Akerele, D. D., Aguayo, F., & Wu, L. (2025). Portland Limestone Cement in Concrete Pavement and Bridge Decks: Performance Evaluation and Future Directions. Buildings, 15(5), 660. https://doi.org/10.3390/buildings15050660
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Abstract
With the rising demand for sustainable infrastructure, addressing the limitations of Ordinary Portland Cement (OPC) is crucial, particularly for exposed structures such as pavements and bridge decks. Portland limestone cement (PLC) is a sustainable alternative that delivers environmental benefits and comparable performance. This study used a systematic review and meta-analysis with a random-effects model to evaluate PLC’s strength development, durability, and sustainability. The findings indicate that PLC generally matches or surpasses OPC in terms of compressive strength, freeze–thaw resistance, and sulfate durability. However, its setting time and early-age cracking require further optimization, especially in cold climates. Additionally, this study highlights the fire performance advantages of PLC and its enhanced chloride resistance. The analysis identified critical research gaps, including long-term field performance and regional adaptation to extreme environmental conditions. These findings contribute to a deeper understanding of PLC’s role in sustainable construction and offer future research directions on hybrid cements and admixture compatibility.
Keywords
Portland limestone cement (PLC); type 1L cement; concrete pavement; bridge deck; sustainability; low-carbon; CO2 reduction
Celina Balderas Guzman, Networked shorelines: A review of vulnerability interactions between human adaptation to sea level rise and wetland migration, Global Environmental Change, Volume 92, 2025, 102985, ISSN 0959-3780, https://doi.org/10.1016/j.gloenvcha.2025.102985.
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Abstract
Facing urgent climate risks, many human and non-human actors are adapting to climate change with adaptations that sometimes shift vulnerabilities to other actors. Shifting vulnerabilities is a type of maladaptation and understanding them is a critical component of adaptation planning given the growing incidence of maladaptation across many sectors and regions. This review creates an analytical framework, called the Vulnerability Interactions Framework, to identify instances of shifting vulnerabilities from across the natural and social science literature and interpret them using a systematic approach. To demonstrate its utility, the analytical framework is applied in the context of coastal adaptation to sea level rise on the topics of coastal squeeze and wetland migration. Along certain shorelines, humans are building protective infrastructure, such as sea walls and levees, to protect themselves from sea level rise. Meanwhile, coastal wetlands—one of the world’s most valuable ecosystems—are able to adapt to sea level rise when they can migrate landward. This wetland adaptation is often blocked by human shoreline development and infrastructure—a phenomenon known as coastal squeeze. Yet migrating wetlands may also impact human actors in negative ways. This review identifies 53 distinct ways that vulnerabilities can shift across human and non-human actors on physical, economic, environmental, social, cultural, and institutional dimensions. These interactions reflect particular biophysical and social contexts and can operate on multiple spatial and temporal scales. Because of these complex interactions, adaptation planning must look towards developing solutions that are cross-sectoral and cross-scalar in scope, place adaptation within a larger socio-ecological context, consider a phased approach, engage with communities, build local adaptive capacity, and address personal, social, and cultural losses inherent in coastal transformations. Overall, the Vulnerability Interactions Framework can be used as a research or planning tool to map observed or hypothetical shifts in vulnerability.
Keywords
Vulnerability; Adaptation; Maladaptation; Sea level rise; Wetlands; Socio-ecological systems
Akerele, D. D., & Aguayo, F. (2024). Evaluating the Impact of CO2 on Calcium SulphoAluminate (CSA) Concrete. Buildings, 14(8), 2462. https://doi.org/10.3390/buildings14082462
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Abstract
The construction industry is a significant contributor to global CO2 emissions, primarily due to the extensive use of ordinary portland cement (OPC). In response to the urgent need for sustainable construction materials, calcium sulphoaluminate (CSA) cement has emerged as a promising alternative. CSA cement is renowned for its low carbon footprint, high early-age strength, and superior durability, making it an attractive option for reducing the environmental impact of construction activities. While CSA cement offers benefits in carbon emissions reduction, its susceptibility to carbonation presents challenges. Although the body of literature on CSA cement is rapidly expanding, its adoption rate remains low. This disparity may be attributed to several factors including the level of scientific contribution in terms of research focus and lack of comprehensive standards for various applications. As a result, the present study sets out to track the research trajectory within the CSA cement research landscape through a systematic literature review. The study employed the Prefer Reporting Item for Systematic Review and Meta-Analysis (PRISMA) framework to conduct a literature search on three prominent databases, and a thematic analysis was conducted to identify the knowledge gap for future exploration. The study revealed that while CSA concrete demonstrates superior early-age strength and environmental resistance, its susceptibility to carbonation can compromise structural integrity over time. Key mitigation strategies identified include the incorporation of supplementary cementitious materials (SCMs), use of corrosion inhibitors, and optimization of mix designs. The review also highlights the global distribution of research, with notable contributions from the USA, China, and Europe, emphasizing the collaborative effort in advancing CSA concrete technology. The findings are crucial for enhancing sustainability and durability in the construction sector and advancing CSA binders as a sustainable alternative to traditional cement.
Keywords
concrete; calcium sulphoaluminate cement (CSA); mechanical properties; carbonation (CO2); durability; sustainability
Waller, M., Cove, M. V., Daniels, J. C., & Yocom, K. P. (2025). Innovative communication strategies for promoting urban wildlife habitat conservation. Landscape and Urban Planning, 253, 105229-. https://doi.org/10.1016/j.landurbplan.2024.105229
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Abstract
The emerging recognition of the importance of urban habitat and wildlife for increasing biodiversity, driven partly by responses to climate change and urbanization, presents critical opportunities for urban biodiversity conservation and species recovery. However, effectively communicating these benefits to the public and policymakers remains a challenge for scientists and landscape architects with public perceptions, often shaped by diverse socio-cultural factors, serving as obstacles for garnering support. Our research explores innovative communication strategies through an intersectional analysis of planning and design communications and theory in museology and presents a structured approach in the use of charismatic species within interpretive studies to enhance public empathy and the potential for action. This research offers a valuable foundation for planning and design professionals, guiding their efforts to promote urban wildlife habitat and bridge the gaps between scientific knowledge and public advocacy.
