ABOUT THE INTERNATIONAL CONCRETE ABSTRACTS PORTAL

  • The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

International Concrete Abstracts Portal

  


Title: Effect of anti-washout admixtures in underwater concrete

Author(s): Sanz Pérez, L.

Publication: ACHE

Volume: 59

Issue: 247

Appears on pages(s): 89 - 98

Keywords: Admixture, submerged concrete, washout, segregation, submerged joints, steel-concrete bond.

DOI:

Date: 1/1/2008

Abstract:
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.


ACI International Partner, ACHE Spain, International Partner Access

View Resource »