Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Social and Behavioral Sciences (5571)
- Library and Information Science (3661)
- Arts and Humanities (2258)
- Engineering (1827)
- Education (1588)
-
- Comparative Literature (1383)
- Physical Sciences and Mathematics (814)
- Communication (693)
- Feminist, Gender, and Sexuality Studies (643)
- American Studies (642)
- Rhetoric and Composition (640)
- Film and Media Studies (599)
- European Languages and Societies (596)
- Critical and Cultural Studies (592)
- Reading and Language (592)
- Other Arts and Humanities (583)
- Computer Sciences (560)
- Theatre and Performance Studies (524)
- Other Film and Media Studies (520)
- Television (504)
- Life Sciences (471)
- Civil and Environmental Engineering (443)
- Medicine and Health Sciences (411)
- Civil Engineering (352)
- English Language and Literature (271)
- Psychology (261)
- Engineering Education (230)
- Nanoscience and Nanotechnology (218)
- Business (217)
- Mechanical Engineering (190)
- Keyword
-
- Comparative literature (496)
- comparative literature (488)
- Comparative cultural studies (302)
- comparative cultural studies (297)
- Cultural studies (155)
-
- cultural studies (152)
- Literary theory (136)
- literary theory (135)
- Education (121)
- Information literacy (116)
- Applied sciences (113)
- Problem-based learning (90)
- Media studies (85)
- media studies (84)
- Comparative humanities (81)
- comparative humanities (81)
- Intercultural studies (75)
- Sustainability (75)
- intercultural studies (75)
- Culture and history (73)
- culture and history (73)
- Postcolonial and colonial studies (72)
- postcolonial and colonial studies (72)
- Diasporic, exile, (im)migrant, and ethnic minority writing (71)
- diasporic, exile, (im)migrant, and ethnic minority writing (71)
- Gender studies (68)
- Simulation (68)
- Culture theory (66)
- Feminist studies (66)
- culture theory (66)
- Publication Year
- Publication
-
- Against the Grain (2392)
- CLCWeb: Comparative Literature and Culture (1418)
- International Refrigeration and Air Conditioning Conference (1331)
- The Writing Center Journal (1027)
- International Compressor Engineering Conference (993)
-
- Proceedings of the IATUL Conferences (861)
- The Journal of Purdue Undergraduate Research (650)
- Charleston Library Conference (608)
- Department of Computer Science Technical Reports (474)
- Open Access Dissertations (470)
- CIB Conferences (466)
- Open Access Theses (382)
- Education and Culture (326)
- CTRC Research Publications (295)
- International Conference on Durability of Concrete Structures (285)
- International High Performance Buildings Conference (275)
- Journal of Southeast Asian American Education and Advancement (275)
- Interdisciplinary Journal of Problem-Based Learning (242)
- Purdue Journal of Service-Learning and International Engagement (233)
- Libraries Faculty and Staff Scholarship and Research (229)
- Journal of Aviation Technology and Engineering (212)
- JTRP Technical Reports (200)
- Department of Physics and Astronomy Faculty Publications (199)
- Journal of Pre-College Engineering Education Research (J-PEER) (189)
- Artl@s Bulletin (188)
- Claritas: Journal of Dialogue and Culture (186)
- Birck and NCN Publications (180)
- Department of Electrical and Computer Engineering Technical Reports (166)
- Publications of the Ray W. Herrick Laboratories (138)
- Global Business Languages (137)
- Publication Type
Articles 451 - 480 of 19337
Full-Text Articles in Entire DC Network
Evaluating Policy And Industry-Based Interventions For Healthier Online Food-Away-From-Home Choices: A Scoping Review, Vincenzina Caputo, Jiayu Sun, Ellen J. Van Loo
Evaluating Policy And Industry-Based Interventions For Healthier Online Food-Away-From-Home Choices: A Scoping Review, Vincenzina Caputo, Jiayu Sun, Ellen J. Van Loo
Department of Agricultural Economics Faculty Publications
The rapid digital transformation of the food-away-from-home (FAFH) sector has redefined how consumers access and select meals. Digital delivery platforms such as Uber Eats, Deliveroo, and Meituan have become influential market intermediaries, shaping the nutritional landscape of food environments and raising concerns about their healthfulness. This study reviews empirical evidence on policy-based and industry-led interventions aimed at improving dietary outcomes in digital FAFH environments. Following PRISMA guidelines and using machine-learning–assisted screening (ASReview), 37 peer-reviewed studies were identified across four domains: nutritional labeling, fiscal measures, food-assistance programs, and digital nudges or decision-support tools. Findings indicate that although traditional food-policy instruments designed …
