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Articles 301 - 330 of 18493
Full-Text Articles in Entire DC Network
Semiconductors & Microelectronics In Middle School Technology & Engineering: Integrating Emerging Stem Workforce Contexts Into The Classroom, Greg J. Strimel, Deana Lucas, Yubin Lee, Victoria Constantine, Tamara J. Moore, Morgan Hynes, Selcen Guzey
Semiconductors & Microelectronics In Middle School Technology & Engineering: Integrating Emerging Stem Workforce Contexts Into The Classroom, Greg J. Strimel, Deana Lucas, Yubin Lee, Victoria Constantine, Tamara J. Moore, Morgan Hynes, Selcen Guzey
School of Engineering Technology Faculty Publications
This case study explores the integration of microelectronics contexts and content into middle school classrooms as part of a workforce development initiative intended to address national labor force needs arising from increased investments in the semiconductor industry. The study follows four middle school technology and engineering teachers as they develop, implement, and refine an instructional unit designed to introduce students to microelectronics production and semiconductor-related careers. Through classroom observations and iterative curriculum development, this exploratory case study reviewed how emerging STEM workforce contexts, such as semiconductors and microelectronics, can be integrated into middle school instruction. The results provide a practical …
Climate Change Agricultural Comparative Advantage And The Us Trade Balance, Elizabeth A. Fraysse, Thomas Hertel, Roman M. Keeney
Climate Change Agricultural Comparative Advantage And The Us Trade Balance, Elizabeth A. Fraysse, Thomas Hertel, Roman M. Keeney
Department of Agricultural Economics Faculty Publications
Current science indicates that warming and elevated atmospheric CO2 will have ambiguous results for crop productivity depending on crop type and geographic location, whereas increased heat stress makes livestock and human labor less productive. The differential impacts across regions will alter comparative advantage and shift the patterns of global trade. This paper employs an economywide trade model to assess all three types of productivity shocks under a 3°C global warming scenario. We find that the widening agricultural trade deficits persist, even as the overall US trade balance improves due to enhanced investment inflows.
Informed Learning In Place: Tales From A Field Station, Thom Gerrish, Rachel K. Fundator, Clarence D. Maybee, Karen A. Reiman-Sendi
Informed Learning In Place: Tales From A Field Station, Thom Gerrish, Rachel K. Fundator, Clarence D. Maybee, Karen A. Reiman-Sendi
Libraries Faculty and Staff Scholarship and Research
This study investigates how students learn to use information at a remote field station to prepare for roles as environmental researchers, climate advocates, and citizens. Using a semi-structured interview approach, the researchers examined the perceptions of twelve field station instructors on how their students engage with information to learn in a place-based educational context. Three interrelated themes emerged that demonstrate the varied ways in which students need to learn to use information: (1) Leveraging interdisciplinary lenses, where students integrate diverse perspectives to interpret environmental information; (2) Acculturating to field research practices, where students gain practical research and data skills through …
Strategic Collection Management In Academic Libraries - Balancing Digital Resources, Print Collections, And Study Spaces, Xiaolu Guo, Trish Wilson
Strategic Collection Management In Academic Libraries - Balancing Digital Resources, Print Collections, And Study Spaces, Xiaolu Guo, Trish Wilson
Proceedings of the IATUL Conferences
In the time of digital transformation and constrained resources, academic libraries must align collections with institutional priorities. This paper presents how Victoria University of Wellington Library’s strategic approach to balancing physical collections and student needs for study space. By sharing practical approaches and lessons learnt from collection evaluation initiatives, this paper will explore how an academic library seeks to align collections with institutional goal s in a sustainable, user-cantered way. Key discussion points include collection budget and usage trends; stakeholder engagement and UX; data driven approaches; and staff capability building.
