msepostdoc-list Seminar Notice for Baishakhi Bose's Preliminary Exam. Seminar, Monday Dec. 3, in ARMS 1028, at 2:30 p.m. Review, Tuesday, Dec. 4, in WANG 4062, Exam, Tuesday, Dec. 4, in WANG 4062

[Son, Rosemary E]

Please consider attending the following:

MATERIALS ENGINEERING
SEMINAR



"Structure-Property Relationship of Shrinkage Reducing Admixtures in Cementitious Composites and their Interactions with Superabsorbent Polymers"

By
Baishakhi Bose
Purdue MSE Ph.D. Preliminary Exam

Advisor: Professor Kendra A. Erk

ABSTRACT


With the advents of technology, the use of high-performance concrete (HPC) has ensured greater  durability  and  strength  of  concrete  infrastructures.  However,  HPC  is  susceptible  to autogenous  shrinkage which  can  lead  to  cracking  and  eventual  collapse.  Shrinkage reducing admixtures (SRA) and superabsorbent polymers (SAP) have both been used in the past to mitigate shrinkage.  However,  dosing  the  concrete  with  these  admixtures  introduces  issues  related  to mechanical and durability-related properties of the concrete. This proposal aims to understand the effect changing the hydrophobic or hydrophilic characteristics of surfactants on their performance as SRAs. The effect of altering the molecular structure of the surfactants on the cement hydration and durability characteristics will be studied. Also, a methodological investigation of synthesized poly  (acrylic  acid-acrylamide)  hydrogels'  interaction  with  the  surfactants  in the  cementitious systems is proposed in this study. The outcomes of this study will aid in identifying the structure property relationship of model SRAs and their synergistic interactions with SAP in cementitious composites.

Keywords: shrinkage reducing admixtures, superabsorbent polymers, surfactants




Date: Monday, December 3, 2018

Time: 2:30 P.M.

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