msepostdoc-list FW: Seminar Reminder for Stacey Kelly's MS Final Exam Seminar, June 16, at 1:30 in ARMS 3115. " Inverse Suspension Polymerization of Superabsorbent Polymer (SAP) Hydrogels for Internally Cured Concrete"

[Son, Rosemary E]

Reminder for Stacey Kelly's M.S. Final Seminar, tomorrow, Friday, at 1:30, in ARMS 3115.

From: Son, Rosemary E
Sent: Thursday, June 08, 2017 1:52 PM
To: 'msefaculty-list at ecn.purdue.edu' <msefaculty-list at ecn.purdue.edu>; 'msegradstudent-list at ecn.purdue.edu' <msegradstudent-list at ecn.purdue.edu>; 'msepostdoc-list at ecn.purdue.edu' <msepostdoc-list at ecn.purdue.edu>
Cc: 'Stacey L Kelly' <kelly184 at purdue.edu>; Cline, Vicki L. <vicline at purdue.edu>; Son, Rosemary E <son39 at purdue.edu>
Subject: Seminar Reminder for Stacey Kelly's MS Final Exam Seminar, June 16, at 1:30 in ARMS 3115. " Inverse Suspension Polymerization of Superabsorbent Polymer (SAP) Hydrogels for Internally Cured Concrete"


Please consider attending the following:

MATERIALS ENGINEERING
SEMINAR


"Inverse Suspension Polymerization of Superabsorbent Polymer (SAP) Hydrogels for Internally Cured Concrete"


By
Stacey L. Kelly
Purdue MSE M.S. Final Exam

Advisor: Professor Kendra A. Erk



ABSTRACT


Internal curing agents provide high performance concrete (HPC) with an internal source of hydration during hardening to mitigate shrinkage and increase strength. Superabsorbent polymer (SAP) hydrogels have proven to be effective internal curing agents because of their ability to absorb and release large amounts of water. In this study, inverse suspension polymerization is used to synthesize spherical poly(sodium-acrylate acrylamide) hydrogels and determine their impact on internally cured mortar through micro-structure analysis, autogenous shrinkage measurements and compression testing. The hydrogels were synthesized in house with two concentrations of PANa (17 and 83 wt%). SEM micrographs of cement paste segments confirmed that the hydrogels maintain their shape during mixing and the resulting voids are consistent with the hydrogel shape. Mortar containing these hydrogels showed a significant decrease in autogenous shrinkage and an increase in compressive strength compared to control mortar. This data was compared to a past study that used a solution polymerization technique to synthesize angular hydrogels. The spherical hydrogels improved cement hydration and mortar strength compared to mortar containing angular hydrogels.

Date: Friday, June 16, 2017

Time: 1:30 P.M.
Place: ARMS 3115


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