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Articles 991 - 1020 of 50072
Full-Text Articles in Entire DC Network
Durability Of Reinforced Concrete Exposed To Stray Currents From Dc-Driven Track Systems Under Constant And Varying Voltages, Lapiro Igor, Eid Rami, Konstantin Kovler
Durability Of Reinforced Concrete Exposed To Stray Currents From Dc-Driven Track Systems Under Constant And Varying Voltages, Lapiro Igor, Eid Rami, Konstantin Kovler
C3 Symposium 2025
Real-world conditions near a light rail system were simulated to examine the effect of stray electric currents on the corrosion of reinforced concrete and the service life of these elements. Field measurements were conducted near the track to estimate typical stray electric voltages. These voltages were then applied to concrete specimens in a controlled laboratory environment under two different conditions: variable voltage, as measured in the field, and with a constant voltage of 9 V. Two types of concrete were tested: normal-strength concrete (approximately 30 MPa) and medium-strength concrete (approximately 60 MPa). Crack times were recorded for both to assess …
Development Of Ternary Blended Cement Incorporating Limestone And Natural Pozzolan For Enhanced Durability And Sustainability, Azadeh Hosseinpanahi, Luis Baquerizo Ibarra, Hamed Maraghechi
Development Of Ternary Blended Cement Incorporating Limestone And Natural Pozzolan For Enhanced Durability And Sustainability, Azadeh Hosseinpanahi, Luis Baquerizo Ibarra, Hamed Maraghechi
C3 Symposium 2025
This study evaluates the commercial development of ternary blended cement with integration of a zeolite based natural pozzolan as a supplementary cementitious material (SCM). The experimental program involved a systematic characterization of the natural pozzolan, as well as assessment of fresh, mechanical and durability properties of the ternary blended cement to ascertain short-term and long-term performances.
A Thermodynamic Perspective On Reinforcement Corrosion In Concretes Produced With Low-Clinker Blended Binders, O. Burkan Isgor, W. Jason Weiss
A Thermodynamic Perspective On Reinforcement Corrosion In Concretes Produced With Low-Clinker Blended Binders, O. Burkan Isgor, W. Jason Weiss
C3 Symposium 2025
Concrete produced with blended binders with low clinker content, while having a reduced carbon footprint, pose additional challenges with respect to reinforcement corrosion. As the portland limestone cement is replacing ordinary portland cement, the utilization of conventional supplementary cementitious materials (SCM) has become the norm, and various types of alternative SCM are emerging, the focus has shifted toward the performance of concretes produced with low-clinker blended binders. While the synergetic reactions among clinker, limestone and SCM could provide significant benefits to concrete by reducing porosity, pore connectivity and transport coefficients, hence improving various mechanical and durability properties, they can also …
Predicting The Chloride Penetration Of Sustainable Marine Concrete Using Data-Driven And Multiphysics Frameworks, Joya Rani Das, Taihao Han, Jie Huang, Kamal H. Khayat, Aditya Kumar
Predicting The Chloride Penetration Of Sustainable Marine Concrete Using Data-Driven And Multiphysics Frameworks, Joya Rani Das, Taihao Han, Jie Huang, Kamal H. Khayat, Aditya Kumar
C3 Symposium 2025
Chloride penetration in sustainable reinforced concrete (RC) is a critical parameter for predicting and preventing infrastructure failure, particularly for marine applications. However, replicating natural environments and testing in actual infrastructure is challenging, making it difficult to accurately measure chloride concentration in RC. Additionally, the complexity of concrete mixture designs and environmental parameters hinders the development of a universal model to predict chloride concentration at various concrete depths. This study develops a data-driven approach to predict chloride concentrations at different depths and chloride diffusion coefficients in marine RC made with common supplementary cementitious materials (e.g. fly ash, slag, etc.) under varied …
The Role Of Graphene-Based Nanomaterials In Enhancing Resiliency And Ductility In Engineered Concrete, Michail Margas, Panagiotis Danoglidis, Maria Konsta-Gdoutos
