Measuring On Site

1
Measuring On Site

• Measure where it makes engineering sense e.g.
• Third point for bulk strength
• At rebar where bond important
• In cover zone for curing

Temperature Rise
Strength
Concrete strength when assessed by lab cure
Time
2
Establishing Maturity Conversion Curve
Test Specimens Establish Strength Maturity
Relationship
Cylinders for Standard Compressive Strength Tests
Cylinders Monitored for Maturity
Strength
1day
2day
4day
7day
14day
Maturity
Cast Specimens and Cure
Prepare cylinders crush, record maturity

• Maturity to ASTM C1074

3
Intelli-Rock System

• Simple to use by foreman once conversion curve
  established

4
Maturity - On Site Process