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Received September 29, 2009
Accepted November 24, 2009
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Physico-chemical changes in polymer impregnated mortars on exposure to sea water
Department of Chemical Engineering, Hanbat National University, Daejeon 305-719, Korea 1Kyong Dong Engineering Co. Limited, 1107 Bisan-dong, Dongan-gu, Anyang-si, Gyeonggi-do 431-050, Korea
wmlee@hanbat.ac.kr
Korean Journal of Chemical Engineering, July 2010, 27(4), 1323-1327(5), 10.1007/s11814-010-0192-9
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Abstract
This paper highlights the results and interpretations of experiments conducted to analyze the effect of sea water on conventional precast cement mortar (OPC) and polymer impregnated mortars (PIC). The precast cement mortars were impregnated with a mixture of methyl methacrylate and 2, 2'-Azobisisobutyronitrile (AIBN) initiator and polymerized using two different procedures: by microwaves and by conventional hot water method. The OPC and PIC specimens were immersed in sea water separately for 7, 14, 21 and 28 days and their strength parameters were calculated. The changes in the microstructure indicated movement of ions into the cement matrix and the presence of fan-like crystals on the surface of cement mortar. The protective polymer coating in the PIC prevented contact of sea water with cement concrete, thereby increasing the durability of the composite.
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Conjeaud ML, ACI Special Publish, SP-65-3, 39-62 (1980)
Moukwa M, Cem. Conc. Res., 25, 439 (1999)
Shannag MJ, Shaia HA, Cem. Conc. Comp., 25, 363 (2003)
Backstrom JE, Dikeou JT, Desalination., 9, 97 (1971)
Ohama Y, Chandra S, Polymers in concrete.
KS L 5105: Testing method for compressive strength of hydraulic cement mortar.
KS F 2476:2007: Test methods for polymer modified mortars.
KS F 2456:2007: Test method for resistance of concrete to rapid freezing and thawing.
ASTM C 267:2001 Standard test methods for chemical resistance of mortars, grouts and monolithic surface and polymer concretes.
Auskern A, Horn W, J.Am. Ceram. Soc., 54, 282 (1971)
Narayanswamy R, J. Mat. Sci., 14, 1521 (1979)
Moukwa M, Cem. Conc. Res., 20, 439 (1990)
Regourd M, ACI Special Publish, SP 65-4, 63 (1980)
Bader AM, Cem. Conc. Comp., 25, 539 (2003)
Ohama Y, Chandra S, Polymers in concrete., 4th chapter, CRC Press (1994)
