- importsource = "01624075-2011-05.txt"
- Artículo:
Performance-Based Requirements for Concrete 101
- Resumen:
This is the first in a series of three articles that will focus on specifying performance-based requirements for concrete. This article provides a brief history of the development of the performance-based movement, introduces the concept of specifying performance-based requirements for concrete, and discusses some of the challenges in implementing performance-based criteria for concrete
- Página:
49
- Publicación:
Concrete International
- Volúmen:
33
- Número:
5
- Periodo:
Mayo 2011
- ISSN:
01624075
- SrcID:
01624075-2011-05.txt
- Documento número 986789
- Actualizado el martes, 10 de julio de 2018 11:06:04 a. m.
- Creado el martes, 10 de julio de 2018 11:06:04 a. m.
- Enlace directo
- Artículo:
Concrete Q&A: Class F1 Exposure
- Resumen:
One of our young engineers has raised a question about the strength of the concrete required in a footing. She’s pointed out that, although our standard contract documents call for 3000 psi concrete in foundation elements, Table 4.2.1 of ACI 318-08 defines Exposure Class F1 as “Concrete exposed to freezing-and-thawing cycles and occasional exposure to moisture.”1 Table 4.3.1 effectively states that normalweight concrete in Exposure Class F1 must be produced with a minimum water-cementitious material ratio (w/cm) of 0.45 and a minimum strength of 4500 psi
- Página:
71
- Publicación:
Concrete International
- Volúmen:
33
- Número:
5
- Periodo:
Mayo 2011
- ISSN:
01624075
- SrcID:
01624075-2011-05.txt
- Documento número 986790
- Actualizado el martes, 10 de julio de 2018 11:06:04 a. m.
- Creado el martes, 10 de julio de 2018 11:06:04 a. m.
- Enlace directo
