Civil Engineering Reference
In-Depth Information
Compressive Strength
The minimum design 28-day concrete cylinder compressive strength
f'c is 5,000 psi, with 6,000 to 12,000 psi strength being more common. The
compressive strength of concrete is determined in accordance to ASTM
C39 (ASTM 2004).
Stress-Strain Behavior
A typical stress-strain curve for concrete in compression is shown in
Fig. 3.1.
Prestressing Steel
Prestressed concrete poles are typically reinforced with either uncoated,
stress relieved steel wire (ASTM [2010c], grade 250 or 270) or uncoated
Fig. 3-1. Typical compressive stress-strain curves of concrete
Source: Illustration courtesy of University of Alabama at Birmingham.
Reproduced with permission.
Search WWH ::
Custom Search