Book Review Of To Save And To Destroy: Writing As An Other, Nguyen H B Le
Book Review Of To Save And To Destroy: Writing As An Other, Nguyen H B Le
Journal of Southeast Asian American Education and Advancement
Viet Thanh Nguyen’s To Save and to Destroy is a collection of his Norton lectures where he uses his generational stories of continuous immigration throughout Vietnam and the United States to explore how writing, with both internal and external experiences, shape our own identities, and forces that come into oppression, silence, and Otherness. In other words, the book depicts how he himself is seen from multiple others: “the Vietnamese, the Asian, the minoritized, the racialized, the colonized, the hybrid, the hyphenated, the refugee, the displaced, the artist, the writer, the smart ass, the bastard, the sympathizer, and the committed” (p. …
Evaluating Different Soil Health Parameters For Edge-Of-Field Water Quality, Dipesh Giri, Siddhartho Shekhar Paul, Yichao Rui, Molly Meyers
Evaluating Different Soil Health Parameters For Edge-Of-Field Water Quality, Dipesh Giri, Siddhartho Shekhar Paul, Yichao Rui, Molly Meyers
Symposium of Digital Agriculture
Soil health indicators are increasingly used to guide conservation practice outcomes, but their vertical distribution and relationship to nutrient losses in surface runoff remain understudied. Since 2016, we have conducted multi-depth soil health assessments across agricultural fields in the Great Lakes Basin transitioning to conservation practices such as cover cropping and no-till. Our goal was to identify soil metrics that are predictive of edge-of-field (EOF) water quality outcomes. We assessed 21 biological, chemical, and physical soil indicators at 0–5 cm and 5–15 cm depths, calculating stratification ratios (SR = 0–5 cm ÷ 5–15 cm) for 57 site-years. Nine indicators met …
Dronesar: A Uav Based Synthetic Sperture Radar For Soil Moisture Remote Sensing, Leo Li, Lena Azimi, Melba Crawford, James Garrison
Dronesar: A Uav Based Synthetic Sperture Radar For Soil Moisture Remote Sensing, Leo Li, Lena Azimi, Melba Crawford, James Garrison
Symposium of Digital Agriculture
Soil Moisture is a critical component of the earth water cycle and very important for plant health and development. DroneSAR is a drone based synthetic aperture radar technology that can provide high resolution field level soil moisture measurement data that can be used for flood/drought monitoring and crop yield prediction. Currently, this technology is under algorithm development for soil moisture retrieval.
Geospatial Modeling Of Spatiotemporal Variability In Farm-Scale Soil Organic Matter Dynamics, Amiya Kalra, Rachel Stevens, Shams R Rahmani, Daniel J. Quinn, Shaun Casteel, Siddhartho S. Paul
Geospatial Modeling Of Spatiotemporal Variability In Farm-Scale Soil Organic Matter Dynamics, Amiya Kalra, Rachel Stevens, Shams R Rahmani, Daniel J. Quinn, Shaun Casteel, Siddhartho S. Paul
Symposium of Digital Agriculture
Soil organic matter (SOM) is a key indicator of soil health, which is vital for maintaining future crops and income. Furthering our understanding of long-term variability in SOM and digital soil mapping methods of SOM will help farmers make management decisions supporting stable yields. While SOM dynamics have been studied in some regional-scale and plot-level studies, their spatiotemporal variability at farm scale is largely unstudied. In this research, we used geospatial models to identify and interpret long-term trends (2015-2024) in SOM at farm scale using the Purdue University research farm in West Lafayette, Indiana as a case study. Our SOM …
An Academia-Community Partnership Aiming To Benefit The Well-Being Of Shelter Cats And Promote The Learning Outcomes Of College Students, Shlomit Flaisher-Grinberg
An Academia-Community Partnership Aiming To Benefit The Well-Being Of Shelter Cats And Promote The Learning Outcomes Of College Students, Shlomit Flaisher-Grinberg
People and Animals: The International Journal of Research and Practice
More than three million cats enter U.S. animal care and control facilities annually. Although many are adopted, others spend a prolonged amount of time at the animal shelter while facing a variety of stressors. The current project explored the possibility of creating an academia–community partnership aiming to establish a college-based foster program that will allow undergraduate students to socialize and train shelter cats as a part of an academic course. It was hypothesized that the program will positively impact the well-being of shelter cats, improve their adoption outcomes, and support students’ learning outcomes. Students enrolled in the Learning course at …
Birck Nanotechnology Center Technical Overview, Purdue University Office Of Research, Ron Reger
Birck Nanotechnology Center Technical Overview, Purdue University Office Of Research, Ron Reger
University General Facility Boilerplate Descriptions
Overview of the Birck Nanotechnology Center infrastructure including the Scifres Nanofabrication Laboratory and a suite of specialized laboratory facilities.
