Article
Construction & Building Technology
Munique Fante, Francisco Roger Carneiro Ribeiro, David Brandao Nunes, Regina Celia Espinosa Modolo, Claudio de Souza Kazmierczak, Mauricio Mancio, Francisco Manoel Wohnrath Tognoli, Afonso Rangel Garcez de Azevedo, Marlova Piva Kulakowski
Summary: This study evaluated the physical and chemical effects of calcium carbonate limestone filler in mortar pastes subjected to accelerated carbonation. Results showed that a 25% filler substitution at a water/cement ratio of 0.42 achieved the best performance in terms of compression strength and water absorption. Carbonation primarily affected by the water/cement ratio rather than substitution level, consuming portlandite and forming calcite. Further studies identified additional calcium carbonate polymorphs after 28 days of accelerated carbonation.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2022)
Article
Multidisciplinary Sciences
Carlos Rodriguez-Navarro, Luis Monasterio-Guillot, Miguel Burgos-Ruiz, Encarnacion Ruiz-Agudo, Kerstin Elert
Summary: Ancient Maya produced durable lime plasters using organics and calcite cement similar to biominerals. By adding polysaccharide-rich bark extracts, replicas with similar features were created, showing enhanced toughness and weathering resistance. The lime technology developed by ancient Maya exploited a biomimetic route for improving carbonate binders performance.
Article
Geochemistry & Geophysics
Scott D. Midgley, Dominik Fleitmann, Ricardo Grau-Crespo
Summary: The presence of bromine as a trace-element in calcium carbonate speleothems is a useful proxy for past volcanic activity. However, the chemical nature of bromine-containing impurities in speleothems is not well-understood, which hinders the interpretation of experimental measurements. A computer simulation study based on quantum mechanical calculations was conducted to investigate the incorporation of bromine in calcium carbonate polymorphs. The study discusses the distribution of bromate oxyanions and charge-compensating cations and predicts their stability and solubility limits.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Engineering, Manufacturing
Kuangnan Zhong, Zhichao Liu, Fazhou Wang
Summary: In this study, printable gamma-C2S slurries were developed based on the carbonation of calcium silicate, and their printability was demonstrated using extrusion-based layer deposition. The rheology of the slurry was controlled by three modifying agents, including CMC, HPMC, and PAM. The printed samples exhibited high compressive strength and inter-layer bonding strength, which can be attributed to the diffusion of carbonation reaction and densification by carbonation products. The proposed printing-carbonation synergistic enhancement technique allows for independent design and expands the diversity of geometrical designs in 3D printing structures.
ADDITIVE MANUFACTURING
(2023)
Article
Construction & Building Technology
Ting Jiang, Kai Cui, Jun Chang
Summary: The extensive use of Portland cement with a large carbon footprint has caused a significant climate crisis. The proportions of β-C2S and γ-C2S in C2S paste are positively correlated with compressive strength and carbonation degree. An optimum value of compressive strength (54.4 MPa) and carbonation degree (36.7%) can be achieved when β-C2S is 60 wt% and γ-C2S is 40 wt%.
CEMENT & CONCRETE COMPOSITES
(2023)
Article
Engineering, Chemical
Mingzhi Luo, Guoquan Zhang, Yuguo Fang, Lingzhuo Cao, Zhanbo Guo, Kun Wang, Jia Li
Summary: This article presents a two-step synthesis method for synthesizing calcium carbonate using ammonium carbonate and calcium chloride as raw materials. The pH of the mineralized solution was studied under different factors, such as temperature and ammonium carbonate concentration. The results showed that increasing the temperature promoted the formation of submicron calcite type calcium carbonate, while changing the concentration of ammonium carbonate had little effect on the crystal phase and size of the product.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Physical
Dalia Ezzeddine, Rabih Sultan
Summary: This study investigates the formation of CaCO3 zonation through a displacement reaction in the solid phase. The obtained calcium carbonate shows diverse mosaic patterns, interesting 3D zonation, and Liesegang banding. Various differentiated zones and crystalline forms within the patterns are characterized using pH measurements, scanning electron microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), and powder X-ray diffraction (XRD).
