Article
Construction & Building Technology
Luis A. Vergara, Juan F. Perez, Henry A. Colorado
Summary: This research aims to incorporate biochar powder from wood biomass gasification into 3D printing using a circular economy approach, specifically the direct ink writing technique. The importance of this investigation lies in the sustainable option it provides by utilizing a large-scale waste, biochar, in fabrication. By developing four formulations, one was found suitable for 3D printing based on its stability, shape preservation, and surface finishing. Compression tests were conducted on cylindrical samples to evaluate strength and additional shapes were built to assess method limitations. The microstructure of the formulations was evaluated using X-ray diffraction and scanning electron microscopy, and Weibull statistics were included to analyze compression results variability.
CASE STUDIES IN CONSTRUCTION MATERIALS
(2023)
Article
Construction & Building Technology
Marcelo Tramontin Souza, Igor Maia Ferreira, Elisangela Guzi de Moraes, Luciano Senff, Sabrina Arcaro, Jose Renato Castro Pessoa, Manuel J. Ribeiro, Antonio Pedro Novaes de Oliveira
Summary: Printable concretes require specific rheological properties that can be improved with chemical additives, but interactions between different additives in co-assembly can affect their effectiveness.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Jiabin Xu, Mingxu Chen, Zhihui Zhao, Laibo Li, Shoude Wang, Yongbo Huang, Piqi Zhao, Chenchen Gong, Lingchao Lu, Xin Cheng
Summary: By adding different admixtures to modify 3D printed white Portland cement-based materials (WPCMs), this study found that hydroxypropyl methylcellulose (HPMC) and ethylene-vinyl acetate (EVA) can significantly improve their static yield stress, while calcium formate (CF) dosage of 0-1% can have the opposite effect, and increasing the content of HPMC can establish a good printed structure. Response surface methodology (RSM) was used to investigate the properties of WPCMs with hybrid admixtures, and the optimal dosage of hybrid admixtures was determined to achieve controllable rheology and stable printed structure.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Thermodynamics
Kalina Grabowska, Marcin Koniorczyk
Summary: The study investigated the impact of three different organosilicon compounds on Portland cement hydration, finding that these compounds, except one, can reduce the rate and amount of heat release during hydration process and significantly delay the hydration reaction. The effects of various organosilicon admixtures on the activation energy were found to be different.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Environmental Sciences
Daisuke Kurokawa, Ayuka Nakaguchi, Yoko Hirano, Tatsuo Iida, Taiichiro Mori, Kazuki Matsuzawa, Etsuo Sakai
Summary: This study shows that increasing the aluminate phase content in clinker and using mineral admixtures can lead to an increase in waste utilization and a reduction in CO2 emissions in the Japanese cement industry. Based on the estimates, it is projected that these measures can significantly reduce CO2 emissions and increase waste utilization in the coming years.
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
(2021)
Article
Construction & Building Technology
Luca Montanari, Michelle Helsel, Igor de la Varga, Robert Spragg, Maria Juenger
Summary: Electrical resistivity is a reliable tool for evaluating the transport properties of concrete. The influence of accelerating admixtures on the electrical properties of concrete decreases over time. Electrical resistivity and formation factor are highly correlated with the porosity of concrete systems with and without accelerating admixtures.
CEMENT & CONCRETE COMPOSITES
(2022)
Article
Construction & Building Technology
Inka Mai, Dirk Lowke, Arnaud Perrot
Summary: This research focuses on the fluid intrusion behavior in powder beds as a key factor for additive manufacturing in the construction industry. An analytical approach considering particle-bed properties and particle-fluid interaction is developed to model time-dependent fluid intrusion.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Josef Brousek, Tomas Petr, Radomir Mendricky
Summary: This paper analyzes the displacement of a large robotic arm using the non-contact optical photogrammetry method. The results show that photogrammetry and mechanical deflection meter measurements are highly consistent and meet the strict requirements for displacement measurement of robotic arms in 3D printing of cement mortar.
Article
Chemistry, Physical
Guangxiang Ji, Hafiz Asad Ali, Keke Sun, Dongxing Xuan, Xiaoqin Peng, Jingjun Li
Summary: Blending OPC with CSA cement can adjust the properties of cement for specific applications. In this study, CSA cement was used as a shrinkage-compensating admixture to improve the hydration behavior and performance of OPC. The experimental results showed that incorporating CSA cement delayed the hydration process of C3S, shortened the induction periods of the blended cement, and improved the early compressive strength and drying shrinkage of the OPC.