The Role Of Graphene-Based Nanomaterials In Enhancing Resiliency And Ductility In Engineered Concrete, Michail Margas, Panagiotis Danoglidis, Maria Konsta-Gdoutos
C3 Symposium 2025
Graphene-based nanomaterials have gained significant attention for enhancing cement matrices due to their exceptional surface area and remarkable mechanical, physical, and chemical properties. These characteristics make them ideal candidates for improving the overall performance of engineered cementitious materials. This study focuses on accelerating the carbonation kinetics within nanostructured interfaces of cement systems by incorporating 2D graphene-based nanomaterials. Exfoliated graphene nanoplatelets (GNPs), with a surface area 3-5 times greater than that of cement grains, were used. Experimental results revealed that concrete reinforced with exfoliated, few-layer GNPs demonstrated 1.5 times higher carbonation uptake and mineralization capacity. Additionally, quantitative nanomechanical property mapping highlighted …
Optimizing Thermoelectric Efficiency In Cementitious Nanocomposites Via Hybrid Swcnt/Ncf Reinforcement, Myrsini E. Maglogianni, Panagiotis A. Danoglidis, Maria S. Konsta-Gdoutos
Optimizing Thermoelectric Efficiency In Cementitious Nanocomposites Via Hybrid Swcnt/Ncf Reinforcement, Myrsini E. Maglogianni, Panagiotis A. Danoglidis, Maria S. Konsta-Gdoutos
C3 Symposium 2025
Cement-based materials with thermoelectric functionalities offer new opportunities for harvesting waste heat from civil infrastructure. While carbon nanomaterials have been shown to enhance the electrical conductivity of cementitious composites, achieving efficient thermoelectric energy conversion requires simultaneously controlling the thermal properties while preserving the electrical properties. In this study, insulating cellulose nanofibrils (NCFs) are combined with superconducting single-walled carbon nanotubes (SWCNTs) to develop nano-engineered cementitious materials capable of converting thermal gradients into electrical energy. Results show that the hybrid SWCNT/NCF mortars exhibited a Seebeck coefficient up to 4083.61 μV/K and ZT of 0.46 while maintaining high electrical conductivity of 126.42 S/m …
Harnessing Waste Cellulose Fibers For Developing Highly Resilient And Durable Cementitious Composites, Mohammad Jaberizadeh, Panagiotis Danoglidis, Surendra P. Shah, Maria Konsta-Gdoutos
Harnessing Waste Cellulose Fibers For Developing Highly Resilient And Durable Cementitious Composites, Mohammad Jaberizadeh, Panagiotis Danoglidis, Surendra P. Shah, Maria Konsta-Gdoutos
C3 Symposium 2025
The construction industry continually seeks innovative materials to improve the performance and durability of cementitious composites. Waste cellulose fibers (WCF) derived from agricultural residues present an advanced underutilized source for reinforcing cementitious materials. These fibers exhibit exceptional properties, including high tensile strength and a remarkable water retention capacity (~10x their weight). Our research on WCF derived from wheat straw demonstrates their ability to mitigate autogenous shrinkage by up to 75% during early hydration and significantly improve mechanical properties at early ages. However, the long-term performance of WCF in cementitious matrices is affected by the harsh alkaline environment, which can cause …
Enhancing The Post-Crack Tensile Strain Capacity Of Metakaolin- Portland Limestone Cement Blend By Using Carbon Nanotubes, Rohitashva K. Singh, Panagiotis A. Danoglidis, Maria S. Konsta-Gdoutos
Enhancing The Post-Crack Tensile Strain Capacity Of Metakaolin- Portland Limestone Cement Blend By Using Carbon Nanotubes, Rohitashva K. Singh, Panagiotis A. Danoglidis, Maria S. Konsta-Gdoutos
C3 Symposium 2025
Incorporating metakaolin (MK) into cementitious materials is known to enhance strength and stiffness, however, this yields a relatively brittle material with a significant loss of the ultimate strain capacity. To compensate for the loss in ductility, well-dispersed carbon nanotubes (CNTs) are incorporated in MK-Portland Limestone Cement (PLC) mortar to reinforce the Interfacial Transition Zone (ITZ) which is crucial for controlling the crack formation and propagation. Nanoscale imaging and mechanical property mapping at the ITZ between the nanomodified MK-PLC matrix and aggregates revealed that the local nanostructure and morphology of the ITZ were modified, resulting in an increase in the modulus …
