ACI Concrete Field Testing Technician - Grade I Practice Exam

Field Curing is utilized for assessing which of the following?

1. Determination of mix proportions

2. Acceptance of structural testing

3. Strength of shapes and weaknesses

4. Capability of the structure to be put into service

The correct answer is: Capability of the structure to be put into service

Field curing is an essential practice used to evaluate how concrete behaves under real-world conditions. The purpose of field curing is to create a controlled environment that reflects the actual conditions the concrete will face in service. By observing the performance of field-cured specimens, one can gain insight into the strength and durability of the concrete. In the context of determining whether a structure can be safely put into service after concrete placement, field curing provides practical evidence of how that concrete will perform over time. It helps in assessing whether the concrete has developed the necessary strength to support the intended loads, ensuring that it is safe for use. This direct relation between field curing and the readiness of the structure underscores why this option is the most relevant. Other choices would not be applicable because mix proportions relate to design specifications rather than structural readiness, acceptance of structural testing pertains to compliance with codes rather than real-time performance, and while assessing the strength of shapes and weaknesses could theoretically connect to various aspects of concrete performance, it doesn’t specifically measure the readiness for service which is ultimately the focus of field curing.