Article
Chemistry, Physical
Daniel Pietras, Wojciech Zbyszynski, Tomasz Sadowski
Summary: In this paper, a novel 3D printing cement-based composite material with natural, granulated cork and additional reinforcement using a continuous polyethylene interlayer net combined with polypropylene fibre reinforcement was proposed. The assessment of different physical and mechanical properties of the materials verified the applicability of the new composite. The use of polymer net as a continuous reinforcement decreased compressive toughness but reduced slumping and elephant's foot effects, while adding residual strength to the composite material.
Article
Construction & Building Technology
W. Cary Hill, Daniel W. Seitz, Matthew S. Hull, Mark L. Ballentine, Alan J. Kennedy
Summary: Thorough investigation and characterization of polymer feedstocks used in 3D printers are crucial as these devices become more common. This study provides unique insights into the effects of different additives on particulate emissions and reveals the potential health implications of agglomeration behavior.
Article
Polymer Science
Simona Russo Spena, Nino Grizzuti, Daniele Tammaro
Summary: Additive manufacturing, especially 3D printing, has revolutionized engineering design and manufacturing by allowing the creation of complex structures. This study focuses on the additive manufacturing of physical hydrogels using a modified desktop 3D printer. The thermal and rheological properties of the hydrogel are optimized to ensure successful printing. Rheological measurements and comparisons with the printing quality under different thermal conditions provide insights for the assessment and optimization of printing conditions.
Article
Green & Sustainable Science & Technology
Shuqing Yang, Chi Sun Poon, Hongzhi Cui
Summary: In this study, the effectiveness of lightweight aggregates in mitigating alkali-silica reaction (ASR) behaviors in alkali-activated slag cement (AAC) systems was explored. Alkali-reactive expanded perlite and non-alkali-reactive expanded shale were used as lightweight aggregates to compare the ASR behaviors in ordinary Portland cement (OPC) and AAC systems. The results showed that replacing expanded perlite with expanded shale effectively mitigated the ASR expansion in the AAC system.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Construction & Building Technology
Jinqing Jia, Yimu Wang
Summary: The interaction effects of four chlorine-free admixtures on the compressive strength development of Portland cement mortars were investigated. The addition of calcium formate and sodium sulfate significantly contributed to the strength of cement mortars at early curing age, but their interaction hindered their positive effect at 1 d. Triethanolamine had a negative effect on the strength of cement at 3 d, but its positive interaction with calcium formate offset this effect if the dosage of calcium formate exceeded 2%. In addition, triethanolamine had a positive influence on 7 d strength until a turning point was reached and the optimum dosage was approximately 0.013%.
Article
Chemistry, Physical
Wiktor Szewczenko, Galyna Kotsay
Summary: The concept of introducing powdered materials with alkaline activity into cement compositions has been proposed, and the use of waste glass as an active additive to Portland cement has been evaluated. Replacing a portion of Portland cement with glass waste can maintain the alkaline activity of the cement composition at a level that meets standard requirements. The effects of mixed alkali in Portland cement in the presence of glass waste were described, showing a reduction in potassium alkaline activity when glass waste is introduced into cement compositions.
Article
Computer Science, Interdisciplinary Applications
Mostafa Jalal, Zachary Grasley, Charles Gurganus, Jeffrey W. Bullard
Summary: This paper proposes a nonlinear formulation approach using an artificial neural network (ANN) for predicting the behavior of rubberized cement composite. Experimental data was collected and analyzed to build an optimum ANN model, which showed robustness in predicting the complex behavior of the composite material.
ENGINEERING WITH COMPUTERS
(2022)
Article
Physics, Applied
Md Syam Hasan, Konstantin Sobolev, Michael Nosonovsky
Summary: Airborne and deposited water microdroplets can carry viruses, with the evaporation process influenced by mechanisms like diffusion and the Kelvin effect. Factors like temperature and humidity are important for airborne water microdroplets, while wetting and porosity play key roles for deposited droplets on solid surfaces. Highly porous tile surfaces can exhibit significantly faster evaporation rates compared to nonporous surfaces.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Engineering, Environmental
Jeffrey W. Bullard, Qingxu Jin, Kenneth A. Snyder
Summary: This paper demonstrates the instantaneous change in surface area of granular medium during dissolution, which can be negative even before the smallest particles dissolve. The concept is validated through experiments with gypsum powder.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Construction & Building Technology
Scott Z. Jones, Julie B. Hipp, Andrew J. Allen, Cedric V. Gagnon
Summary: Dielectric RheoSANS measurements were used to investigate the microstructure changes of hydrating triclinic and monoclinic tricalcium silicate pastes. The results showed that the growth rate of calcium silicate hydrate (C-S-H) was higher in the monoclinic tricalcium silicate phase compared to the triclinic phase.