Biochar-Amended Engineered Cementitious Composites, Amir Ali Shahmansouri, Zhigang Zhang, Xianming Shi
Biochar-Amended Engineered Cementitious Composites, Amir Ali Shahmansouri, Zhigang Zhang, Xianming Shi
C3 Symposium 2025
This study investigates the incorporation of biochar as a sustainable cement replacement in high-strength ECC, focusing on mechanical properties, durability, microstructural characteristics, and environmental impacts. Biochar was added at 5%, 10%, 20%, and 30% replacement levels by cement weight, and its effects were assessed through compressive and tensile strength tests, TGA, SEM, and LCA. Results showed that biochar-enhanced ECC achieved 28-day compressive strengths of 95.4–99.6 MPa, with a peak tensile strength of 8.58 MPa at 20% biochar content, though higher dosages reduced strain capacity. TGA confirmed increased pozzolanic activity with reduced portlandite content, while SEM images revealed a denser ITZ …
Towards Carbon-Neutrality In Concrete: The Role Of Biochar In Air-Entrained And Non-Air-Entrained Systems As Sand Replacement, Mahdi Mirabrishami, Farshad Rajabipour
Towards Carbon-Neutrality In Concrete: The Role Of Biochar In Air-Entrained And Non-Air-Entrained Systems As Sand Replacement, Mahdi Mirabrishami, Farshad Rajabipour
C3 Symposium 2025
Biochar is a carbon-rich solid residue resulting from the pyrolysis or devolatilization of waste biomass (e.g., wood chips, sawdust, grass) at elevated temperatures in an oxygen-limited furnace. Biochar provides an effective pathway for atmospheric CO2 removal via photosynthesis in biomass, which is subsequently converted to biochar while also producing energy. Due to its carbon-negative footprint (-2.4 to -2.9 kg CO2eq/ kg biochar), biochar could be used to reduce or eliminate the net CO2 emission of concrete. This study aims to produce low-carbon to carbon-negative concrete mixtures by utilizing biochar as a partial to total replacement of natural sand while leveraging …
Carbon-Negative Concrete By Using Biochar, Matteo Pavese, Luca Lavagna, Carlo Amata, Jean Marc Tulliani, Mattia Bartoli, Mauro Giorcelli, Claudia Guzzoni Iudice, Alessio Mondello, Matthew Mallory, Chris Carstens, Douglas Dufaux
Carbon-Negative Concrete By Using Biochar, Matteo Pavese, Luca Lavagna, Carlo Amata, Jean Marc Tulliani, Mattia Bartoli, Mauro Giorcelli, Claudia Guzzoni Iudice, Alessio Mondello, Matthew Mallory, Chris Carstens, Douglas Dufaux
C3 Symposium 2025
In this paper we present the realization of carbon negative concrete by substituting cement and aggregate with biochar. By conveniently choosing feedstock and properties of biochar, it is possible to maintain the same compression strength of standard concrete. Several biochar types derived from different vegetal feedstocks were used, that were characterized for their composition and physical properties. The effect of biochar type and grain size distribution was studied, demonstrating the possibility of maintaining or even slightly improving the mechanical properties of mortar and concrete, depending on the biochar content. The physical properties and pore distribution of mortar containing biochar was …
An Interpretable Machine Learning Technique To Predict Size Effect And Fracture Behavior Of Concrete, Md Nasir Uddin, Md Khaliqul Bari, Amlan Majumder, Picasso Kumar Debnath, Xijun Shi
An Interpretable Machine Learning Technique To Predict Size Effect And Fracture Behavior Of Concrete, Md Nasir Uddin, Md Khaliqul Bari, Amlan Majumder, Picasso Kumar Debnath, Xijun Shi
C3 Symposium 2025
The size effect phenomenon, stemming from the inherent fracture characteristics of materials, is notably widespread in concrete. Traditional approaches to investigate this effect and concrete fracture behaviors are typically laborious. To address these issues, this study employs a machine learning (ML) methodology (e.g., light gradient boosting machine (LGBoost) and categorical boosting (CatBoost)). The findings indicate that these models deliver high accuracy in predicting the nominal flexural strength of concrete, reaching R² values of 0.933 and 0.929, respectively, for testing the models. Additionally, SHapley additive exPlanations (SHAP) analysis was used to differentiate the influence of material and geometric parameters on the …
