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Incidencia de los aditivos antilavado en los hormigones puestos en obra bajo el agua (hormigones sumergidos)

Author(s):
Medium: journal article
Language(s): Spanish
Published in: Hormigón y acero, , n. 247, v. 59
Page(s): 89-98
Abstract:

Effect of anti-washout admixtures in underwater concrete

The present paper describes the results of experimental research on the effect of anti-washout admixtures on concrete properties, conducted at the Intemac Central Laboratory for the author?s (*) PhD thesis. According to these findings, acceptable effectiveness calls for a cement dose on the order of 400 kg/m³ and an admixture content of at least 2% by cement weight. These conditions guarantee concrete compressive strength of at least 20 to 25 MPa, even in the event of moderate concrete contact with the water during placement. One particularly relevant result was the drop observed in the concrete-steel bond, which may necessitate anchorage and lapping lengths substantially longer than specified in the EHE Code, depending on bar diameter, or the substitution of mechanical anchorage for bonded anchorage or lapping.

Keywords:
Underwater concrete admixture submerged concrete washout segregation submerged joints steel-concrete bond
Available from: ACHE - Asociación Española de Ingeniería Estructural
Structurae cannot make the full text of this publication available at this time.
  • About this
    data sheet
  • Reference-ID
    10075625
  • Published on:
    11/10/2018
  • Last updated on:
    11/10/2018
 
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