ACI Concrete Field Testing Technician - Grade I Practice Exam

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What should be done if the concrete samples show significant deviation in strength?

  1. Ignore the results

  2. Recast the samples immediately

  3. Investigate the concrete mix and testing procedure

  4. Test only the higher strength samples

The correct answer is: Investigate the concrete mix and testing procedure

When concrete samples demonstrate significant deviation in strength, investigating the concrete mix and testing procedure is crucial to ensure the quality and integrity of the material. This step includes examining the ingredients used in the mix, the mixing process, the handling of the concrete, and the environmental conditions during curing. In any construction project, adherence to specified standards and practices is key to achieving desired performance outcomes. A thorough investigation can help identify issues such as incorrect water-to-cement ratios, improper mixing times, or errors in the testing process itself. By understanding the root cause of the deviation, appropriate corrective actions can be taken to prevent future occurrences, ensuring that the concrete meets the required specifications and performance criteria. Taking this action not only enhances the quality control process but also helps maintain safety and durability in the final construction product.

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