Which combination of records should CTI maintain for quality control?

• A. Temperature log only
• B. Load tickets, slump, temperature, air content, calibration records, and deviations or corrective actions
• C. Customer communications only
• D. Weather data only

Answer: (B)

Quality control depends on thorough, traceable records that show how each batch of concrete was produced, tested, and delivered. The best practice is to keep a comprehensive set of records that covers both the material properties and the processes that ensure those properties meet specification. This includes the load ticket (which ties the batch to the truck, time, and location), slump (workability), temperature (heat management and potential effects on set), air content (durability-related property), calibration records (proof that scales and testing equipment are accurate), and deviations or corrective actions (documenting any departures from specs and how they were handled). Together, these items provide a complete, auditable trail showing that the concrete delivered meets the design and quality requirements and that any issues were properly addressed.

Relying only on a temperature log misses critical aspects of quality—workability, air content, and traceability—while weather data or customer communications alone do not establish the material properties or how deviations were resolved.