Mapping Empirical Evidence On Artificial Intelligence Tools For Mathematics Teachers: A Scoping Review, Ghan Shyam Joshi, Steven M. Heinold
Mapping Empirical Evidence On Artificial Intelligence Tools For Mathematics Teachers: A Scoping Review, Ghan Shyam Joshi, Steven M. Heinold
Purdue AI in P-12 Education Conference
Artificial Intelligence (AI) is reshaping education, yet its integration into K–12 mathematics remains limited. This scoping review synthesizes 7 empirical studies (2022–2025). The primary purpose of this review is to explore the benefits, challenges, and gaps in AI integration in mathematics. This review is guided by Arksey and O'Malley's scoping review framework. The reviewed literature data is analyzed through reflexive thematic analysis. This review identified four key themes: prompting literacy, accuracy norms, efficiency, and personalization. Results showed that AI can strengthen reasoning and engagement in mathematics teaching and learning. The effectiveness relies on teacher agency, ongoing professional development, and systemic …
Leading The Future: Educational Leaders’ Perceptions Of Artificial Intelligence In K–12 Education, Melissa G. Mcintire
Leading The Future: Educational Leaders’ Perceptions Of Artificial Intelligence In K–12 Education, Melissa G. Mcintire
Purdue AI in P-12 Education Conference
This qualitative study examines how K–12 educational leaders perceive the opportunities and challenges associated with artificial intelligence (AI) as it’s implemented in school districts. Through in-depth interviews with superintendents, principals, and district leaders, the study explores how leaders frame AI’s emerging role, how they navigate organizational readiness, and how they support staff and students during implementation. Grounded in Technology Leadership Theory (Dexter & Richardson, 2019), the study highlights the leadership and technology practices that support sustainable, ethical, and instructionally aligned AI adoption in public schools.
A Comparative Dbr Evaluation For The Four Mainstream Genai Tools In Designing Pbl For 9-12 Stem Education, Yixin Zhang, Sunnie L. Watson, William R. Watson
A Comparative Dbr Evaluation For The Four Mainstream Genai Tools In Designing Pbl For 9-12 Stem Education, Yixin Zhang, Sunnie L. Watson, William R. Watson
Purdue AI in P-12 Education Conference
This comparative study investigates the different emphases of the four mainstream GenAI tools when adopted to design interdisciplinary learning projects for the 9-12 STEM education. It addresses a gap in understanding the specialties of GenAI tools when used to support instructional design in STEM education (Zekaj, 2023). The researchers gave the same prompts for designing a project-based learning session to the GenAI tools: ChatGPT 5, Gemini 2.5 Pro, Copilot, and Claude Sonnet 4.5. The AI-generated outputs were evaluated using the Expert Judgement framework (Dick et al., 2015). Each GenAI revised its own design based on the expert feedback, and the …
Teachers’ Knowledge And Beliefs In The Implementation Of Ai In Algebra Instruction, Comfort Temitope Aje, Modiu Olaguro
Teachers’ Knowledge And Beliefs In The Implementation Of Ai In Algebra Instruction, Comfort Temitope Aje, Modiu Olaguro
Purdue AI in P-12 Education Conference
This review examines how secondary mathematics teachers’ knowledge and beliefs about Artificial Intelligence (AI) shape their use of AI-based learning tools in algebra instruction. Drawing on Wilkins’ (2008) adaptation of Ernest’s (1989) model, the study synthesizes existing literature to explain how teachers’ understanding of AI interacts with their beliefs to influence the depth and quality of classroom implementation. The review highlights the reciprocal relationship between knowledge, beliefs, and practice, emphasizing the need for sustained professional development to support purposeful and equitable integration of AI in mathematics teaching.
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.
University Library Services Innovation: Strategic Ai Integration And Evidence-Based Insights, Liping Yang, Jun Wang, Lulu Wang, Zixuan Zhang
University Library Services Innovation: Strategic Ai Integration And Evidence-Based Insights, Liping Yang, Jun Wang, Lulu Wang, Zixuan Zhang
Proceedings of the IATUL Conferences
Purpose
Artificial intelligence (AI) technologies is reshaping higher education. In response, university libraries are gradually adopting these tools to enhance service capability and foster user engagement. Aligned with Xi’an Jiaotong-Liverpool University’s “Education + AI Strategic Framework”, specifically the strategic goal of AI for Research and Innovation, this study examines how the Library leverages AI technologies to support scientific discovery and provide more inclusive, responsive library services.
