Article
Construction & Building Technology
David W. Gardner, Jiaqi Li, Martin Kunz, Chenhui Zhu, Paulo J. M. Monteiro, Roya Maboudian, Carlo Carraro
Summary: The plastic deformation of C-(A-)S-H is relevant for Portland cement creep, with the strain in Si-O bonds not increasing when the material's silicate chains are cross-linked, and the silicate chains potentially being broken up when they are not cross-linked.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Materials Science, Ceramics
Panod Viseshchitra, Peter Ercius, Paulo J. M. Monteiro, Mary Scott, Daniela Ushizima, Jiaqi Li, Ke Xu, Hans-Rudolf Wenk
Summary: This study investigates the three-dimensional structure of C-S-H with Ca/Si ratios of 1.0 and 1.6 using electron tomography, revealing that both materials have foil-like structures but differ in density and porosity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Construction & Building Technology
Andreas Picker, Luc Nicoleau, Andre Nonat, Christophe Labbez, Helmut Coelfen
Summary: This work investigates the ongoing processes in the pre- and post-nucleation stage of C-S-H precipitation at pH 12 and pH 13. The presence of calcium induces the condensation of smaller silicate species to larger oligomers during the pre-nucleation stage. By utilizing titration in combination with ion-selective electrodes, the effects of additives on the formation of C-S-H can be monitored and quantified in terms of calcium binding, nucleation times, supersaturation, and post-nucleation behavior, revealing distinct differences between different types of polymers.
CEMENT AND CONCRETE RESEARCH
(2023)
Review
Mathematics, Interdisciplinary Applications
Shengwen Tang, Yang Wang, Zhicheng Geng, Xiaofei Xu, Wenzhi Yu, A. Hubao, Jingtao Chen
Summary: Cement-based materials rely heavily on the hydration product C-S-H gels for their mechanical properties and durability, making it crucial to study the preparation methods, microstructure, and mechanical properties of C-S-H. This review also delves into the durability aspects of C-S-H, such as carbonization and chloride/sulfate attacks.
FRACTAL AND FRACTIONAL
(2021)
Article
Chemistry, Multidisciplinary
Samba Ndiaye, Alexander Pisch, Alpha Ousmane Toure, Severine Camy, Samba Mody Sow, Adrien Chen, Falilou Mbacke Sambe, Laurent Prat, Laurent Cassayre
Summary: This study investigates the carbonation reaction of calcium silicate hydrates synthesized by an aqueous process, finding that their carbonation degree is much higher than that of natural wollastonite, which could make them an important secondary raw material for low-temperature hardening building materials.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(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
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
Construction & Building Technology
Yangyang Zhang, Qingxin Zhao, Zhanming Gao, Jun Chang
Summary: The influence of hydration temperature on the nanostructure of the AH3 phase formed in calcium sulfoaluminate cements was investigated in this study. Different crystal structures were observed for AH3 phases formed by ss-ye'elimite and st-ye'elimite at varying curing temperatures. TEM/SAED analysis and FE-SEM images provided direct evidence of the nanostructure of hydration products.
CEMENT AND CONCRETE RESEARCH
(2021)
Article
Chemistry, Analytical
Anastasiya A. Blinova, Abdurasul A. Karamirzoev, Asiyat R. Guseynova, David G. Maglakelidze, Tatiana A. Ilyaeva, Batradz A. Gusov, Avetis P. Meliksetyants, Mari M. Pirumian, Maxim A. Taravanov, Maxim A. Pirogov, Dmitriy S. Vakalov, Tatiana V. Bernyukevich, Alexey A. Gvozdenko, Andrey A. Nagdalian, Andrey V. Blinov
Summary: This work presents a method for synthesizing calcium silicate nanoparticles stabilized with essential amino acids. Chemical precipitation was used to obtain CaSiO3 nanoparticles. The optimal calcium-containing precursor was determined by scanning electron microscopy, with Ca(CH3COO)(2) being identified as the best option. X-ray phase analysis revealed the presence of nanosized CaSiO3-wollastonite. The addition of amino acids did not significantly affect the morphology of the CaSiO3 samples, as observed through SEM micrographs. Computerized quantum chemical modeling suggested that CaSiO3-L-methionine configuration was the most energetically favorable. This was confirmed by IR spectroscopy.