Effects Of Colloidal Nano-Silica Incorporation On The Durability And Mechanical Properties Of Portland Limestone Cement (Plc) Concrete, Jookyeung Sung, Mehrdad Razmara, Rui He, Na (Luna) Lu, Yining Feng
Effects Of Colloidal Nano-Silica Incorporation On The Durability And Mechanical Properties Of Portland Limestone Cement (Plc) Concrete, Jookyeung Sung, Mehrdad Razmara, Rui He, Na (Luna) Lu, Yining Feng
C3 Symposium 2025
Portland limestone cement (PLC) concrete is considered more environmentally friendly than ordinary Portland cement (OPC) because it contains less clicker content; however, in many cases PLC cement compromises the durability and mechanical properties of concrete. In this study, colloidal nano-silica (CNS) was used to improve the durability and mechanical properties of PLC concrete. The effects of two types of water reducers (lignin and polycarboxylate) on PLC samples were also studied. The results indicate that CNS incorporation improved the durability and mechanical properties of PLC concrete. The compressive strength of CNS samples improved by nearly 15%, the flexural strength increased by …
Real-Time Concrete Strength Estimation Using Electro-Mechanical Impedance And 1d Cnn, Rui He, Guangshuai Han, Na (Luna) Lu, Yining Feng
Real-Time Concrete Strength Estimation Using Electro-Mechanical Impedance And 1d Cnn, Rui He, Guangshuai Han, Na (Luna) Lu, Yining Feng
C3 Symposium 2025
This study presents a field-validated deep learning model for real-time, in-situ concrete strength estimation using piezoelectric sensors and electro-mechanical impedance (EMI) signal processing. Addressing the limitations of prior research—namely, narrow datasets and poor field applicability—we constructed a diverse database comprising over 775 data points across 28 mix designs and 107 sensor deployments. A novel 1D Convolutional Neural Network (1DCNN) with a baseline correction mechanism was developed to analyze time-series EMI signals. Our model achieved a mean absolute error of 2.68 MPa and an R² of 0.96 in testing, outperforming conventional methods. Transfer learning techniques further enhanced adaptability to new mix …
Rebel Sensor For Real-Time Concrete Strength: Eliminating Calibration And Reducing Carbon Footprint, Rui He, Zhihao Kong, Joe Turek, Na (Luna) Lu
Rebel Sensor For Real-Time Concrete Strength: Eliminating Calibration And Reducing Carbon Footprint, Rui He, Zhihao Kong, Joe Turek, Na (Luna) Lu
C3 Symposium 2025
Concrete strength is a key factor influencing construction quality, cost, schedule, and durability. However, current testing methods—such as cylinder and beam breaks—are time-consuming, costly, and carbon-intensive, often delaying construction and generating unnecessary waste. Existing maturity methods (e.g., ASTM C1074) also require pre-established, mix-specific curves that take weeks and thousands of dollars to develop.To address these challenges, we developed the REBEL Sensor—an IoT-enabled technology that enables direct, real-time, and wireless monitoring of in-place concrete strength without the need for pre-determined calibration curves. By accurately predicting final strength at 28 or 56 days from the initial mix, our sensor empowers engineers to …
Calcium Sulfoaluminate-Belite Cement Production Using Industrial Wastes, Bipina Thaivalappil, Piyush Chaunsali
Calcium Sulfoaluminate-Belite Cement Production Using Industrial Wastes, Bipina Thaivalappil, Piyush Chaunsali
C3 Symposium 2025
This study explores the development of calcium sulfoaluminate-belite (CSAB) cement using alternative raw materials such as low-CaO limestone and red mud, aiming to reduce cost and environmental impact. CSAB clinkers were synthesized, and the mineralogy and mechanical performance were assessed. The findings demonstrate that CSAB cement with comparable phase composition and mechanical performance to commercial variants can be achieved, supporting the feasibility of sustainable raw material utilization.