CEMENT AND CONCRETE RESEARCH
(2022)
Editorial Material
Materials Science, Multidisciplinary
Wengui Li, Maria Konsta-Gdoutos, Xianming Shi, Konstantin Sobolev, Surendra P. Shah
FRONTIERS IN MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Hua Liu, Aparna Deshmukh, Nathan Salowitz, Jian Zhao, Konstantin Sobolev
Summary: This paper reports on the piezoresistive response of fiber-reinforced cement mortar with graphene nano-platelets. By adding a small quantity of nano-sized conductive particles of graphene, the conventional portland cement-based composite material is transformed into a semiconductive stress-sensing material. The experimental results and simulations suggest that the electrical resistivity of the graphene-cement composite material can be used for structural health monitoring and damage detection.
FRONTIERS IN MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Konstantin Sobolev, Rani Pradoto, Ismael Flores-Vivian, Marina Kozhukhova, Irina Zhernovskaya
Summary: Blended cement performance can be improved by mechano-chemically activating fly ash, resulting in enhanced early strength of mortars and the possibility of replacing portland cement with industrial by-products.
Retraction
Computer Science, Interdisciplinary Applications
Mostafa Jalal, Zachary Grasley, Charles Gurganus, Jeffrey W. Bullard
ENGINEERING WITH COMPUTERS
(2023)
Article
Construction & Building Technology
Chen Liang, Piqi Zhao, Lu Liu, Shuo Wang, Shoude Wang, Konstantin Sobolev, Lingchao Lu
Summary: The study successfully developed a hydrophobic emulsion for cement-based materials, which significantly improves the durability and exhibits water repellent properties and corrosion resistance.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Shaoxiong Ye, Pan Feng, Jinyuan Lu, Lixiao Zhao, Qi Liu, Qi Zhang, Jiaping Liu, Jeffrey W. Bullard
Summary: In this study, the solubility product of cubic tricalcium aluminate (C(3)A) as a function of temperature between 10°C and 40°C was measured for the first time. The measurements were used to estimate the functional dependence of the standard Gibbs energy of dissolution on temperature, which can be applied in refining thermodynamic models of cementitious materials and related simulation approaches for predicting concrete binder microstructure development.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Multidisciplinary Sciences
Filip Zemajtis, Abul Borkot Md Rafiqul Hasan, Okan Yetik, Pavel Trtik, Krishna M. Pillai, Konstantin Sobolev
Summary: This paper reports on the transformation of TiO2 nanoparticles doped zinc phosphate coating systems from superhydrophilic to superhydrophobic with the application of a hydrophobic agent. The effectiveness of the coatings was evaluated using high-resolution neutron imaging, SEM, CLSM, and XRD techniques, and the water ingress mechanisms of different coating specimens were revealed. The research results showed that a two-layer superhydrophobic system could create effective water barriers with a contact angle of 152° and remained effective even after surface damage.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Ceramics
Abul Borkot Md Rafiqul Hasan, Krishna M. Pillai, Filip Zemajtis, Konstantin Sobolev
Summary: This study models the spontaneous imbibition of water into ceramic tile using the Richards equation and validates the simulation results through experiments and analytical solutions. It provides insights into moisture migration in porous ceramic materials.
CERAMICS INTERNATIONAL
(2023)
Article
Polymer Science
Hajar Taheri-Afarani, Eugene Mamontov, William R. Carroll, Joseph J. Biernacki
Summary: This research investigates the connection between the physical and chemical characteristics of polymer hydrogels and their printability as printing aids in cement-based pastes. The study reveals that higher viscosity gels exhibit higher elastic properties, accompanied by a larger radius of gyration and higher hydrogen bond probability.
Proceedings Paper
Construction & Building Technology
Clayton Cloutier, Behrouz Farahi, Konstantin Sobolev, Ahmed Faheem, Steven Kosmtaka
Summary: The study found that incorporating reactive powders in warm mix asphalt mixtures can improve the fatigue and thermal cracking resistance of the mixture, while the workability and moisture resistance are comparable to control mixtures.