Tacscope: A Miniaturized Vision-Based Tactile Sensor For Surgical Applications, Md Rakibul Islam Prince, Sheeraz Athar, Pokuang Zhou, Yu She
Tacscope: A Miniaturized Vision-Based Tactile Sensor For Surgical Applications, Md Rakibul Islam Prince, Sheeraz Athar, Pokuang Zhou, Yu She
School of Industrial Engineering Faculty Publications
The lack of tactile feedback in robot-assisted minimally invasive surgery (RMIS) limits surgeons’ ability to palpate tissues, a critical technique for locating abnormalities such as tumors. To address this challenge, we introduce TacScope, a novel, vision-based tactile sensor leveraging the magnification properties of a spherical-surface elastomer to provide tactile feedback for advanced clinical applications. TacScope features a robust, low-cost, and easyly fabricate design, enabling seamless integration into surgical robotic setups. It reconstructs high-resolution 3D geometry from variations in particle-density distribution across its elastomer surface, requiring only a single image for calibration. The curved elastomer membrane alters particle-density distribution under …
Mortal Writing: Toward Braver Concepts Of “Better Writers,” Peerness, And Nationality, Enrique Paz, Annalee Roustio
Mortal Writing: Toward Braver Concepts Of “Better Writers,” Peerness, And Nationality, Enrique Paz, Annalee Roustio
The Writing Center Journal
Reflecting on experiences with two Afghan students writing in response to events following the U.S. withdrawal from Afghanistan in 2021, this essay challenges traditional writing center practices in response to the evolving and urgent writing needs of diverse (international) student populations. Focusing on the intersectional identities of student writers and the geopolitical realities they face, we develop further the call to transform writing centers into “brave spaces.” Deploying this framework of bravery, we call for a reevaluation of the concept of “better writers,” of empathy constructed primarily through peerness, and of the current conceptualization of nationality in writing center scholarship. …
“I Just Need Another Set Of Eyes”: Understanding Students’ Idea Of The Writing Center, Isabelle M. Lundin, Neal Lerner
“I Just Need Another Set Of Eyes”: Understanding Students’ Idea Of The Writing Center, Isabelle M. Lundin, Neal Lerner
The Writing Center Journal
In this article, we describe writing center clients’ “idea” of the writing center based on interviews with 26 writing center users and qualitative coding of interview transcripts. Participants’ constructs of the writing center provide a lens to better understand how they perceive writing as an activity, the “writing culture” of the institution, the role of the writing center in their writing processes, and, ultimately, if they see writing centers in the way we would expect them to. The tensions we derived from our data are (1) between who and what tutors are and offer: discipline-specific expertise (including the disciplines of …
“It Would Literally Take The World To End For Us To Do This”: Writing Center Consultants’ Affective Responses To Consulting Modalities, Anita Long, Destiny R. Brugman
“It Would Literally Take The World To End For Us To Do This”: Writing Center Consultants’ Affective Responses To Consulting Modalities, Anita Long, Destiny R. Brugman
The Writing Center Journal
This article discusses findings from semi-structured interviews with writing consultants about their affective experiences working across three different consulting modalities: in person, asynchronous, and synchronous. This study offers affect as a lens for understanding consultants’ responses to and strategies for consulting in multiple modalities and argues that by attending to affect, emotion, and disposition in consulting we can better support our consultants when they’re consulting in different modalities.
