Red Seal Concrete Finisher Practice Exam

What happens if you do not work the surface of freshly placed concrete properly?

1. The concrete will set too quickly

2. The final surface may become weak

3. The color will not adhere

4. The temperature will rise significantly

The correct answer is: The final surface may become weak

If the surface of freshly placed concrete is not worked properly, it can lead to a weak final surface. Proper finishing techniques, such as smoothing, floating, and troweling, are essential for the development of a strong and durable concrete surface. When the surface is not adequately finished, defects like segregation, honeycombing, or improper hydration can occur, which weakens the overall integrity of the concrete. Inadequately finished concrete may also result in an uneven surface texture, leading to reduced durability and higher susceptibility to damage from environmental factors, such as freeze-thaw cycles or chemical exposure. Therefore, ensuring the right finishing practices are followed is crucial for achieving a strong and reliable concrete surface that will stand the test of time.