Mix Designs Of Low Modulus Of Elasticity Of Mass Concrete And Cushion Concrete Used In Yusufeli Dam Body, Aydın Saglik
Mix Designs Of Low Modulus Of Elasticity Of Mass Concrete And Cushion Concrete Used In Yusufeli Dam Body, Aydın Saglik
C3 Symposium 2025
The construction of the Yusufeli Dam and Hydroelectric Power Plant on the Coruh River has been completed and the dam, which has a total water storage volume of approximately 2,2 billion cubic meters, has become the highest dam in Turkey and the fifth highest dam in the world with a height of 275 meters in the double-curvature concrete arch dam type. During the design process of the mass concrete body of the Yusufeli Dam, relatively low deformation modulus zones were encountered in some slope rock soils where the thin arch structure would create pressure. It was taken into consideration that …
An Experimental Study On Evaluation Of Creep And Shrinkage For Blast Furnace Slag-Cementless Concrete With Compressive Strength Of 80 Mpa, Jung-Soo Lee, Chan-Kyu Park, San-Ha Park, Seung-Hee Kwon
An Experimental Study On Evaluation Of Creep And Shrinkage For Blast Furnace Slag-Cementless Concrete With Compressive Strength Of 80 Mpa, Jung-Soo Lee, Chan-Kyu Park, San-Ha Park, Seung-Hee Kwon
C3 Symposium 2025
In this study, the long-term behavior of 80 MPa cementless concrete incorporating blast furnace slag and that of ordinary concrete with the same compressive strength were evaluated. The modulus of elasticity, autogenous shrinkage, and basic creep coefficient of the cementless concrete were found to be comparable to those of ordinary concrete. In contrast, the drying creep and drying shrinkage of the cementless concrete were observed to be lower than those of ordinary concrete.
Co₂ Seeding Admixtures For Enhanced Concrete Activation, Shipeng Zhang, Guangqi Xiong, Shuangshuang Liu
Co₂ Seeding Admixtures For Enhanced Concrete Activation, Shipeng Zhang, Guangqi Xiong, Shuangshuang Liu
C3 Symposium 2025
In this study, on-site CO2 seeding admixtures were prepared using power ultrasound-assisted pre-carbonation and chelator-assisted pre-carbonation (GLTA, EDTA) to enhance the carbonation efficiency and mechanical properties. Studies have shown that the application of power ultrasound can achieve a maximum CO2 uptake of 9.0% of the binder during the preacarbontion process. Compared with those of the traditional mixing batch and ordinary carbonation seeding activated batch, the strength of the power ultrasound seeding activated batch increased by 27.2 % and 21.4 %, respectively, after 1 day. Additionally, the EDTA-assisted pre-carbonation can achieve a maximum CO2 uptake of 9.6% of the binder during …
Cold-Compacted Concrete Waste Composites – Sustainable Low-Carbon Materials: Effect Of Original Concrete Quality, Ngoc Kien Bui, Takafumi Noguchi, Ippei Maruyama
Cold-Compacted Concrete Waste Composites – Sustainable Low-Carbon Materials: Effect Of Original Concrete Quality, Ngoc Kien Bui, Takafumi Noguchi, Ippei Maruyama
C3 Symposium 2025
A compacted concrete waste composite material (CWC) is developed using a cold compaction approach with recycled concrete waste particles, without the use of cement. This study aims to investigate the effects of carbonation and the original quality of the concrete waste (CW) particles on the properties of composite material, with the goal of proposing a pretreatment of concrete waste particles which proposed for CO2 sequestered for producing CWC with attained strength. This study found that the original quality of the CW strongly affects the properties of the CWC.
Using Fluid Absorption Modeling To Determine The Intrinsic Permeability Of Cement-Based Materials, Luiz Antonio De Siqueira Neto, O. Burkan Isgor, W. Jason Weiss
Using Fluid Absorption Modeling To Determine The Intrinsic Permeability Of Cement-Based Materials, Luiz Antonio De Siqueira Neto, O. Burkan Isgor, W. Jason Weiss
C3 Symposium 2025
Neutron radiography (NR) is used during unidirectional fluid absorption experiments to obtain moisture profiles through the height of mortar specimens. The moisture profiles are compared to the results of an established fluid absorption modeling technique, and linear interpolation is used to accurately determine the intrinsic permeability (Kl) of all samples.