The Rhetorical Function Of Writing Center Employee Handbooks, Talisha Haltiwanger Morrison
The Rhetorical Function Of Writing Center Employee Handbooks, Talisha Haltiwanger Morrison
The Writing Center Journal
In his award-winning book, Around the Texts of Writing Centers, R. Mark Hall (2017) asserts the importance of everyday writing center texts, claiming that these documents “both enact and forward writing center scholarship” (p. 3). It is Hall’s position that such “everyday” documents are essential to understanding the work of writing centers, but that their very ubiquity leads writing center scholars and administrators to ignore them or take their functions for granted. In this study, I take up Hall’s call for more scholarly attention to everyday writing center texts through a thematic rhetorical analysis of nine writing center employee …
Durability Assessment Of Low-Carbon Concretes Using Electrical Resistivity, Chloride Migration And Diffusion Modelling, Salim Malami, Dimitry Val, Benny Suryanto
Durability Assessment Of Low-Carbon Concretes Using Electrical Resistivity, Chloride Migration And Diffusion Modelling, Salim Malami, Dimitry Val, Benny Suryanto
International Conference on Durability of Concrete Structures
Durability design for reinforced concrete increasingly relies on performance-based indicators of transport processes that govern corrosion initiation. This study evaluates concretes with supplementary cementitious materials (SCMs) (fly ash (FA), ground-granulated blast-furnace slag (GGBS), limestone powder (LP), and limestone calcined clay cement (LC3)) using electrical resistivity and rapid chloride migration (RCM, NT Build 492) testing. Twelve mixes (w/b = 0.40 and 0.55), including binary and ternary binders benchmarked against Portland cement (PC), were tested. Resistivity was measured on cubes with embedded stainless-steel electrodes, whereas chloride diffusion coefficients were measured directly using the RCM method and compared with the values calculated from …
Durability Assessment Of Low-Carbon Concrete Using Electrical Resistivity And Derived Transport Parameters, Elo Merit Imitini, Benny Suryanto, Bhaskar Sen Gupta
Durability Assessment Of Low-Carbon Concrete Using Electrical Resistivity And Derived Transport Parameters, Elo Merit Imitini, Benny Suryanto, Bhaskar Sen Gupta
International Conference on Durability of Concrete Structures
Effective assessment of reinforced concrete durability necessitates monitoring of concrete performance using straightforward yet robust technique over an extended period of time. This study investigates six low-carbon concrete mixes incorporating up to 70% Portland cement replacement using binary and ternary combinations of ground granulated blast furnace slag (GGBS), fly ash (FA), and limestone powder (LP). Electrical resistivity measurements were undertaken over a 360-day period and used to derive formation factors and instantaneous diffusion coefficients, offering insight into the evolving pore structure and ionic transport. The results showed that all mixes exhibited a progressive increase in resistivity, indicative of continued hydration …
Aci Standards For Concrete Proportions, Qualification Testing And In-Process Testing During Construction, Nausherwan Hasan
Aci Standards For Concrete Proportions, Qualification Testing And In-Process Testing During Construction, Nausherwan Hasan
International Conference on Durability of Concrete Structures
This paper provides a summary of the American Concrete Institute (ACI) design standards concrete mixture proportions for various exposure conditions in USA. As defined by ACI 318, for each class of concrete and exposure condition, minimum water to cementitious ratio and compressive strength, are prescribed. The responsibility of selecting the concrete mixture proportions design rest with a Professional Engineer, licensed in the State where the construction is carried out. Trial batches of concrete are performed in accredited laboratory, in accordance with ACI 211.1, with adequate lead time to ensure that the test results are available, prior to construction. Attention is …
Corrosion Risk Of Rc Structures Against Combined Chloride Ingress And Carbonation Under Future Climate Projections, C.S. Das, M.R. Ahmad, P. Zhang, J-.G. Dai