Design/methodology/approach
This study provides a comprehensive perspective on the XJTLU Library AI-enhanced service framework. This framework consists of the LibAI Portal, a unified service platform that includes the LibAI Chatbot, LibAI Database Navigator, and …
From Information To Impact: The Strategic Role Of Libraries In University Ranking, Tatiana Usova, Fiona Glasgow, Lisa Chisholm
From Information To Impact: The Strategic Role Of Libraries In University Ranking, Tatiana Usova, Fiona Glasgow, Lisa Chisholm
Proceedings of the IATUL Conferences
Academic libraries are increasingly positioning themselves as strategic partners within their institutions, moving beyond traditional support roles to actively advancing institutional priorities, particularly in global university rankings like QS and Times Higher Education (THE). These rankings significantly influence how universities are perceived and funded, and they rely heavily on the use of bibliometric data, research outputs, and institutional reputation.
This paper, presented by SIGMaRI, examines the evolving role of libraries in the rankings landscape. We will highlight impactful library-led initiatives and partnerships with other strategic university departments that advance the university's reputation and shape institutional research strategies. While libraries share …
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 …
Free-Dom In Creativity: Cost-Accessible Ai Tools For Makerspaces In Academic Libraries, Marvin Factor, Kate Lora Cruz, Yugosto Balbas
Free-Dom In Creativity: Cost-Accessible Ai Tools For Makerspaces In Academic Libraries, Marvin Factor, Kate Lora Cruz, Yugosto Balbas
Proceedings of the IATUL Conferences
The integration of Artificial Intelligence (AI) into academic library makerspaces presents emerging opportunities for enhancing innovation, creativity, and user engagement. However, financial considerations often influence the adoption of advanced technologies, particularly in academic institutions located in developing regions. This study systematically reviews freely available AI tools applicable to makerspace environments in academic libraries, providing a descriptive and comparative analysis of their functionalities and potential applications. By mapping the current landscape of open-access on a gratis level, this research identifies key categories of AI applications such as design generation, image generation, language processing, and data visualization, highlighting the strengths, limitations, and …
Generative Ai As Disruptor And Driver For Library Data Services, Shahira Khair
Generative Ai As Disruptor And Driver For Library Data Services, Shahira Khair
Proceedings of the IATUL Conferences
Over the past decade, academic libraries around the world have focused on developing new services to support data-intensive research and open science. This shift has been driven by funder and publisher mandates emphasizing transparency, reproducibility, and FAIR (Findable, Accessible, Interoperable, Reusable) research l data. Just as these services are maturing, the rapid rise of generative AI tools and their application in research presents a disruptive l force, but also a transformative opportunity for library data services. This paper addresses the evolving impact of generative AI and library data services, contextualized by the experiences of researchers captured in a series of …
Exploring Definitions And Frameworks Of Information Diplomacy: A Scoping Review Protocol, Bethany S. Mcgowan, Tuomas Harviainen
Exploring Definitions And Frameworks Of Information Diplomacy: A Scoping Review Protocol, Bethany S. Mcgowan, Tuomas Harviainen
Libraries Faculty and Staff Scholarship and Research
Information diplomacy is an emerging concept that bridges information science, public diplomacy, and global communication. Although increasingly cited in scholarly and policy discourse, the term lacks definitional clarity and theoretical consensus. A systematic mapping of its explicit usage across disciplines is needed to support conceptual coherence and guide future applications.
This scoping review aims to identify, analyze, and synthesize existing definitions, frameworks, and applications of the term information diplomacy in scholarly and gray literature. The review will explore how the concept has been articulated across domains such as international relations, information policy, and communication, focusing exclusively on sources that explicitly …
Book Review Of A Dozen Delicious Donuts: A Sweet Cambodian-American Story, Syra Yang
Book Review Of A Dozen Delicious Donuts: A Sweet Cambodian-American Story, Syra Yang
Journal of Southeast Asian American Education and Advancement
In A Dozen Delicious Donuts: A Sweet Cambodian-American Story, Chanda Ouk Wolf tells a story about the connection of donut shops and the Cambodian community in southern California while acknowledging the cultural experiences and donut creation that originated in Cambodia. The actual making, and step-by-step process of these donuts, are shared when a baking contest is announced by the main character’s teacher at school.
