Influence of lithium hydroxide on alkali-silica reaction

Journal Article · Thu Apr 15 04:00:00 EDT 2010 · Cement and Concrete Research

DOI:https://doi.org/10.1016/j.cemconres.2009.08.019· OSTI ID:21344753

Bulteel, D ^[1]; Garcia-Diaz, E; Degrugilliers, P ^[1]

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1. Univ Lille Nord de France, F-59000 Lille (France)

Several papers show that the use of lithium limits the development of alkali-silica reaction (ASR) in concrete. The aim of this study is to improve the understanding of lithium's role on the alteration mechanism of ASR. The approach used is a chemical method which allowed a quantitative measurement of the specific degree of reaction of ASR. The chemical concrete sub-system used, called model reactor, is composed of the main ASR reagents: reactive aggregate, portlandite and alkaline solution. Different reaction degrees are measured and compared for different alkaline solutions: NaOH, KOH and LiOH. Alteration by ASR is observed with the same reaction degrees in the presence of NaOH and KOH, accompanied by the consumption of hydroxyl concentration. On the other hand with LiOH, ASR is very limited. Reaction degree values evolve little and the hydroxyl concentration remains about stable. These observations demonstrate that lithium ions have an inhibitor role on ASR.

• OSTI ID: 21344753
• Journal Information: Cement and Concrete Research, Journal Name: Cement and Concrete Research Journal Issue: 4 Vol. 40; ISSN 0008-8846; ISSN CCNRAI
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALKALI METAL COMPOUNDS
BUILDING MATERIALS
CHARGED PARTICLES
CONCRETES
DISPERSIONS
HOMOGENEOUS MIXTURES
HYDROGEN COMPOUNDS
HYDROXIDES
IONS
LITHIUM COMPOUNDS
LITHIUM HYDROXIDES
LITHIUM IONS
MATERIALS
MINERALS
MIXTURES
OXIDE MINERALS
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM HYDROXIDES
REAGENTS
SILICA
SODIUM COMPOUNDS
SODIUM HYDROXIDES
SOLUTIONS