Concrete
Concrete
Concrete
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<strong>Concrete</strong><br />
Strength<br />
‣Strength Method 1 – Beams<br />
• As before (Item P-501) –<br />
sublots/lot)<br />
2t tests t per sublot t(5<br />
‣Strength th Method 2 – Compressive or Splitting<br />
Tensile Strength<br />
• Develop correlation in the<br />
lab – flexural vs. splitting<br />
tensile strengths<br />
• In the field, 3 tests t per sublot (5 sublots/lot)<br />
t)<br />
• Use correlation factor to determine lot flexural strength<br />
Note: For cylinders, 15 tests per lot – statistically more<br />
robust that current 8 tests per lot
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