Temperature Rise Peak temp. profile Strength required to stop curing 7day curing typical for GPC concrete is reduced to 1-3days Strength required to support.

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Presentation transcript:

Temperature Rise Peak temp. profile Strength required to stop curing 7day curing typical for GPC concrete is reduced to 1-3days Strength required to support load 4day form retention typical for GPC concrete is reduced to <1day Concrete strength when assessed by lab cure Record avg maturity/ strength in bulk Record avg maturity/ strength in cover zone Strength Time 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

Cast Specimens and CurePrepare cylinders & crush, record maturity Maturity Strength Test Specimens & Establish Strength Maturity Relationship Cylinders for Standard Compressive Strength Tests Cylinders Monitored for Maturity 1day 2day 4day 7day 14day Establishing Maturity Conversion Curve  Maturity to ASTM C1074

Intelli-Rock System  Simple to use by foreman once conversion curve established

Logger automatically logs temperature history and calculates current maturity Two-wire communications between logger and reader to down load tamper proof file Connect to view and down load data to reader as required. Download reader to computer. Cutaway view of concrete structure. Logger embedded where strength required Maturity - On Site Process