LABORATORY STUDY OF LIOH IN INHIBITING ALKALI-SILICA REACTION AT 20 DEG C: A CONTRIBUTION

Alkali-aggregate reaction (AAR), whose main type is alkali-silica reaction (ASR), is one of the factors that cause concrete to lose its durability, lose its usable value too early, and cut short its service life. This article reports on a study of the inhibiting factor of LiOH at 20 deg C. The authors studied alkali-aggregate reaction (AAR) expansion of mortar incorporating zeolitization perlite. Results showed that the AAR could be effectively inhibited in the long term by LiOH. This effect increased with the augment of Li/(Na+K) molar ratio. However, mortar strength decreases when LiOH is added. The more LiOH was added, the more the strength would decrease. In addition, there was more effect on strength at 28 days than at 3 days. The LiOH had a greater impact on compressive strength than on flexural strength. Both the initial and final setting times of cement of cement were shortened by adding LiOH; the more Li/(Na+K) molar ratio of LiOH was added, the more the setting time was cut down.

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  • Corporate Authors:

    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • Mo, Xiangyin
  • Publication Date: 2005-3

Language

  • English

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  • Accession Number: 00989006
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Apr 29 2005 12:00AM