Dr. Allena’s research interests are in the field of concrete materials, including ultra-high performance concrete and engineered cementitious composites.
A WRPS Faculty Fellow, he is strongly committed to pursuing innovative research related to advanced infrastructure materials that are sustainable and resilient.
Dr. Allena’s specific research areas include:
- Ultra-high performance concrete
- Engineered cementitious composites
- Concrete durability
- Early-age and longer term shrinkage of concrete
- Reuse/recycling of materials
- Light weight aggregate concrete
- Supplementary cementitious materials
Dr. Demissie’s research areas are hydrology and water resource engineering. His main research interest focuses on improving our understanding of surface and subsurface hydrology and their sustainability through innovative use of modeling and experimental data.
Special research topics include development and application of:
- inverse modeling, data assimilation, data-mining, and machine-learning techniques to integrate multi-scale observational and experimental data into hydrologic models,
- stochastic modeling and uncertainty analysis to quantify modeling uncertainty stem from various sources,
- integrated hydrology, climate, economic, and social network models to study potential effects of natural and human induced changes and uncertainties on water resources and quality;
- multi-objective optimization tools to assist water and land management decisions.
- Reaction kinetics
- Groundwater flow
- Modeling of flow and contaminant transport in the subsurface
- Modeling of adsorption in packed bed reactors