Experimental investigation of the lithium transport mechanisms in cementitious materials by NMR

S. Venglovska, L. Pel, O.C.G. Adan

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Samenvatting

Lithium hydroxide can help to reduce and control the expansion of concrete caused by Alkalisilica reaction. In new concrete structures the lithium ions can be introduced as admixture to prevent ASR deleterious expansion. In existing structures the lithium ions need to be transported into the cementitious matrix by diffusion or electromigration. In this study, NMR was applied to study lithium ion diffusion and electromigration in mortar sample. Lithium concentration profiles were measured at different times after treatments. The effective lithium diffusion coefficient was calculated using experimental data. After electromigration the concentration of ions within the specimen were analysed using an ion chromatograph (IC). The results of the present study show that NMR able to determine the lithium concentration and distribution in the pore solution in the mortar sample. The measurement technique is relatively quick and non-destructive. This capacity to define the distribution of lithium in the cement or concrete sample is suitable technique for monitoring the movement of lithium concentration within sample.

Originele taal-2Engels
TitelLife-cycle of engineering systems
Subtitelemphasis on sustainable civil infrastructure - 5th International Symposium on Life-Cycle Engineering, IALCCE 2016
RedacteurenJ. Bakker, D.M. Frangopol, K. van Breugel
UitgeverijCRC Press/Balkema
Pagina's2252-2255
Aantal pagina's4
ISBN van elektronische versie978-1-4987-7701-8
ISBN van geprinte versie9781138028470
DOI's
StatusGepubliceerd - 2017
Evenement5th International Symposium on Life-Cycle Engineering (IALCCE 2016) - Delft, Nederland
Duur: 16 okt 201619 okt 2016
Congresnummer: 5
http://www.ialcce2016.org/

Congres

Congres5th International Symposium on Life-Cycle Engineering (IALCCE 2016)
Verkorte titelIALCCE 2016
LandNederland
StadDelft
Periode16/10/1619/10/16
Internet adres

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Venglovska, S., Pel, L., & Adan, O. C. G. (2017). Experimental investigation of the lithium transport mechanisms in cementitious materials by NMR. In J. Bakker, D. M. Frangopol, & K. van Breugel (editors), Life-cycle of engineering systems: emphasis on sustainable civil infrastructure - 5th International Symposium on Life-Cycle Engineering, IALCCE 2016 (blz. 2252-2255). CRC Press/Balkema. https://doi.org/10.1201/9781315375175-331