## Civil Engineering Materials |

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If either of the requirements in criteria 3 and 4 is not met, the concrete is said to

have failed the strength requirement and to be unacceptable. 3.8.2

**Tensile**

**Strength**The

**tensile strength**of concrete should be high enough to resist

cracking from ...

For normal-weight concrete, it can be computed (in psi) as: /, = 6.7X(/;f (with

compressive strength in psi units). As can be confirmed from the equation, the

**tensile strength**of concrete increases with its capacity in compression. As a

general rule ...

18 - 16 - 14 - 12 - 10 - 8 - 6 - 4 - 2 - 0.2 J_ 0.3 0.4 0.5 Specific gravity 0.6 0.7

Figure 5.15 Increase in bending strength ...

**Tensile strength**parallel to the grain

is about two to four times the compressive strength parallel to the grain (Table 5.6

).

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