Effect of Modified Supplementary Cementitious Material on Performance of Mortar and Concrete in Marine Environment

doi:10.1007/s12204-017-1873-x

Abstract

Abstract: This study aims to explore the durability issues regarding chloride ion corrosion of concrete structures, and further investigates the modified supplementary cementitious material (MSCM) which acts as a significant enhancer of performance of mortar and concrete. The composition of MSCM includes mineral slag powder, fly ash and inhibitor. The microstructure, sulfate erosion resistance and electric flux of high-performance concrete are tested with MSCM, and the results show that the pore structure of concrete is improved significantly along with excellent electrochemical performance. It is observed that the substantiality of concrete after being mixed with 18% (mass fraction) MSCM is enhanced effectively. The sulfate resistance coefficient of concrete is found to be greater than 1.2, and the electric flux of concrete is less than 600C. These results have demonstrated that the MSCM possesses an excellent electrochemical performance and a wide applicative prospect in marine environment.

Key words: corrosion| compressive strength| inhibitor, electric flux| durability

摘要： This study aims to explore the durability issues regarding chloride ion corrosion of concrete structures, and further investigates the modified supplementary cementitious material (MSCM) which acts as a significant enhancer of performance of mortar and concrete. The composition of MSCM includes mineral slag powder, fly ash and inhibitor. The microstructure, sulfate erosion resistance and electric flux of high-performance concrete are tested with MSCM, and the results show that the pore structure of concrete is improved significantly along with excellent electrochemical performance. It is observed that the substantiality of concrete after being mixed with 18% (mass fraction) MSCM is enhanced effectively. The sulfate resistance coefficient of concrete is found to be greater than 1.2, and the electric flux of concrete is less than 600C. These results have demonstrated that the MSCM possesses an excellent electrochemical performance and a wide applicative prospect in marine environment.

关键词: corrosion| compressive strength| inhibitor, electric flux| durability

CLC Number:

TU 50

PAN Chonggen1* (潘崇根), LING Mingfeng1 (林明峰), WEI Dong1 (魏冬),. Effect of Modified Supplementary Cementitious Material on Performance of Mortar and Concrete in Marine Environment[J]. Journal of shanghai Jiaotong University (Science), 2017, 22(5): 541-548.

