Rajanayagam, Chua Yie Sue, Irindu Upasiri, Keerthan Poologanathan, Brabha Nagaratnam, Kate O'Grady, Marco Corradi
Summary: This study investigates the load response behavior, working mechanism, and performance change of endplate-type intermodular connections with varying design parameters. The performance and capacity of these connections under tensile and shear loads were evaluated using theoretical and numerical approaches. The results from parametric studies indicate that changes in design parameters have a greater impact on shear performance and capacity. This research helps identify the optimum design parameter combinations for enhanced connection performance that are also cost-effective.
Editorial Material
Construction & Building Technology
Keerthan Poologanathan, Gatheeshgar Perampalam, Shanmuganathan Gunalan, Marco Corradi
Proceedings Paper
Construction & Building Technology
Cecilia Pesce, Martha C. Godina, Alison Henry, Giovanni L. Pesce
Summary: The practice of hot-mixing lime mortars, which involves slaking quicklime directly in sand, has been found to be more common in the past and is regarded by craftsmen as superior to putty-based mortars in terms of workability and durability. However, there is limited research on the role of steam in slaking lime and its impact on the characteristics of the lime. This study investigates the effects of steam slaking on lime characteristics and provides useful information for conservators in choosing the right materials and slaking methods for compatible mortars.
PROCEEDINGS OF THE 75TH RILEM ANNUAL WEEK 2021
(2023)
Article
Construction & Building Technology
Romina Sisti, Marco Corradi, Alberto Balsamo, Marco Di Ludovico, Andrea Prota, Emanuela Speranzini, Alessio Molinari
Summary: This paper presents the experimental investigation on the seismic vulnerability of a type of cavity wall and compares different retrofit solutions. The results demonstrate that reinforcing the cavity wall with GFRP rods and a FRCM coating can significantly enhance its bending and out-of-plane load capacity.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Civil
Giulio Castori, Fitsum Haile, Marco Corradi, Jill Adkins
Summary: Shear walls in historic constructions often require retrofit, and threaded titanium rods embedded in mortar bed joints have emerged as a viable solution. This research investigated the structural response of reinforced walls through laboratory tests and numerical modelling, demonstrating the effectiveness of using titanium rod reinforcement and proposing a step-by-step procedure for designing and predicting the strengthening system using digital image processing techniques.
ENGINEERING STRUCTURES
(2024)
Article
Chemistry, Physical
Yifei Fu, Craig J. Neal, Elayaraja Kolanthai, Sidra Munir, Khoa Minh Ta, Marco Molinari, Sudipta Seal
Summary: A simple hydrothermal method was used to synthesize cubic shaped CeNPs through homogeneous precipitation by introducing acetate molecules. The role of acetate in directing the morphological transition of CeNPs and providing a pH-buffered environment was demonstrated by experimental and computational studies.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