Practical Implementation Of Internally Cured Concrete Using Superabsorbent Polymers, Chibueze Ajuonuma, Raikhan Tokpatayeva, Jan Olek, Kendra A. Erk
Practical Implementation Of Internally Cured Concrete Using Superabsorbent Polymers, Chibueze Ajuonuma, Raikhan Tokpatayeva, Jan Olek, Kendra A. Erk
C3 Symposium 2025
This study investigates the practical implementation of internally cured plain and slag cement concrete using superabsorbent polymers (SAPs) through a comprehensive field trial. The objective was to develop strategies to successfully deliver and disperse SAP in concrete, evaluate the internal curing performance of SAP in concrete mixtures containing Type IL cement, slag-cement and colloidal nanosilica and evaluate fresh properties, strength development and durability performance of SAP-modified concrete mixes in real-world applications. The incorporation of SAPs aims to enhance internal curing, reduce shrinkage, and improve the long-term performance of concrete structures. Six concrete mixtures were evaluated with Type IL cement, 30% …
Characterization Of Local 2:1 Clays For Utilization In Limestone Calcined Clay Cements, Aiswaria G R, Athira Gopinath
Characterization Of Local 2:1 Clays For Utilization In Limestone Calcined Clay Cements, Aiswaria G R, Athira Gopinath
C3 Symposium 2025
As calcined clays are gaining prominence as supplementary cementitious materials (SCM), demand for kaolinite-based 1:1 clay has surged, especially for Limestone Calcined Clay Cements (LC3). However, the potential of readily available 2:1 clay remains underexplored. Clays vary in composition, microstructure, and reactivity, with most becoming viable SCMs when activated. This study characterizes three local 2:1 clays in India against pure kaolinite to assess their suitability for LC3. Clays were characterized based on geotechnical properties, XRD and thermogravimetric analysis. Based on the TGA analysis, the dehydroxylation temperature for each clay was ascertained and calcined accordingly. The reactivity of the calcined clays …
Leveraging The Use Of Carbonated Water For Sustainable Low-Carbon Cements, Aswathy Rajendran, Sripriya Rengaraju, Abir Al-Tabbaa
Leveraging The Use Of Carbonated Water For Sustainable Low-Carbon Cements, Aswathy Rajendran, Sripriya Rengaraju, Abir Al-Tabbaa
C3 Symposium 2025
The sustainability of the construction industry has been significantly enhanced by the development and use of low-carbon cements. However, achieving net-zero emissions requires more than just reducing embodied carbon of cements; it necessitates the adoption of effective carbon sequestration methods. Although various strategies for incorporating carbon sequestration into construction materials have been explored, the use of carbonated water in low-carbon cement systems remains less-researched. This study investigates the impact of adding carbonated water to two key low-carbon cement types: Slag-based cement (80% cement replacement) and Limestone Calcined Clay Cement (LC3, 50% cement replacement). The findings show that carbonated water improves …
Characterizing Co2 In Cementitious Materials With Qxrd And Tga And Remote Fiber Optic Raman Probe, Mohammad Azimi Pour, Bohong Zhang, Jiaqi Li, Jie Huang, Hongyan Ma
Characterizing Co2 In Cementitious Materials With Qxrd And Tga And Remote Fiber Optic Raman Probe, Mohammad Azimi Pour, Bohong Zhang, Jiaqi Li, Jie Huang, Hongyan Ma
C3 Symposium 2025
The urgent need for producing sustainable cementitious materials has led to increased interest in using carbon-negative technology to enhance sustainability. In this regard, measuring the amount of CO2 is one essential issue. This study evaluated the potentials and the limitation of Thermal Gravimetric Analysis (TGA), Quantitative X-ray Diffraction (QXRD), and Optic Raman Probe in characterizing the CO2 in cementitious material with different dosages. traditional methods like TGA are accurate for measuring CO2 but need destructive or extensive sample preparation. This study proposes using a remote fiber optic Raman spectroscopy probe for non-destructive, in situ CO2 analysis in cementitious materials. Raman …
Mix Design Of Alkali Activated Concrete Having Fly Ash And Blast Furnace Slag, Rajeev Kumar Ranjan, Ananth Ramaswamy
Mix Design Of Alkali Activated Concrete Having Fly Ash And Blast Furnace Slag, Rajeev Kumar Ranjan, Ananth Ramaswamy
C3 Symposium 2025
Alkali-activated concrete (AAC) is an alternative to ordinary Portland cement concrete and has several potential benefits over normal Portland cement. This includes improved acid resistance, elevated temperature applications, resistance to weathering and reduced carbon emissions from the production of normal Portland cement. However, the field application of AAC is limited due to a lack of standard mixture proportions codes. This study focuses on developing a procedure for the mixture proportions.