References 28

[1]	MALIK A U, ANDIJANI I, AL-MOAILI F, et al.Studies on the performance of migratory corrosion inhibitorsin protection of rebar concrete in seawater environment[J]. Cement & Concrete Composites, 2004,26(3): 235-242.
[2]	JAMIL H E, SHRIRI A, BOULIF R, et al. Electrochemicalbehaviour of amino alcohol-based inhibitorsused to control corrosion of reinforcing steel [J]. ElectrochimicaActa, 2004, 49(17/18): 2753-2760.
[3]	FEDRIZZI L, AZZOLINI F, BONORA P L. The useof migrating corrosion inhibitors to repair motorways’concrete structures contaminated by chlorides [J]. Cementand Concrete Research, 2005, 35(3): 551-561.
[4]	MONTEMOR M F, SIM?OES A M P, FERREIRA MG S. Chloride-induced corrosion on reinforcing steel:From the fundamentals to the monitoring techniques[J]. Cement & Concrete Composites, 2003, 25(4/5):491-502.
[5]	KUBO J C, TANAKA Y J, PAGE C L, et al. Applicationof electrochemical organic corrosion inhibitorinjection to a carbonated reinforced concrete railwayviaduct [J]. Construction and Building Materials,2013, 39: 2-8.
[6]	QIAO H X, HE Z M, LIU C L. Investigation of improvementof concrete microstructure with auxiliarycementing materials [J]. Journal of Lanzhou Universityof Technology, 2006, 32(3): 126-129 (in Chinese).
[7]	LI D X, SHEN J L, CHEN Y M, et al. Study of propertieson fly ash-slag complex cement [J]. Cement andConcrete Research, 2000, 30(9): 1381-1387.
[8]	MANERA M, VENNESLAND ?, BERTOLINI C.Chloride threshold for rebarcorrosion in concrete withaddition of silica fume [J]. Corrosion Science, 2007,50(2): 554-560.
[9]	MANNA M. Effect of steel substrate for phosphatetreatment: An option to simulate TMT rebar surface[J]. Corrosion Science, 2009, 51: 451-457.
[10]	LANGAN B W, WENG K, WARD M A. Effect ofsilica fume and fly ash on heat of hydration of Portlandcement [J]. Cement and Concrete Research, 2002,32(7): 1045-1051.
[11]	WANG A, ZHANG C, SUN W. Fly ash effects: I. Themorphological effect of fly ash [J]. Cement and ConcreteResearch, 2003, 33(12): 2023-2029.
[12]	WEI F, GRUTZECK M W, ROY D M. The retardingeffects of fly ash upon the hydration of cement pastes:The first 24 hours [J]. Cement and Concrete Research,1985, 15(1): 174-184.
[13]	MORRIS W, VICO A, VAZQUEZ M. Chloride inducedcorrosion of reinforcing steel evaluated byconcrete resistivity measurements [J]??ElectrochemicaActa, 2004, 49(25): 4447-4453??
[14]	PAN C G, YANG X C, XU Q, et al. Developmentof corrosion inhibitor with high-performance concreteused in ocean engineering [J]. Materials Review, 2013,27(11): 97-100 (in Chinese).
[15]	IZQUIERDO D, ALONSO C, AANDRADE C, et al.Potentiostatic determination of chloride threshold valuesfor rebar depassivation: Experimental and statisticalstudy [J]. Electrochemica Acta, 2004, 49(17): 2731-2739.
[16]	OH B H, JANG S Y??Experimental investigation onthe threshold chloride concentration for corrosion initiationin reinforced concrete structures [J]. Magazineof Concrete Research, 2005, 55(2): 117-124.
[17]	FAN Z H, LI P P, SU D G, et al. Influence of cementitiousmaterial composition on durability of reinforcedconcrete [J]. Journal of South China Universityof Technology (Natural Science Edition), 2012, 40(4):85-89.
[18]	RYU H S, SINGH J K, LEE H S, et al. Effect of LiNO2inhibitor on corrosion characteristics of steel rebar insaturated Ca(OH)2 solution containing NaCl: An electrochemicalstudy [J]. Construction and Building Materials,2017, 133: 387-396.
[19]	American Society for Testing and Materials. Standardtest method for electrical indication of concrete’s abilityto resist chloride ion penetration: ASTM C1202[S]. Conshohocken, PA: American Society for Testingand Materials, 2008.
[20]	LUO X Y, LI W F, JIN X L. Effect of different admixturesand SCMs on the corrosion resistance of concretefor marine engineering [J]. Concrete, 2009 (10): 67-73(in Chinese).
[21]	LUO L, DE SCHUTTER G. Influence of corrosion inhibitorson concrete transport properties [J]. Materialsand Structures, 2008, 41: 1571-1579.
[22]	ZHOU X, YANG H, WANG F. Investigation on theinhibition behaviour of a pentaerythritol glycoside forcarbon steel in 3.5% NaCl saturated Ca(OH)2 solution[J]. Corrosion Science, 2012, 54: 193-200.
[23]	CRIADO M, MONTICELLI C, FAJARDO S, et al.Organic corrosion inhibitor mixtures for reinforcingsteel embedded in carbonated alkali-activated fly ashmortar [J]. Construction and Building Materials, 2012,35: 30-37.
[24]	RAKANTA E, ZAFEIROPOULOU T, BATIS G. Corrosionprotection of steel with DMEA-based organic[J]. Construction and Building Materials, 2013, 44:507-513.
[25]	KERN P, LANDOLT D. Adsorption of organic corrosioninhibitors on iron in the active and passive state:A replacement reaction between inhibitor and waterstudied with the rotating quartz crystal microbalance[J]. Electrochim Acta, 2001, 47: 589-598.
[26]	LENG F G, FANG N Q, LU X Y. An experimentalstudy on the properties of resistance to diffusion ofchloride ions of fly ash and blast furnace slag concrete[J]. Cement and Concrete Research, 2000, 30: 989-992.
[27]	ROY D M, ARJUNAN P, SILSBEE M R. Effect of silicafume metakaolin and low calcium fly ash on chemicalresistance of concrete [J]. Cement and ConcreteResearch, 2001, 31: 1809-1813??
[28]	PAN C G, LI Y Y, SHU D D, et al. Development ofmigrating corrosion inhibitor in reinforced concrete [J].Materials Review, 2016, 30(7): 145-150 (in Chinese).