No abstract

No abstract

This paper describes a review of the state-of-the-art research carried on the fresh and hardened properties of Alkali Activated Binders and Concretes. Though, many research have been carried out in the recent times on alkali activated binders, few key parameters still remain unattended, that restricts the commercial application of AAMs to the general construction activities. Fresh properties, mechanical strength and durability performance of Alkali activated concrete with various Alumino silicates as base materials is mentioned. An essential parameter of Alkali activated concrete is the concentration of alkaline solution on which various properties like mechanical strength, setting time and durability depends. Influence of wide range of concentrations from 6 to 16 M on these properties are studied and reported in this paper. This paper mainly concentrates on properties of readily available base materials such as Fly ash and Slag and the means to improve their performance through the use of various industrial and agro-based byproducts as additives. Problems pertaining to practical applicability of AAMs to general construction activities are also highlighted.

In this work, effective cell separation mechanism is proposed in microfluidic device with integration of three inlets out of which one is for suspension of biological cells and another two for effective hydrodynamic focusing of biological cells. The hydrodynamic focusing and its impact on cells as well as channel fluid velocity profile are examined by various designs having different auxiliary inlet angles with 150 μm s−1 auxiliary inlet velocity and 135 μm s−1 main inlet velocity. The yeast cells and the red blood cells (RBCs) modelled as nucleated spherical particles experienced forces in opposite direction with respect to each other due to positive and negative deviation of polarizing properties from the medium leading to separation with good purity. Results have shown good coordination between hydrodynamic focusing and dielectrophoresis resolving the problem associated with the poor separation of biological cells. It has been found that optimizing focusing inlets can give efficient DEP separation and maximizing the separation envelop with lower separation distance leading to miniaturized microfluidic device design with rapid isolation which can further improve the cell viability.

No abstract