Evaluation On Basic Properties And Surface Quality Of Pca Members Using Scallop Shell Sand Concrete With Blue Carbon Fixation, Nene Uesugi, Masaki Tamura, Tetsuya Sasaki, Takashi Saito, Ryota Ozeki, Taichi Yamamoto, Ayano Koseki
Evaluation On Basic Properties And Surface Quality Of Pca Members Using Scallop Shell Sand Concrete With Blue Carbon Fixation, Nene Uesugi, Masaki Tamura, Tetsuya Sasaki, Takashi Saito, Ryota Ozeki, Taichi Yamamoto, Ayano Koseki
C3 Symposium 2025
With carbon neutrality gaining importance as one of the measures against global warming, the building industry is focusing on the development of environmentally friendly building materials to help realize a sustainable society. Japan has the second longest coastline in the world, and its fisheries industry along the coast is well developed and fisheries resources are considered important. In Hokkaido in particular, approximately 400,000 tons of scallops are landed annually, with approximately 110,000 tons of shells becoming waste. In order to make effective use of these discarded and unused resources, the development of blue carbon concrete components, in which scallop shells …
Computer Vision-Driven Sorptivity Tests For Cementitious Materials, Hossein Kabir, Sunav Dahal, Nishant Garg
Computer Vision-Driven Sorptivity Tests For Cementitious Materials, Hossein Kabir, Sunav Dahal, Nishant Garg
C3 Symposium 2025
Assessing water absorption, or 'sorptivity,' in cement-based materials is a crucial method for evaluating durability. The ASTM C1585 standard provides a straightforward approach for measuring sorptivity, yet it is often labor-intensive and time-consuming. This study presents two innovative strategies to accelerate and automate sorptivity measurements through computer vision. The first method involves a droplet test, demonstrating that the initial dynamics of a water droplet's contact angle, characterized by CNNs, strongly predict the initial sorptivity of paste samples. By analyzing data from 63 different paste systems, this method estimates the 6-hour initial sorptivity in mere seconds. The second method utilizes a …
Computational Assessment Of Earthquake Resistance Of Natural Pozzolan-Based Engineered Cementitious Composite Structures, Junyi Duan, Diego Aparicio, Alvaro Paul, Chengcheng Tao, Qingxu Jin
Computational Assessment Of Earthquake Resistance Of Natural Pozzolan-Based Engineered Cementitious Composite Structures, Junyi Duan, Diego Aparicio, Alvaro Paul, Chengcheng Tao, Qingxu Jin
C3 Symposium 2025
The increasing frequency and intensity of earthquakes worldwide pose significant challenges to the structural integrity and safety of infrastructure systems. Engineered cementitious composites (ECC), known for their superior tensile ductility, strength and cracking control, provide a promising solution for enhancing earthquake resistance of structures. This study presents a computational assessment of natural pozzolan (NP)-reinforced ECC structures subjected to seismic impact through finite element analysis. The analysis investigates the dynamic performance of NP-ECC structures in terms of stress distribution and structural deformation. A three-story NP-ECC frame structure under a 6.5 magnitude earthquake on Richter scale is studied and compared with a …
Advancing Characterization Of Cementitious Systems Via Raman Imaging, Chirayu Kothari, Sudharsan R. Kumar, Yaman Garg, Nishant Garg
Advancing Characterization Of Cementitious Systems Via Raman Imaging, Chirayu Kothari, Sudharsan R. Kumar, Yaman Garg, Nishant Garg
C3 Symposium 2025
The drive for sustainability within the cement industry has resulted in the formulation of complex low-carbon cements that show considerable variation in their mineralogical phases, chemical compositions, and particle sizes. These differences can impact the workability, strength, and durability of concrete. Accurately characterizing these properties is challenging and requires a combination of techniques such as microscopy, spectroscopy, and diffraction. Raman imaging is particularly valuable for investigating the entire lifecycle of cement, covering everything from anhydrous cements to hydration and long-term durability. Here, we present its capability to analyze the phase composition of Ordinary Portland Cement (OPC) and Calcium Sulfoaluminate (CSA) …