1. importsource = "01624075-2010-05.txt"
Se encontraron 12 resultados.
Artículo:

Rapid Chloride Permeability Testing

Autor:

Casimir J. Bognacki

Marco Pirozzi

Joseph Marsano

William C. Baumann

Resumen:

With the increased use of performance-based specifications, it’s important to have acceptance tests that correlate with performance criteria. Many state departments of transportation have developed high-performance concrete mixtures to produce bridge decks with a low permeability to chloride ions. In many instances, though, prescriptive compressive strength, air content, and slump tests are used for acceptance testing. Based on the Port Authority of New York and New Jersey’s field data, the authors’ experience is that the rapid chloride permeability test (AASHTO T277 or ASTM C1202-07) is a good indicator of chloride permeability with reproducible results. By using the RCP test for mixture design and quality acceptance, it would provide concrete with the properties that are required in service.

Página:

47

Publicación:

Concrete International

Volúmen:

32

Número:

5

Periodo:

Mayo 2010

ISSN:

01624075

SrcID:

01624075-2010-05.txt

  • Documento número 986675
  • Actualizado el martes, 10 de julio de 2018 11:06:03 a. m.
  • Creado el martes, 10 de julio de 2018 11:06:03 a. m.
  • Enlace directo
Artículo:

Verifying Well Water Quality

Resumen:

I’m a civil engineer with an energy development company. One of our projects in Colorado will require a concrete batch plant in a remote area. We are considering using well water for the mixtures, but we know the water is not potable. According to ACI 318-08, Section 3.4.2,1 “Mixing water for prestressed concrete or for concrete that will contain aluminum embedments, including that portion of mixing water contributed in the form of free moisture on aggregates, shall not contain deleterious amounts of chloride ion.

Página:

71

Publicación:

Concrete International

Volúmen:

32

Número:

5

Periodo:

Mayo 2010

ISSN:

01624075

SrcID:

01624075-2010-05.txt

  • Documento número 986676
  • Actualizado el martes, 10 de julio de 2018 11:06:03 a. m.
  • Creado el martes, 10 de julio de 2018 11:06:03 a. m.
  • Enlace directo