JOURNAL OF MOLECULAR LIQUIDS
(2022)
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)
Review
Construction & Building Technology
Graciela Ma, Rodrigo Gay Ducati, Rafael Mascolo, Claucia Fernanda Volken de Souza
Summary: This review provides an overview of the use of microorganisms in concrete or mortar mixtures to enhance their properties and repair cracks. Various microorganisms have been applied to these materials in different ways, with positive results in terms of strength, porosity, resistance to aggressive environments, and crack healing.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mengying Zhang, Hang Li, Chi Wang, Zhaohui Wang, Da Liu, Tao Yang, Zebin Deng, Guangming Yuan
Summary: Inspired by natural biomineralization, wood composites were treated with sodium alginate and calcium ions to significantly enhance their mechanical properties, flame retardancy, and smoke suppression abilities. The induction of orderly deposition and directional crystallization by sodium alginate promoted effective adhesion of CaCO3 within the wood, leading to improved performance in various aspects.
Article
Geochemistry & Geophysics
Zsombor Molnar, Istvan Dodony, Mihaly Posfai
Summary: This study found that clay minerals have an important influence on the crystallization process of amorphous calcium carbonate (ACC), promoting the rapid growth and coalescence of ACC particles on their surface, resulting in larger particle sizes and the conversion into calcite. Furthermore, the presence of magnesium ions significantly increases the stability of ACC, leading to the formation of aragonite instead of calcite.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Engineering, Environmental
Dasol Choi, Soyoung Noh, Youngjune Park
Summary: Calcium looping (CaL)-based solar to thermochemical energy storage is a promising option for long-term thermal energy storage in concentrated solar power generation. In this study, multi-doping of transition metals and CaCl2 was investigated to enhance the optical absorption and carbonation reactivity of synthetic CaO-based materials. The proposed materials exhibited significantly enhanced optical absorption and maintained high performance throughout multiple cycles of CaL reactions. The reaction mechanism was studied, and a salt-promoted carbonation mechanism was proposed to improve the mass transfer of Ca2+O2- to adsorbed CO2. Based on the findings, the synergistic use of CaCl2 multi-doping method for synthetic CaO designs is suggested.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Construction & Building Technology
Yu Diao, Pengjin Li, Jianyou Huang, Shi Liu, Xin Guo, Chenlei Jiao
Summary: This study proposed biomimetic mineralized mortar based on the BCICP method with boric acid as a crystal modifier. Boric acid can promote the nucleation of calcium carbonate and change its precipitation mode. The addition of boric acid enhances the reinforcement efficiency of calcium carbonate and improves the cementation between calcium carbonate and sand particles.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Li-Mei Shang, Jun Jiang, Shu-Hong Yu
Summary: This study reports a facile method to synthesize corn-like Mg-calcite mesocrystals using only Ca2+ and Mg2+ from pure ACC. The resulting mesocrystals consist of many nanocubes with common crystallographic orientation, displaying excellent single crystal features. In the crystallization process, ACC nanospheres rapidly agglomerate into Mg-calcite corn-like mesocrystals through oriented attachment in a certain direction, shedding new light on the role of seawater in the formation of biological Mg-calcite.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Ouassef Nahi, Alexander N. Kulak, Shuheng Zhang, Xuefeng He, Zabeada Aslam, Martha A. Ilett, Ian J. Ford, Robert Darkins, Fiona C. Meldrum
Summary: This study demonstrates the remarkable control ability of cationic polyamines over the crystallization of calcium carbonate, promoting nucleation of aragonite at low concentrations and inhibiting its growth at high concentrations. The results reveal a mechanism of interaction between polyamines and magnesium ions that allows unprecedented control over aragonite formation.