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 …
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 …
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 (Still) Need Help On Many Things”: A Writing Center Replication Study Of First-Generation College Students’ Writing Challenges And Cultural Capital, Red Douglas, Ashley Cerku, Isabelle Lundin, Mary Gallagher, Xavier Iriarte, Sophia E. Williams, Kaylie Williams
“I (Still) Need Help On Many Things”: A Writing Center Replication Study Of First-Generation College Students’ Writing Challenges And Cultural Capital, Red Douglas, Ashley Cerku, Isabelle Lundin, Mary Gallagher, Xavier Iriarte, Sophia E. Williams, Kaylie Williams
The Writing Center Journal
Research has increasingly addressed first-generation (FG) students both in and outside the center (Baelemian & Feng, 2013; Bond, 2019; Denny et al., 2018; Ward et al., 2012), but there remains a need to address this unique student population from the perspective of critical theory. In a replication study of Bond’s 2019 “‘I Need Help on Many Things, Please’: A Case Study Analysis of First-Generation College Students’ Use of the Writing Center,” we examined the needs and perceptions of self-reported FG students in a writing center at a large, regional, public R2 university in the Midwest. We gathered preexisting digital data …
Front Matter, Georganne Nordstrom, Isaac K. Wang, Sherry Wynn Perdue
Front Matter, Georganne Nordstrom, Isaac K. Wang, Sherry Wynn Perdue
The Writing Center Journal
Front matter and introduction for Writing Center Journal 43.2.
Exploring The Efficacy Of A Source-Based Writing Tutoring Intervention For Multilingual Students In The Writing Center, Dana Lynn Driscoll, Osman Ozdemir
Exploring The Efficacy Of A Source-Based Writing Tutoring Intervention For Multilingual Students In The Writing Center, Dana Lynn Driscoll, Osman Ozdemir
The Writing Center Journal
Source-based writing skills, which include evaluating, synthesizing, and citing sources, are skills that students are expected to acquire as part of college-level writing. Unfortunately, many multilingual writers (MLWs), especially those in advanced degree programs, lack programmatic support and instruction. Thus, writing centers represent a critical site to offer MLWs tutorial-based support. Our study examined whether or not writing centers can help MLWs develop—and transfer—source-based writing skills in a sequence of three tutorials. We recruited five advanced student MLW participants from different cultural backgrounds who were uncomfortable with source use. Through pre-and postwriting samples, interviews, writing process recording videos, and a …
“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 …
Back Matter, Georganne Nordstrom, Isaac K. Wang, Sherry Wynn Perdue
Back Matter, Georganne Nordstrom, Isaac K. Wang, Sherry Wynn Perdue
The Writing Center Journal
Back matter for Writing Center Journal 43.2.
Quantifying Interest In And Sentiment Of Online Media About Greenhouse Gas Emissions From Cattle Production In The United States, Michael L. Smith, Jinho Jung, Nicole Olynk Widmar, Danielle J. Ufer, Maria Berikou, Jayson Lusk
Quantifying Interest In And Sentiment Of Online Media About Greenhouse Gas Emissions From Cattle Production In The United States, Michael L. Smith, Jinho Jung, Nicole Olynk Widmar, Danielle J. Ufer, Maria Berikou, Jayson Lusk
Department of Agricultural Economics Faculty Publications
The public is paying increased attention to the environmental impacts associated with cattle production systems in the US. Thus, cattle producers are increasingly exploring ways to communicate their efforts to reduce those environmental and climate impacts. This study uses online and social media data from 2018 to 2022 to examine public interest in and sentiment about beef and dairy cattle production when discussed within the context of greenhouse gas (GHG) emissions. Variation in mentions and net sentiment over the reporting period is quantified and analyzed. Over the period of data collection, which was interrupted by the COVID-19 pandemic, we find …
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 …
Drying Shrinkage Properties Of Fly Ash Concrete, Moorvi, Supratic Gupta, Meera
Drying Shrinkage Properties Of Fly Ash Concrete, Moorvi, Supratic Gupta, Meera
International Conference on Durability of Concrete Structures
Shrinkage of concrete is a prime aspect affecting the durability and long-term performance of structures. IS 456 specifies the minimum cement content required to control shrinkage, which is of utmost importance in high-strength concrete (M75, M60) and lower strength concrete (M30), to be 450 kg/m³. IS456 mentions that shrinkage testing should be conducted to assess the possible decrease in volume due to moisture loss since excessive shrinkage can lead to cracking and the loss of structural integrity. However, codal provision or requirement is mentioned in the code. The literature available about shrinkage with change with fly ash is extremely limited. …
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 …