Randolph Kirchain
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View article: Electric vehicle greenhouse gas benefits considering grid emission allocation and charging scheduling
Electric vehicle greenhouse gas benefits considering grid emission allocation and charging scheduling Open
View article: Data-driven material screening of secondary and natural cementitious precursors
Data-driven material screening of secondary and natural cementitious precursors Open
Cement production contributes to >6% of global greenhouse gas emissions, driven by clinker’s energy-intensive production and limestone calcination. Replacing clinker with alternative substitutes is an effective decarbonization strategy. Ho…
View article: Evaluation of the Albedo-induced Radiative Forcing and CO2 Equivalence Savings: A Case Study on Reflective Pavements in Four Selected U.S. Urban Areas
Evaluation of the Albedo-induced Radiative Forcing and CO2 Equivalence Savings: A Case Study on Reflective Pavements in Four Selected U.S. Urban Areas Open
There is a growing interest in developing cool pavement strategies to mitigate pavement’s impact on the global warming in recent years. One of the mitigation strategies is by increasing the solar reflectance (or albedo) of the pavement sur…
View article: Surrogate modelling of surface roughness for asphalt pavements using artificial neural networks: a mechanistic-empirical approach
Surrogate modelling of surface roughness for asphalt pavements using artificial neural networks: a mechanistic-empirical approach Open
View article: Material discovery of secondary and natural cementitious precursors
Material discovery of secondary and natural cementitious precursors Open
Cement production contributes to over 6% of global greenhouse gas (GHG) emissions, driven by clinker’s energy-intensive production and limestone calcination. Substituting clinker with cementitious substitutes is an effective strategy for d…
View article: Stakeholders’ perceptions of and willingness to pay for circular economy in the construction sector
Stakeholders’ perceptions of and willingness to pay for circular economy in the construction sector Open
Adopting Circular Economy practices in the construction industry can help reduce greenhouse gas emissions. However, many barriers exist to adoption, and current perceptions of and willingness to pay for circularity have yet to be quantifie…
View article: Skilling for and Acculturation to Integrated Photonics Industry Using VR Simulations, Game-Based Learning, and Augmented Reality Games
Skilling for and Acculturation to Integrated Photonics Industry Using VR Simulations, Game-Based Learning, and Augmented Reality Games Open
The integrated photonics and fiber optics industries are rapidly expanding and innovating, respectively, to enable transformative new integrated circuit, AI, datacom, wireless, sensing and imaging systems for cloud and mobile computing, au…
View article: Quantifying the drivers of long‐term prices in materials supply chains
Quantifying the drivers of long‐term prices in materials supply chains Open
Raw materials costs form an increasingly significant proportion of the total costs of renewable energy technologies that must be adopted at unprecedented rates to combat climate change. As the affordable deployment of these technologies gr…
View article: A hierarchical Bayesian regression model that reduces uncertainty in material demand predictions
A hierarchical Bayesian regression model that reduces uncertainty in material demand predictions Open
Predictions of metal consumption are vital for criticality assessments and sustainability analyses. Although demand for a material varies strongly by region and end‐use sector, statistical models of demand typically predict demand using re…
View article: What is the potential for prefabricated buildings to decrease costs and contribute to meeting EU environmental targets?
What is the potential for prefabricated buildings to decrease costs and contribute to meeting EU environmental targets? Open
View article: The role of concrete in life cycle greenhouse gas emissions of US buildings and pavements
The role of concrete in life cycle greenhouse gas emissions of US buildings and pavements Open
Significance Changes to concrete production as well as in building and pavements systems—the largest consumers of concrete—can lead to more than 50% reductions in associated GHG emissions by 2050. Over this period, the operational phase of…
View article: Perspectives on Cobalt Supply through 2030 in the Face of Changing Demand
Perspectives on Cobalt Supply through 2030 in the Face of Changing Demand Open
Lithium-ion battery demand, particularly for electric vehicles, is projected to increase by over 300% throughout the next decade. With these expected increases in demand, cobalt (Co)-dependent technologies face the risk of significant impa…
View article: Regional Heterogeneity in the Emissions Benefits of Electrified and Lightweighted Light-Duty Vehicles
Regional Heterogeneity in the Emissions Benefits of Electrified and Lightweighted Light-Duty Vehicles Open
Electrification and lightweighting technologies are important components of greenhouse gas (GHG) emission reduction strategies for light-duty vehicles. Assessments of GHG emissions from light-duty vehicles should take a cradle-to-grave lif…
View article: Accelerated Discovery of Sustainable Building Materials
Accelerated Discovery of Sustainable Building Materials Open
Concrete is the most widely used engineered material in the world with more than 10 billion tons produced annually. Unfortunately, with that scale comes a significant burden in terms of energy, water, and release of greenhouse gases and ot…
View article: Planning strategies to address operational and price uncertainty in biodiesel production
Planning strategies to address operational and price uncertainty in biodiesel production Open