Keywords
Urban wildlife habitat; Biodiversity conservation; Communication strategies
The Inaugural CBE Climate Solutions Symposium took place on May 23, 2024. The event began with a reception and poster session, followed by an invited lecture “Every Project is a Climate Opportunity” with Don Davies, PE, SE and Joan Crooks. 36 research posters were submitted and accepted to the symposium. The posters covered a range of topics, from affordable housing in Indonesia (Bella Septianti, Architecture/Design Technology), to CLT and structural steel comparative lifecycle assessment (Mira Malden, Community, Environment, and Planning)….
Dr. Amos Darko, assistant professor in Construction Management has won the competitive international sustainability award, the 2o23 Sustainability Young Investigator Award. The award is in recognition of excellence in the field of sustainability and sustainable development. Congratulations to Dr. Darko on this achievement!
Debrah, C., Chan, A. P. C., Darko, A., Ries, R. J., Ohene, E., & Tetteh, M. O. (2024). Driving factors for the adoption of green finance in green building for sustainable development in developing countries: The case of Ghana. Sustainable Development, https://doi.org/10.1002/sd.3022
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Abstract
While there are many motivating factors for green finance (GF) implementation, a comprehensive taxonomy of these variables is lacking in the literature, especially for green buildings (GBs). This study aims to analyze the criticality and interdependence of GF-in-GB's driving factors. This study develops a valid set of factors to justify the interrelationships among the drivers. The drivers of GF-in-GB are qualitative in nature, and uncertainties exist among them due to linguistic preferences. This study applies the fuzzy Delphi method to validate eight drivers under uncertainties. Fuzzy Decision-Making Trial and Evaluation Laboratory (FDEMATEL) with qualitative information is used to determine the interrelationships among the drivers. The drivers were grouped under two categories: prominent drivers and cause-effect drivers. The findings revealed that “increased awareness of GF models in GB” and “preferential capital requirements for low-carbon assets” are the top two most prominent/important drivers of GF-in-GB. In Ghana, the top three cause group drivers are “climate commitment,” “improved access to and lower cost of capital,” and “favorable macroeconomic conditions and investment returns.” Drivers with the highest prominence values have the potential to affect and/or be affected by other drivers; therefore, managers and policymakers should prioritize promoting or pursuing these drivers in the short term. On the other hand, it is important to pay more than equal attention to the drivers with the highest net cause values because they have the largest long-term impact on the entire system. The theoretical and practical implications of the study are discussed, enhancing understanding and decision-making in GF-in-GB.
Rebecca’s long-term design and research interests involve exploring a gap between built environment design fields and public health research. She believes that an essential component of design activism must be research that can inform equitable policy. Rebecca holds a Master of Landscape Architecture and Graduate Certificate of Global Health from the University of Washington, and is a current NIH Fogarty Scholar. She has spent recent years working with the design-action-research firm Traction on design and research projects that examine built environments as social determinants of human and ecological health in marginalized urban communities in Peru. In addition to English, Rebecca speaks Spanish and Portuguese, and has a blended background in international relations, journalism, and horticulture—all of which is integral to her current interdisciplinary work.
Urban, M.C., Alberti, M., De Meester, L. et al. Interactions between climate change and urbanization will shape the future of biodiversity. Nat. Clim. Chang. (2024). https://doi.org/10.1038/s41558-024-01996-2
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Abstract
Climate change and urbanization are two of the most prominent global drivers of biodiversity and ecosystem change. Fully understanding, predicting and mitigating the biological impacts of climate change and urbanization are not possible in isolation, especially given their growing importance in shaping human society. Here we develop an integrated framework for understanding and predicting the joint effects of climate change and urbanization on ecology, evolution and their eco-evolutionary interactions. We review five examples of interactions and then present five hypotheses that offer opportunities for predicting biodiversity and its interaction with human social and cultural systems under future scenarios. We also discuss research opportunities and ways to design resilient landscapes that address both biological and societal concerns.
Wang, L., Chan, D. W. M., Darko, A., & Oluleye, B. I. (2024). A-state-of-the-art review of risk management process of green building projects. Journal of Building Engineering, 86. https://doi.org/10.1016/j.jobe.2024.108738
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Abstract
Green buildings (GB) have attracted significant attention for improving sustainability and reducing carbon emissions in the building sector. Like traditional projects, risk management plays a crucial role in green projects. The inadequacy of risk management may lead to diminished workforce performance, delays in project schedules, and poor quality in GB projects. To comprehend risk management in GB projects, it is essential to conduct a state-of-the-art review. This study applied the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) method to select 52 records from the database ‘Scopus’ and ‘Web of Science’ (WoS). A bibliometric analysis indicated that the emphasis in risk management is on the identification and evaluation of risks in engineering projects. Subsequently, a thematic analysis displayed the research topics related to risk management, including (1) methods for identifying risks, (2) risk identification in special conditions, (3) risk assessment with fuzzy sets, social network analysis (SNA), and interpretive structural modeling (ISM), and (4) risk assessment with other technologies. This study focused on the research gaps within the risk management field, specifically in risk identification methods, risk evaluation methods, and risk-mitigating processes. Finally, with research gaps, this study also proposed related research directions for risk management in GB projects.