Article
Chemistry, Physical
Zhengxin Gao, Xianglin Zhai, Chengyu Wang
APPLIED SURFACE SCIENCE
(2015)
Article
Chemistry, Applied
Zhengxin Gao, Xianglin Zhai, Feng Liu, Ming Zhang, Deli Zang, Chengyu Wang
CARBOHYDRATE POLYMERS
(2015)
Article
Chemistry, Physical
Jiulong Xie, Xianglin Zhai, Chung Yun Hse, Todd F. Shupe, Hui Pan
Article
Materials Science, Ceramics
Ming Zhou, Deli Zang, Xianglin Zhai, Zhengxin Gao, Wenbo Zhang, Chengyu Wang
CERAMICS INTERNATIONAL
(2016)
Article
Materials Science, Multidisciplinary
Wenbo Zhang, Xianglin Zhai, Tianhao Xiang, Ming Zhou, Deli Zang, Zhengxin Gao, Chengyu Wang
JOURNAL OF MATERIALS SCIENCE
(2017)
Article
Chemistry, Physical
Xianglin Zhai, Neepa Malsi Kumari Kuruppu Arachchige, Pedro Derosa, Jayne C. Garno
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2017)
Article
Chemistry, Multidisciplinary
Xianglin Zhai, Denzel Alexander, Pedro Derosa, Jayne C. Garno
Article
Chemistry, Multidisciplinary
Susan D. Verberne-Sutton, Rashanique D. Quarels, Xianglin Zhai, Jayne C. Garno, Justin R. Ragains
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2014)
Article
Biochemistry & Molecular Biology
Xianglin Zhai, Han Ju Lee, Tian Tian, T. Randall Lee, Jayne C. Garno
Article
Nanoscience & Nanotechnology
Tian Tian, Burapol Singhana, Lauren E. Englade-Franklin, Xianglin Zhai, T. Randall Lee, Jayne C. Garno
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2014)
Article
Materials Science, Characterization & Testing
Shihua Xu, Yiqun Fang, Shunmin Yi, Jun He, Xianglin Zhai, Yongming Song, Haigang Wang, Qingwen Wang
Review
Materials Science, Multidisciplinary
Xin Xie, Sanwei Liu, Chenye Yang, Zhengyu Yang, Tian Liu, Juncai Xu, Cheng Zhang, Xianglin Zhai
C-JOURNAL OF CARBON RESEARCH
(2017)
Article
Chemistry, Multidisciplinary
Zhengxin Gao, Miaolian Ma, Xianglin Zhai, Ming Zhang, Deli Zang, Chengyu Wang
Meeting Abstract
Chemistry, Multidisciplinary
Susan D. Verberne-Sutton, Rashanique Quarles, Xianglin Zhai, Justin R. Regains, Jayne C. Garno
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2014)
Meeting Abstract
Chemistry, Multidisciplinary
Xianglin Zhai, Han Ju Lee, T. Randall Lee, Jayne C. Garno
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2014)
Article
Engineering, Chemical
Ri Zhang, Shasha Zhang, Mengyan Ding
Summary: A thin liquid film method is proposed to evaluate sand erosion in annular flow. This method considers the direct interaction between the liquid film and gas core, as well as the entrainment and deposition of droplets. The erosion rate is calculated by considering the effects of liquid entrainment and particle velocity decay. The method is fully verified by comparing with experimental data.
Article
Engineering, Chemical
Yu Suo, Xianheng Su, Wenyuan He, Xiaofei Fu, Zhejun Pan
Summary: This research investigates the mechanical properties of sandstone-shale composite through orthogonal experimental method and discrete element simulation. The results show that different lithologies and thickness ratios can affect the strength and fracture mode of the composite rock samples.
Article
Engineering, Chemical
Maurizio Troiano, Andrea El Hassanin, Roberto Solimene, Alessia Teresa Silvestri, Fabrizio Scala, Antonino Squillace, Piero Salatino
Summary: This study investigates the potential of Fluidized Bed Finishing (FBF) for square flat AlSi10Mg specimens manufactured via Laser-Powder Bed Fusion (L-PBF) additive manufacturing technology. The results show that good finishing can be achieved using rotation-assisted tests, with a maximum reduction of surface roughness by 67%. Steel particles are found to be the most effective bed material.
Review
Engineering, Chemical
Ningbo Song, Wanzhong Yin, Jin Yao
Summary: Seawater's dissolved salts and minerals have various effects on the flotation process, including influencing the characteristics and behavior of flotation factors, as well as affecting the surface of sulfide minerals. In most cases, seawater has adverse effects on the flotation of sulfide minerals, but these effects can be mitigated by adjusting the reagents.
Article
Engineering, Chemical
Kaiqiao Wu, Shuxian Jiang, Victor Francia, Marc-Olivier Coppens
Summary: In rectangular and cylindrical annular fluidized beds, pulsating gas flow can create regular bubble patterns, overcoming challenges seen in conventional units. This study provides new opportunities for modularization of fluidized bed operations.
Article
Engineering, Chemical
Shuo Li, Huili Zhang, Jan Baeyens, Miao Yang, Zehao Li, Yimin Deng
Summary: The paper assesses the behavior of cohesive Geldart C-type particles when fluidized by air with the aid of vibration. It determines that mechanical vibration is a simple and effective method to improve the fluidity of cohesive particles during fluidization.
