Concrete heating method after initial set should not exceed what temperature increase per hour?

The correct response is based on established guidelines in concrete technology regarding the proper heating methods following the initial set of concrete. It is crucial to control the temperature increase to avoid thermal stress and cracking in the concrete.

A temperature increase of more than 36 degrees Fahrenheit per hour can lead to significant risks in the quality and integrity of the concrete. When concrete is heated too quickly, it can develop thermal gradients, which cause stress due to differential expansion or contraction, leading to cracking and compromising the structural performance of the cured material.

This specified limit of 36 degrees aligns with industry standards and best practices for concrete curing, ensuring that the material achieves its designed strength and durability without introducing harmful stresses. Managing the temperature increase allows for a controlled curing environment that reduces the likelihood of defects in the finished product.