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In Situ Electrosynthesis of Polymethyl Methacrylate Within Ceramic Launch Pad Materials
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Author and Affiliation:
Acevedo, Raul(Puerto Rico Univ., Rio Piedras, Puerto Rico);
Cardenas, Henry(Louisiana Tech Univ., Ruston, LA, United States)
Abstract: Electrokinetic deposition of methylmethacrylate is used to mitigate corrosion in reinforced concrete. The methylmethacrylate (MMA) monomer deposits in the pores in the concrete where it is converted into its polymer, polymethylmethacrylate, thus creating a barrier that also enhances the mechanical properties of the concrete. Previous to the MMA treatment an Electrokinetic deposition is used to transport calcium, sodium and potassium hydroxide particles through the capillary pores of concrete directly to the concrete reinforcement. The intent is to use these compounds as a sacrificial electrode layer during the electrokinetic deposition of methylmethacrylate monomer. Cylindrical reinforced concrete specimens were subjected to electrokinetic treatment and the specimens were tested to characterize porosity reduction and tensile splitting strength showing an increase in the tensile strength. In addition, nine specimens treated electro-kinetically and in long-term atmospheric exposure testing at NASA's Kennedy Space Center, seaside atmospheric exposure test site were tested to determine their corrosion rate.
Publication Date: Jun 04, 2012
Document ID:
20130000814
(Acquired Jan 12, 2013)
Subject Category: COMPOSITE MATERIALS
Report/Patent Number: KSC-2012-275
Document Type: Oral/Visual Presentation
Financial Sponsor: NASA Kennedy Space Center; Cocoa Beach, FL, United States
Puerto Rico Univ.; Center for Nanoscale Materials; Rio Piedras, Puerto Rico
Organization Source: Puerto Rico Univ.; Rio Piedras, Puerto Rico
Description: 19p; In English; Original contains color illustrations
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright; Distribution as joint owner in the copyright
NASA Terms: COMPOSITE MATERIALS; CONCRETES; ELECTROCHEMICAL SYNTHESIS; ELECTROKINETICS; MECHANICAL PROPERTIES; POLYMETHYL METHACRYLATE; POROSITY; POTASSIUM HYDROXIDES; REINFORCEMENT (STRUCTURES); TENSILE STRENGTH
Miscellaneous Notes: NASA University Research Center (URC) Intern Report
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