AIRFIELD AND HIGHWAY PAVEMENTS 2021: PAVEMENT MATERIALS AND SUSTAINABILITY
(2021)
Proceedings Paper
Construction & Building Technology
Behrouz Farahi, Clayton Cloutier, Konstantin Sobolev, Ahmed Faheem, Steven Kosmtaka, Maysam Rezaee, Carlton Travis
Summary: This study investigated the interactions and compatibility of different types of cement with bitumen binders to evaluate the rheological performance of warm mix hybrid mastic systems. The results indicated that using cement powders at certain filler volume concentrations can enhance high-temperature response. According to Superpave specifications, the performance of cement-based mastics with 5% replacement of cement at low temperatures was acceptable.
AIRFIELD AND HIGHWAY PAVEMENTS 2021: PAVEMENT MATERIALS AND SUSTAINABILITY
(2021)
Article
Materials Science, Ceramics
Zilong Xiong, Wenzhuo Xue, Mujun Li, Feihu Tan, Yupeng Chen, Hongyu Yu
Summary: In this study, CBS glass/Al2O3 composites were developed for LTCC applications based on a CaO-B2O3-SiO2 (CBS) glass system with a high boron content. The study revealed that the softening of glass and interfacial reaction between the glass and Al2O3 were the two most important factors affecting LTCC's densification process. Real-time shrinkage rate of LTCC during sintering was successfully simulated, and it was proven that the formation of the CaAl2(BO3)O phase played a significant role in reducing glass viscosity and promoting dense structure formation. The resulting LTCC composite exhibited excellent performance for high-frequency applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Saurabh Kumar Sharma, Vinita Grover, Rakesh Shukla, Abid Hussain, Ambuj Mishra, Pawan Kumar Kulriya
Summary: In this study, the disordering caused by swift heavy ion irradiation in two different compositions of pyrochlore structures was investigated. X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy were used to analyze the samples before and after irradiation. It was found that both compositions underwent amorphization due to irradiation, with a slower rate observed in Nd1.8Zr2.2O7.1. The irradiation-induced modified track region in Nd1.8Zr2.2O7.1 consisted of defect-rich pyrochlore structure, anion-deficient fluorite structure, and amorphous domains.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jiabei He, Mengshan Song, Ming Yang, Miaomiao Zhu
Summary: This study investigates the influence of ion irradiation on high-entropy ceramics and finds that irradiation-induced lattice rearrangement can improve the radiation resistance of these ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yajie Yu, Shi He, Zhengang Zhang, Haihua Chen, Peipeng Jin, Binnian Zhong, Linhui Zhang, Liping Wang, Cheng Lu
Summary: Silicide ceramics, including tantalum disilicide (TaSi2), are known for their exceptional physical properties but are limited in practical applications due to their inherent brittleness at room temperature. In this study, we successfully improved the mechanical properties of TaSi2 ceramics and increased their electrical conductivity by modifying the preparation methods and sintering conditions. These findings provide valuable insights for future applications of TaSi2 and the design of advanced ceramic materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Jian Li, Jia Liu, Yongcui Zhang, Wei Sun, Yang Wang, Haitao Wu, Ling Li, Chuanbing Cheng, Yingying Wang, Ke Tan, Futian Liu
Summary: Microstructure design plays a crucial role in regulating the microwave dielectric properties of materials, however, the understanding of frequency temperature stability and related micromechanism remains limited. In this study, a combination of first-principles calculations and experimental observation was used to investigate the correlation among sintering behavior, crystal structure, bonding nature, and microwave dielectric properties of LnPO(4) (Ln = Eu, Pr) ceramics. The research findings systematically clarify the optimized effect and micromechanism of lanthanides on the dielectric properties of monazite ceramics, providing insights into the design and enhancement of microwave dielectric materials.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Wenqian Pan, Xizhen Xia, Wei Zhou, Yang Li
Summary: The study investigates the frictional and wear behaviors of carbon fiber-reinforced SiC ceramic matrix composites with different fiber orientations mating with ceramic balls. The results show that fiber orientation significantly affects the friction and wear properties of the composites. Pads with randomly arranged fibers demonstrate better friction stability and lower wear volume, potentially suitable for bearing material applications. The research also explores the factors influencing the formation of continuous tribo-film and identifies abrasive wear and oxidation wear as the dominant wear mechanisms for the friction pairs.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Sergey Nikolaevich Perevislov, Ilya Evgenievich Arlashkin, Valentina Leonidovna Stolyarova
