How should a CTI respond when the measured concrete temperature exceeds the project specification?

How should a CTI respond when the measured concrete temperature exceeds the project specification?

• A. Always continue with the pour.
• B. Notify the responsible parties, document the reading, and determine if the load should be adjusted, delayed, or rejected as required.
• C. There is no action required.
• D. Increase the batch size.

Answer: (B)

When concrete temperature is out of spec, the priority is to act as a quality-control intermediary: stop and respond according to the project procedures rather than blindly continuing. The correct approach is to notify the responsible parties, document the reading, and then determine the appropriate next step—whether the load should be adjusted, delayed, or rejected as required. This ensures accountability, traceability, and adherence to the specifications designed to protect strength development and prevent issues like thermal cracking. High temperatures can accelerate hydration, alter slump and strength development, and increase the risk of cracking. By communicating with the contractor, supplier, and other stakeholders and recording the deviation, you can decide if cooling, time delays, or a refusal of the load is necessary. Actions like increasing batch size would worsen the temperature issue, and continuing without changes or taking no action would violate the spec and compromise performance.

When concrete temperature is out of spec, the priority is to act as a quality-control intermediary: stop and respond according to the project procedures rather than blindly continuing. The correct approach is to notify the responsible parties, document the reading, and then determine the appropriate next step—whether the load should be adjusted, delayed, or rejected as required. This ensures accountability, traceability, and adherence to the specifications designed to protect strength development and prevent issues like thermal cracking.

High temperatures can accelerate hydration, alter slump and strength development, and increase the risk of cracking. By communicating with the contractor, supplier, and other stakeholders and recording the deviation, you can decide if cooling, time delays, or a refusal of the load is necessary. Actions like increasing batch size would worsen the temperature issue, and continuing without changes or taking no action would violate the spec and compromise performance.