Corrosion Risk Of Rc Structures Against Combined Chloride Ingress And Carbonation Under Future Climate Projections, C.S. Das, M.R. Ahmad, P. Zhang, J-.G. Dai
International Conference on Durability of Concrete Structures
The deterioration of reinforced concrete (RC) structures is primarily caused by the corrosion of reinforcement due to chloride ingress or carbonation, with temperature playing a significant role in this process. This study presents a multi-physics modeling framework that integrates mass transport, electrochemical reactions, and material damage to simulate corrosion in RC structures. The model utilises experimentally validated parameters, including temperature-dependent chloride transport rates and binding capacities, to achieve enhanced accuracy. It was applied to assess the corrosion risk of RC structures in Hong Kong under various climate scenarios. Results showed that while higher temperatures accelerate chloride transport, they also increase …
Investigation Of Capillary Pressure Evolution And Early-Age Shrinkage In Concrete Using A High-Capacity Tensiometer, Armin Jamali, Joao Mendes, Brabha Nagaratnam, Michael Lim
Investigation Of Capillary Pressure Evolution And Early-Age Shrinkage In Concrete Using A High-Capacity Tensiometer, Armin Jamali, Joao Mendes, Brabha Nagaratnam, Michael Lim
International Conference on Durability of Concrete Structures
Shrinkage-induced cracking is a critical durability concern in concrete structures, particularly those with low volume-to-surface ratios, leading to increased maintenance costs and reduced service life. Early-age concrete is especially vulnerable to shrinkage cracking due to its limited strength development. Capillary pressure is a primary driver of early-age shrinkage; however, conventional measurement techniques are limited to pressures below 100 kPa and durations of approximately seven hours post-casting, restricting a comprehensive understanding of capillary pressure evolution and its correlation with shrinkage and cracking potential. This study utilises a novel high-capacity tensiometer (HCT) capable of measuring capillary pressures up to 2000 kPa, significantly …
Assessment Of Ggbs-Blended-Concrete Durability With Modified Water Permeability Method, Soumyaranjan Panda, Supratic Gupta, Saubhagya Kumar Panigrahi
Assessment Of Ggbs-Blended-Concrete Durability With Modified Water Permeability Method, Soumyaranjan Panda, Supratic Gupta, Saubhagya Kumar Panigrahi
International Conference on Durability of Concrete Structures
The construction industry is increasingly embracing sustainable materials to mitigate environmental concerns and reduce the carbon footprint of conventional practices. Concrete, a vital material in modern infrastructure, is valued for its versatility and durability. However, Ordinary Portland Cement (OPC), the primary binder in conventional concrete, presents significant environmental challenges, including high carbon dioxide emissions and substantial energy consumption. With an annual growth rate of 2.5%, cement production exacerbates these issues, necessitating sustainable alternatives. Ground granulated blast-furnace slag (GGBS), a byproduct of the iron industry, is a promising supplementary material. Its use reduces cement consumption, enhances sustainability, and promotes eco-friendly construction …
Relationship Between Water Contents And Electrical Conductivity In Concrete, Ki-Tae Park, Jaehwan Kim, Dong-Woo Seo, Sangki Park
Relationship Between Water Contents And Electrical Conductivity In Concrete, Ki-Tae Park, Jaehwan Kim, Dong-Woo Seo, Sangki Park
International Conference on Durability of Concrete Structures
This study investigates the relationship between moisture absorption and electrical conductivity in concrete, aiming to evaluate the feasibility of using electrical impedance as a non-destructive indicator of moisture transport behaviour. Concrete specimens with varying water-to-cement (w/c) ratios were prepared and conditioned for 150 days under controlled air-drying conditions. Moisture absorption tests were conducted in accordance with ASTM C1585-20, and both weight change and impedance were measured over time. Impedance data were collected across a wide frequency range (10 Hz to 1 MHz) using a two-point measurement configuration, and direct current (DC) electrical conductivity was derived through nonlinear regression analysis based …
