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The Effects of the Coplymerization Conditions in Synthesis of Polycarboxylic Type Superplasticizer on Interfacial Properties and on Cement Mortar Fluidity  

Kim, Young-Ho (Division of Chemical Engineering, Hankyong National University)
Publication Information
Applied Chemistry for Engineering / v.21, no.4, 2010 , pp. 463-468 More about this Journal
Abstract
The polycarboxylic (PC) type concrete superplasticizer was synthesized. The effects of ethylene oxide group number and its molecular weight on the properties of the polycarboxylic type concrete superplasticizer and the concrete motar properties were studied. To investigated of the interfacial properties of the premixed-concrete with the superplasticizer, the type and the amount of polyethylene glycol, meta acrylate added, and type of the initialization agent were studied. Also the interfacial properties of the superplasticizer aqueous phase, the wettability on the cement particle, the fluidity of the cement mortar, and the strength properties of the concrete were measured. For a high fluidity of the cement mortar and a high strength of concrete, a low value of the surface tension and contact angle were required for PC. To have a good performance for PC, the reaction condition of 1.3 mol ratio of MA against to MPEG was suitable with KSP initiator.
Keywords
superplasticizer; polycarboxylic acid; cement; concrete;
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