Article
Engineering, Environmental
Xin Liu, Pan Feng, Yuxi Cai, Xiaohan Yu, Cheng Yu, Qianping Ran
Summary: In this study, the carbonation kinetics of calcium silicate hydrate (C-S-H) with varying calcium to silica ratio (Ca/Si) were investigated. The results showed three distinct periods in the carbonation process and quantitatively characterized the evolution of carbonation products. The findings not only enhance our understanding of the deterioration of cementitious materials under carbonation, but also provide new insights into CO2 capture using C-S-H.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Ceramics
Sha Li, Xianhui Mei, Yin Zhang, Hao Xu, Jiaxi Liu, Weijing Cao, Jun Tang
Summary: Adjusting tricalcium silicate (C3S) through carbonization can improve its properties, reduce alkalinity, and give it suitable setting time and higher compressive strength, showing potential applications in bone repair.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Ceramics
Felipe Basquiroto de Souza, Kwesi Sagoe-Crentsil, Wenhui Duan
Summary: This study utilized Debye function analysis to investigate the atomic and nanoscale structural-disorder features of calcium silicate hydrate (C-S-H), revealing that random layer rotations are a critical feature in C-S-H phases. The findings not only contribute to the construction of more accurate nanoscale models of hydrated cement, but also have potential wider application to similar complex layered structures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Ceramics
Sumin Im, Hyeonseok Jee, Heongwon Suh, Manabu Kanematsu, Satoshi Morooka, Koyama Taku, Nishio Yuhei, Akihiko Machida, Jihoon Kim, Sungchul Bae
Summary: This study investigates the effect of heating on synthesized calcium-silicate-hydrate (C-S-H) and reveals the changes in local atomic arrangements and mechanical properties during different transformation stages. The results demonstrate the transformation of C-S-H from a hydrated phase to a crystalline phase under high temperature exposure, providing experimental evidence of microstructural and nanostructural deformation behavior.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Hongwei Zhu, Mai Zhang, Fubing Zou, Fazhou Wang, Chuanlin Hu
Summary: This study investigates the effect of magnesium ion doping on C-S-H/PCE nanocomposites. The results show that appropriate magnesium ions can improve the stability of the nanocomposites and enhance their accelerating effect on early cement hydration. The magnesium ions displace calcium ions and promote the absorption of PCE. Additionally, the incorporation of magnesium ions leads to the formation of two unique morphologies of nanocomposites.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Agricultural Engineering
Tsuyoshi Aketo, Kentaro Waga, Yusuke Yabu, Yoshiaki Maeda, Tomoko Yoshino, Akiko Hanada, Koki Sano, Takashi Kamiya, Hiroyuki Takano, Tsuyoshi Tanaka
Summary: The recycling of phosphorus recovered from wastewater for microalgal cultivation using aCSH has been successfully demonstrated in this study, showing high phosphorous recovery rates and comparable biomass and carbohydrate productivity with conventional media. This process offers a potential solution to the phosphorus supply crisis and contributes to a sustainable society.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Physical