Simple Probabilistic Method For Chloride Transport In Concrete, Jaehwan Kim, Sangki Park, Dong-Woo Seo, Ki-Tae Park, Joohyung Kim
Simple Probabilistic Method For Chloride Transport In Concrete, Jaehwan Kim, Sangki Park, Dong-Woo Seo, Ki-Tae Park, Joohyung Kim
International Conference on Durability of Concrete Structures
It is a well-known fact that reinforced concrete structures exposed to marine environments suffer from reinforcement corrosion due to chloride ingress, which degrades the performance of the structure. To address this issue, reinforced concrete structures are designed and constructed to have a service life of more than 100 years, but to ensure safety or durability, it is necessary to accurately predict the onset of reinforcement corrosion. Various prediction models have been developed for chloride transport in concrete, including physically based models, with Fick's 2nd law being the most commonly used empirically based model for chloride penetration in concrete. However, the …
Machine-Learning Pci Forecasts For Concrete Pavements: Evidence From A Nigerian Airfield, Abubakar Ahmad Shehu, Mohamed Shadi Mohamed, Arab M. Zakwan, Jinhui Jiang
Machine-Learning Pci Forecasts For Concrete Pavements: Evidence From A Nigerian Airfield, Abubakar Ahmad Shehu, Mohamed Shadi Mohamed, Arab M. Zakwan, Jinhui Jiang
International Conference on Durability of Concrete Structures
This study develops data-driven Pavement Condition Index (PCI) forecasting for rigid (jointed concrete) airfields to support maintenance planning, risk mitigation, and lifecycle analysis. Traditional PCI surveys per ASTM D5340 are manual, time-consuming, and subjective, motivating machine-learning alternatives. Using panel-level observations, five models predict next-year PCI from readily available variables: prior-year PCI, annual aircraft traffic, temperature, and rainfall. The models include ordinary least squares (linear), ridge, lasso, random forest (RF), and a feedforward artificial neural network (ANN). All models performed well on held-out validation data; the ANN was best, achieving ��2 = 0.985, MSE = 0.286, MAE = 0.397, and RMSE …
Effect Of Using Recycled Returned Concrete Aggregate On The Strength And Durability Aspects Of Concrete, Saugat Humagain, Ashish Bista, Prabir Kumar Sarker
Effect Of Using Recycled Returned Concrete Aggregate On The Strength And Durability Aspects Of Concrete, Saugat Humagain, Ashish Bista, Prabir Kumar Sarker
International Conference on Durability of Concrete Structures
A considerable amount of concrete is returned from construction sites due to various reasons such as excess quantity remaining after casting, not meeting the site specifications and cancellation of orders. In this study, the hardened returned concrete was crushed and used as recycled aggregate to produce new concrete. However, due to young age and inadequate compaction, the properties crushed returned concrete aggregate (CRCA) are different from those of commonly used recycled aggregates obtained from construction and demolition wastes. CRCA was used as 50% and 100% replacements of natural coarse aggregate (NCA). The effect of CRCA was evaluated by workability, strengths, …
Towards The Use Of Quarry Wastes In Cementitious Composites For Sustainable Construction, Adrian Chajec
Towards The Use Of Quarry Wastes In Cementitious Composites For Sustainable Construction, Adrian Chajec
International Conference on Durability of Concrete Structures
This study explores the use of quarry waste powders as partial replacements for cement in concrete, aiming to improve the sustainability of construction materials. Three types of powders—granite (GP), limestone (LP), and quartz (QP)—were used to replace 20% of cement by mass in concrete mixes. The research evaluates the impact of these substitutions on fresh properties, mechanical performance, durability under sulphate attack, and overall environmental and economic efficiency. Experimental tests included slump flow, setting time, compressive strength at 28 and 90 days, and resistance to sulphate-induced mass and strength loss. Additionally, carbon dioxide emissions and material costs were calculated based …
Characterization Of Incinerator Bottom Ash Aggregate (Ibaa) From Four Scottish Incinerators, Mohammad Naser Norouzifar, Tom Dyer, Moray Newlands