View article: Analysis of cost-environmental trade-offs in biodiesel production incorporating waste feedstocks: A multi-objective programming approach
Analysis of cost-environmental trade-offs in biodiesel production incorporating waste feedstocks: A multi-objective programming approach Open
This is a PDF file of an unedited manuscript that has been accepted for publication in Journal of Cleaner Production. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its fin…
View article: Research Brief: The Influence of Incorporating Uncertainties and Treatment Path Dependence in Performance-based Planning Analyses
Research Brief: The Influence of Incorporating Uncertainties and Treatment Path Dependence in Performance-based Planning Analyses Open
According to the American Society of Civil Engineers (ASCE) 2017 Infrastructure Report Card, the backlog for repair of existing highways across the U.S. totals approximately $420 million. With funding at all-time lows, it is important that…
View article: Research Brief: Capillary Stress During Cement Drying Shrinkage
Research Brief: Capillary Stress During Cement Drying Shrinkage Open
Imagine a household sponge lying next to a kitchen sink. The sponge looks and feels different when it is wet versus when it is dry. When a sponge dries, it shrinks, curls and hardens due to suction forces (called “capillary stress”) which …
View article: Research Brief: Climate Change Mitigation Potential of Pavement Albedo
Research Brief: Climate Change Mitigation Potential of Pavement Albedo Open
Albedo is the measure of how much solar energy is reflected by the Earth’s surface. Lighter color, or high-albedo, surfaces absorb less sunlight energy and reflect more shortwave radiation. Increasing pavement albedo has been considered as…
View article: Integrated Planning for Design and Production in Two-Stage Recycling Operations
Integrated Planning for Design and Production in Two-Stage Recycling Operations Open
View article: Estimating the potential of U.S. urban infrastructure albedo enhancement as climate mitigation in the face of climate variability
Estimating the potential of U.S. urban infrastructure albedo enhancement as climate mitigation in the face of climate variability Open
The climate mitigation potential of U.S. urban infrastructure albedo enhancement is explored using multidecadal regional climate simulations. Increasing albedo from 0.2 to 0.4 results in summer daytime surface temperature decreases of 1.5°…
View article: How to Improve Pavement Life Cycle Cost Analysis: A Case Study of Minnesota
How to Improve Pavement Life Cycle Cost Analysis: A Case Study of Minnesota Open
Life cycle cost analysis (LCCA) frameworks are used by some transportation agencies for economic assessment, but there have been challenges implementing the approach, particularly in the characterization of initial and future costs of mate…
View article: Air leakage has strong influence on building life cycle impacts
Air leakage has strong influence on building life cycle impacts Open
Making informed decisions at the earliest stages of the design process can lead to improved building performance. There are many aspects of a building’s design that can influence overall energy consumption. This research identifies air lea…
View article: Research Brief: Quantifying the impact of pavement reflectivity on radiative forcing and building energy demand in neighborhoods
Research Brief: Quantifying the impact of pavement reflectivity on radiative forcing and building energy demand in neighborhoods Open
Albedo is the measure of the fraction of solar energy reflected by the Earth’s surface. High-albedo surfaces, which are lighter in color, absorb less sunlight energy and reflect more shortwave radiation. The change in radiative energy bala…
View article: Research Brief: A break-even hazard mitigation metric
Research Brief: A break-even hazard mitigation metric Open
CSHub researchers developed the Break Even Mitigation Percent (BEMP) to answer the question: “How much should be invested in mitigation for a particular building?”
View article: Critical Issues When Comparing Whole Building & Building Product Environmental Performance
Critical Issues When Comparing Whole Building & Building Product Environmental Performance Open
Guides, standards, product category rules, and environmental product declarations have emerged to evaluate environmental impacts within the buildings sector. These efforts have certainly moved the field forward, but as of yet still do not …
View article: Accounting for Rehabilitation Activity Uncertainty in a Pavement Life Cycle Assessment using Probability and Decision Tree Analysis
Accounting for Rehabilitation Activity Uncertainty in a Pavement Life Cycle Assessment using Probability and Decision Tree Analysis Open
In any life cycle assessment (LCA) for pavements, the designer must decide on which rehabilitation activities will be used to maintain the pavement over the analysis period. While this sounds simple, the fact is that there are many differe…
View article: The impact of surface albedo on climate and building energy consumption: review and comparative analysis
The impact of surface albedo on climate and building energy consumption: review and comparative analysis Open
This paper presents a state-of-the-art review of the existing research on the climate impacts of albedo. Different analytical approaches and modeling works are synthesized and discussed.
View article: The decision-making process in the design of residential structures
The decision-making process in the design of residential structures Open
Building codes and standards have been key drivers in shifting industry towards more energy efficiency, but it is important to take a more holistic approach toward GHG mitigation and evaluate the impact of design decisions from constructio…
View article: Author Index
Author Index Open