Guy O. Ngongang Ndjawa, Kenneth R. Graham, Ruipeng Li, Sarah M. Conron, Patrick Erwin, Kang Wei Chou, George F. Burkhard, Kui Zhao, Eric T. Hoke, Mark E. Thompson, Michael D. McGehee, Aram Amassian
CHEMISTRY OF MATERIALS
(2015)
Article
Nanoscience & Nanotechnology
J. Ha, S. Chae, K. W. Chou, T. Tyliszczak, P. J. M. Monteiro
JOURNAL OF NANOMATERIALS
(2016)
Article
Chemistry, Multidisciplinary
Kang Wei Chou, Buyi Yan, Ruipeng Li, Er Qiang Li, Kui Zhao, Dalaver H. Anjum, Steven Alvarez, Robert Gassaway, Alan Biocca, Sigurdur T. Thoroddsen, Alexander Hexemer, Aram Amassian
ADVANCED MATERIALS
(2013)
Article
Chemistry, Multidisciplinary
Khabiboulakh Katsiev, Alexander H. Ip, Armin Fischer, Iori Tanabe, Xin Zhang, Ahmad R. Kirmani, Oleksandr Voznyy, Lisa R. Rollny, Kang Wei Chou, Susanna M. Thon, Graham H. Carey, Xiaoyu Cui, Aram Amassian, Peter Dowben, Edward H. Sargent, Osman M. Bakr
ADVANCED MATERIALS
(2014)
Article
Chemistry, Multidisciplinary
Louis A. Perez, Kang Wei Chou, John A. Love, Thomas S. van der Poll, Detlef-M. Smilgies, Thuc-Quyen Nguyen, Edward J. Kramer, Aram Amassian, Guillermo C. Bazan
ADVANCED MATERIALS
(2013)
Article
Chemistry, Multidisciplinary
Illan J. Kramer, James C. Minor, Gabriel Moreno-Bautista, Lisa Rollny, Pongsakorn Kanjanaboos, Damir Kopilovic, Susanna M. Thon, Graham H. Carey, Kang Wei Chou, David Zhitomirsky, Aram Amassian, Edward H. Sargent
ADVANCED MATERIALS
(2015)
Article
Chemistry, Multidisciplinary
Mingjian Yuan, Kyle W. Kemp, Susanna M. Thon, Jin Young Kim, Kang Wei Chou, Aram Amassian, Edward H. Sargent
ADVANCED MATERIALS
(2014)
Article
Chemistry, Multidisciplinary
Pichaya Pattanasattayavong, Guy Olivier Ngongang Ndjawa, Kui Zhao, Kang Wei Chou, Nir Yaacobi-Gross, Brian C. O'Regan, Aram Amassian, Thomas D. Anthopoulos
CHEMICAL COMMUNICATIONS
(2013)
Article
Chemistry, Multidisciplinary
Catherine Kanimozhi, Nir Yaacobi-Gross, Kang Wei Chou, Aram Amassian, Thomas D. Anthopoulos, Satish Patil
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2012)
Article
Materials Science, Multidisciplinary
Detlef-M Smilgies, Ruipeng Li, Gaurav Giri, Kang Wei Chou, Ying Diao, Zhenan Bao, Aram Amassian
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2013)
Article
Chemistry, Physical
Lee J. Richter, Dean M. DeLongchamp, Felicia A. Bokel, Sebastian Engmann, Kang Wei Chou, Aram Amassian, Eric Schaible, Alexander Hexemer
ADVANCED ENERGY MATERIALS
(2015)
Article
Materials Science, Multidisciplinary
Graham H. Carey, Kang W. Chou, Buyi Yan, Ahmad R. Kirmani, Aram Amassian, Edward H. Sargent
MRS COMMUNICATIONS
(2013)
Article
Materials Science, Multidisciplinary
Kang Wei Chou, Hadayat Ullah Khan, Muhammad R. Niazi, Buyi Yan, Ruipeng Li, Marcia M. Payne, John E. Anthony, Detlef-M. Smilgies, Aram Amassian
JOURNAL OF MATERIALS CHEMISTRY C
(2014)
Article
Materials Science, Multidisciplinary
Maged Abdelsamie, Kui Zhao, Muhammad R. Niazi, Kang W. Chou, Aram Amassian
JOURNAL OF MATERIALS CHEMISTRY C
(2014)