Summary: This paper describes the synthesis and sintering of MAX phases in the Zr-Al-C system. Different mixtures of initial Zr/Al/C and Zr/Al/ZrC powders were used to synthesize Zr2AlC and Zr3AlC2 MAX phases. The highest content of Zr3AlC2 MAX phase was obtained using a component ratio of 1:1.5:2-51.1 vol.% of Zr/Al/ZrC powders.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Weijia Luo, Xubin Wang, Baiheng Bai, Jianli Qiao, Xingcong Chen, Yongzheng Wen, Jingbo Sun, Lingxia Li, Ji Zhou
Summary: This study successfully establishes the relationship between internal strain and dielectric loss by synthesizing and designing specific structure of tungsten bronze ceramics, and concludes that controlling internal strain can effectively reduce dielectric loss. This research is of great significance for the development of future all-ceramic non-Hermitian devices.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Santanu Mondal, Juan Diego Shiraishi Lombard, Sreenivasulu Gollapudi, Carolina Tallon, Jie-Fang Li, Dwight Viehland
Summary: Ultrafast high-temperature sintering (UHS) is an effective method for rapidly densifying ZrB2 powders. The final grain size increases with longer sintering duration. X-ray diffraction and energy-dispersive spectroscopy show crystalline phase and compositional uniformity in ZrB2 after UHS.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
JiaNan Wang, ZhiQiang Li, YongZheng Zhu, Yao Liang, Yan Cui, HuaLong Tao, Bo Song, Alexander Nikiforov, ZhiHua Zhang
Summary: First-principles calculations were performed to investigate the crystal structure, electronic structure, and ion diffusion of sulfur-doped Li2FeSiO4. The results showed that sulfur doping can improve the electronic conductivity and reduce the energy barrier for ion diffusion.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Xiaodi Dai, Serdar Aydin, Mert Yuecel Yardimci, Gunter Reekmans, Peter Adriaensens, Geert De Schutter
Summary: This study investigates the rheological behavior, solidification process, and nanostructure changes of sodium hydroxide-activated slag (NH-AAS) and sodium silicate-activated slag (SS-AAS) pastes over time. The results show that NH-AAS and SS-AAS release similar heat and reach a similar reaction degree at their initial setting times, but have different gel structures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yanliang Ji, Simon Becker, Zichen Lu, Alexander Mezhov, Regine von Klitzing, Schmidt Wolfram, Dietmar Stephan
Summary: This study reveals the significant influence of resting time on the rheological properties of cement suspensions, which is closely related to non-absorbed polycarboxylate superplasticizers (PCEs) size variation. Adsorbed PCE during resting tends to bridge particles instead of dispersing them, leading to an increased yield stress.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Yifeng Huang, Xin Wang, Yinchang Ma, Xiang Lv, Jiagang Wu
Summary: This study investigates the effect of K/Na ratio on the phase structure, ferroelectric domains, and piezoelectric properties of potassium sodium niobate (KNN)-based ceramics. It reveals that high Na+ content leads to large ferroelectric domains, while high K+ content results in local polarity heterogeneity and distinct dielectric relaxational behavior. The balanced local polarity and stress heterogeneities contribute to improved piezoelectricity.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Zun Xia, Yedong Rong, Hao Li, Ye Dong, Hongbo Yu, Jie Xu, Xiuhui Wang, Jinlong Yang
Summary: This study presents the synthesis of hollow MgAl2O4 particles in situ within porous ceramics, resulting in volume expansion and the formation of a hierarchical pore structure, leading to a significant improvement in compressive strength.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Materials Science, Ceramics
Honglong Wang, Zhiguo Sun, Faming Xia, Chenguang Yang, Xiaoguang Wang, Jintang Li, Linxu Jiang
Summary: In this study, the micro-geometry morphology variation and microstructural transformation mechanism of muscovite crystals under electron beam irradiation were explored. The results revealed the instability of the muscovite lattice under irradiation, as well as the expansion and shrinkage of the lattice with increasing dose. The study also identified changes in chemical structure and other mechanisms involved. These findings are significant for the design of radiation-resistant silicate materials and the manufacturing of electronic components used in the aerospace industry.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)