Characterization Of Incinerator Bottom Ash Aggregate (Ibaa) From Four Scottish Incinerators, Mohammad Naser Norouzifar, Tom Dyer, Moray Newlands
International Conference on Durability of Concrete Structures
Incinerator Bottom Ash Aggregate (IBAA), produced as a by-product from Energy-from-Waste (EfW) facilities in Scotland, is gaining acceptance as a sustainable alternative for concrete applications. This shift is driven by Scotland’s forthcoming landfill ban, which encourages increased recycling and diversion of waste from landfill. This study presents a detailed characterization of IBAA, sourced from four Scottish incinerators across various particle size fractions. Physical testing showed that the coarse IBAA fractions (12–22 mm) meet BS EN 8500-2 for use in ready-mixed and precast non-structural concrete. Furthermore, Los Angeles abrasion values (36–42%) and flakiness indices (13–18%) lend themselves well to this type …
Co-Creation Of Sustainable Concrete For Harsh Environments, Seyedalireza Mohammadirad, Jenny Harmon O'Driscoll, Michael O'Shea, Eoghan Clifford, Páraic Ryan
Co-Creation Of Sustainable Concrete For Harsh Environments, Seyedalireza Mohammadirad, Jenny Harmon O'Driscoll, Michael O'Shea, Eoghan Clifford, Páraic Ryan
International Conference on Durability of Concrete Structures
The need to decarbonise construction has intensified interest in low-clinker, high-durability concretes for aggressive environments such as marine and water/wastewater infrastructure. This study presents a co-created research framework combining systematic literature review, stakeholder engagement, and performance-based experimental design to evaluate both conventional and emerging Supplementary cementitious materials (SCMs). SCM selection was guided by oxide composition (CaO/SiO₂, CaO/Al₂O₃), hydration kinetics, durability trends, and industry input. Meta-analyses of acid and sulphate resistance identified key compositional thresholds and performance anomalies, supporting the inclusion of biomass fuel ash (BFA) and limestone calcined clay cement alongside fly ash and GGBS. A standard industry mix (C32/40) …
Impact Of Systematic Classification And Identification Of Treatment Methods Of Mine Tailings On Concrete Durability, Berika Ceren Cihan Yilmaz, Ceren Ince, Demetrios M. Cotsovos, Richard James Ball
Impact Of Systematic Classification And Identification Of Treatment Methods Of Mine Tailings On Concrete Durability, Berika Ceren Cihan Yilmaz, Ceren Ince, Demetrios M. Cotsovos, Richard James Ball
International Conference on Durability of Concrete Structures
The rapid increase in mine tailings generation poses significant environmental challenges, with current disposal methods often unsustainable and leading to catastrophic failures such as tailing pond collapses or toxic slurry spills, resulting in fatalities and severe environmental damage. The urgency for sustainable construction materials is clear, particularly as the global focus shifts toward net-zero emissions and circular economies. Concrete, a primary construction material, traditionally depends on natural resources, making it imperative to explore alternatives that reduce environmental impacts. Mine tailings, with their rich elemental and oxide composition, present a promising option for partial replacement in concrete. Despite this potential, the …
Recycled Coarse Aggregate From Large-Panel Demolitions In Self-Compacting Concrete: Performance And Sustainability, Seweryn Daniel Malazdrewicz
Recycled Coarse Aggregate From Large-Panel Demolitions In Self-Compacting Concrete: Performance And Sustainability, Seweryn Daniel Malazdrewicz
International Conference on Durability of Concrete Structures
Buildings constructed with large-panel technology (LPS) before 1990 are increasingly being demolished in Western Europe, and this trend is likely to expand into Central and Eastern Europe due to rising construction activity and limited development space. Despite their age, the concrete from these structures often retains good strength, making it a viable candidate for recycling. This study investigates the reuse of coarse recycled concrete aggregate (RCA) from demolished LPS panels in self-compacting concrete (SCC), a mix known for its high water demand and sensitivity to aggregate properties. The research evaluates whether RCA from LPS should be treated as a distinct …