EXPANSIVE CONCRETE CURED IN PRESSURIZED WATER AT HIGH TEMPERATURE

Behaviours of expanisve concretes cured in pressurized water at high temperature (TPC curing) are investigated with regard to their variations in strain, weight and strength. These behaviours are compared with those cured by autoclave curing (AC curing) at the same pressure and temperature. The experimental data show that both of these curing methods are effective in reducing autogenous shrinkage and drying shrinkage at longer age after the curing. Particularly when TPC curing is adopted, the required expansion of concrete can be attained at smaller dosage of expansive agents, and after the curing length changes due to hygrometric or hygroscopic conditions are almost eliminated for later age. Therefore, this curing method is anticipated to be effective in introducing chemical prestress in a reinforced concrete member, which is proved by loading tests of spirally reinforced pipe specimens (Ei-i Tazawa, K Miyaguchi, in: Proceedings of the 25th JUCC Congress on Cement and Concrete, 1998, pp71-76). (A)

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    Elsevier

    The Boulevard, Langford Lane
    Kidlington, Oxford  United Kingdom  OX5 1GB
  • Authors:
    • TAZAWA, E-I
    • Kawai, K
    • MIYAGUCHI, K
  • Publication Date: 2000

Language

  • English

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Filing Info

  • Accession Number: 00793590
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Jun 15 2000 12:00AM