Article
Engineering, Chemical
Zhenfei Feng, Qingyuan Zhang, Shanpan Liang, Zhenzhou Li, Fangwen Guo, Jinxin Zhang, Ding Yuan
Summary: A new micro/mini-channel heat sink (MCHS) with a combined structure of longitudinal and transverse vortex generators is designed, using Al2O3 nanofluid as the working medium. The study explores the effects of transverse vortex generator shape and longitudinal vortex generator angle on the hydraulic and thermal characteristics, comprehensive performance, entropy generation, and exergy efficiency. The results show that the triangular transverse vortex generator improves the comprehensive performance and exergy efficiency. Combined with the longitudinal vortex generator, the MCHS achieves the best comprehensive performance, entropy generation, and exergy efficiency when the Reynolds number is 742.
Article
Engineering, Chemical
Kostas Giannis, Christoph Thon, Guoqing Yang, Arno Kwade, Carsten Schilde
Summary: This study presents a 3D convolutional neural network (3D-CNN) methodology for generating realistic 3D models of particles. The method trains on 2D projections of particle images to predict their 3D shapes, and evaluates the accuracy of the predictions using Fourier shape descriptors (FSDs). This methodology has wide applications in particle shape analysis.
Article
Engineering, Chemical
Zheng-qing Zhou, Lu-jia Chai, Yu-long Zhang, Ya-bin Wang, Ze-chen Du, Tian-yi Wang, Yu-zhe Liu
Summary: The dynamic oxidation and shell-breaking processes of aluminum nanoparticles (ANPs) during heating were studied using in situ transmission electron microscopy. The results revealed that the changes in shell thickness can be divided into three stages, and the active aluminum content of ANP decreased before shell-breaking.
Article
Engineering, Chemical
Fulei Chen, Huaqing Ma, Zihan Liu, Lianyong Zhou, Yongzhi Zhao
Summary: A particle breakage model based on the particle replacement scheme, using the polyhedral model to describe particles, is proposed in this work to accurately describe the breakage of a large number of particles. Additionally, a fast-cutting algorithm is proposed to reproduce the size distribution of progeny particles determined by the breakage model. The validation and simulation results show satisfactory accuracy, efficiency, and stability of the algorithm.
Review
Engineering, Chemical
Matteo Errigo, Christopher Windows-Yule, Massimiliano Materazzi, Dominik Werner, Paola Lettieri
Summary: Gas-solid fluidized-bed systems have advantages in terms of chemical reaction efficiency and temperature control, making them widely used in industrial applications. However, the design, scale-up, and optimization of these complex units are limited by the lack of deep physical understanding. Non-invasive and non-intrusive diagnostic techniques provide a way for researchers to study these systems without affecting the flow field or directly contacting the medium under study.
Article
Engineering, Chemical
Saeed Fateh, Mohammad Behshad Shafii, Mohammad Najafi, Cyrus Aghanajafi
Summary: Applying a magnetic field to ferrofluids alters their flow characteristics and enhances heat transfer. Through visualization and quantitative investigation, it is found that the magnetic field influences the flow patterns and velocity profiles, improving fluid mixing and vorticity magnitude.
Article
Engineering, Chemical
Lei Gao, Bingbing Wei, Xiaochuan Hu, Zaifeng Yao, Yiwen Fang, Xuejian Gao
Summary: In this study, a numerical model of sand triaxial test was established using discrete element software PFC3D, and an indoor triaxial test was conducted to calibrate the numerical model. The influence of microscopic parameters on the macroscopic mechanical response of sand was analyzed. The results showed that the friction coefficient had the greatest impact on the peak strength and residual strength of the sand's stress-strain curve, and it was positively correlated. The normal tangential stiffness ratio was negatively correlated, while the porosity and boundary flexibility stiffness had minimal influence on it.
Article
Engineering, Chemical
Xuan Liu, Jie Gong, Kai Jiang, Xiaojuan Lai, Yu Tian, Kang Zhang
Summary: This study aimed to improve the performance of lignite coal water slurries (CWSs) by synthesizing a series of three-arm amphiphilic block copolymers. By controlling the relative molecular weight, hydrophilic/hydrophobic ratio, and ionic group content, the apparent viscosity of CWSs was significantly reduced and the static stability was improved. Thermogravimetric testing and XPS analysis were conducted to reveal the mechanism behind the improved performance.
Article
Engineering, Chemical
Lanka Dinushke Weerasiri, Daniel Fabijanic, Subrat Das
Summary: Fluidization at low pressure offers significant benefits for the fine chemical industry. This study investigates the behavior of bubbles and bed expansion under low pressure conditions. It is found that lower pressure leads to larger bubbles, increased bubble quantity, and higher aspect ratio. The predictability is affected by the inhomogeneous fluidization, but low pressure fluidization can generate similar bubble sizes with lower fluidizing mass compared to atmospheric pressure.
