Alien Registration- Seader, Adeline (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/32190/thumbnail.jp

Alien Registration- Seader, Adeline (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/32190/thumbnail.jp

Alien Registration- Seader, Archie J. (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/32191/thumbnail.jp

Alien Registration- Seader, Adeline (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/32190/thumbnail.jp

Alien Registration- Seader, Archie J. (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/32191/thumbnail.jp

Alien Registration- Seader, Sophie (Portland, Cumberland County)

https://digitalmaine.com/alien_docs/32192/thumbnail.jp

Pumpability of Optimized Grade Aggregates

This work validates the gradation boundaries presented by Dr. M. Daniel Cook in his 2015 dissertation. A large variety of concrete gradations were pumped through a pipeline and their pressures were measured, analyzed, and compared. From this, recommendations for aggregates gradations were made to reduce required energy to pump a concrete mixture. A widely used field test, called the Slump Test, was used extensively in this project. Recommendations for slump were also given as a means to determine if a concrete is pump-able. Also, concrete containing air-entraining admixtures were tested to determine what happens when pumping air-entrained concrete. Along with these mixtures, a novel Rapid Shear Test was created as a means for determining whether shear properties of fresh concrete is a major factor in the property changes of pumped concrete. Together, these tests and results provide general recommendations and a framework for further comparative testing in the future.Civil Engineerin

Automatic Decomposition of Nonlinear Equation Systems for Improved Initialization and Solution of Chemical Engineering Process Models

The initialization of process models for chemical engineering systems is often a challenge. While dedicated strategies exist for state of the art column models, novel models need to be initialized manually. In this contribution, we present a first application of these decomposition methods for supporting the initialization and solution of equilibrium- and non-equilibrium-type column models for distillation and compare them to well-known sequential solution methods for each. We show that these methods can supply viable solution procedures for nonlinear systems and are especially helpful in deriving new initialization techniques for novel process equipment