What is Guniting in relation to concrete?

Guniting refers specifically to the method of spraying shotcrete, which is a type of concrete, onto a surface at high velocity. This technique is often used in construction and repair projects to build strong, durable surfaces and structures. The process involves using a pneumatic spray system to project the shotcrete, which allows for efficient application and provides a strong bond to the substrate.

In various applications, guniting is advantageous for its flexibility in shaping and forming concrete structures, as well as for its rapid application over large areas. Because of the pressure involved in the spraying process, guniting can also help ensure that the concrete adheres well to the underlying surface, reducing the risk of delamination and other bonding issues.

Other choices do not accurately reflect the nature of guniting. A method of mixing concrete refers to preparations before any application, not the spraying technique itself. Surveying concrete structures relates to assessment and evaluation processes, which are distinct from the application methods. Removing concrete defects involves remediation techniques, not the direct application of new concrete materials. Thus, the answer C encapsulates the core definition of guniting accurately as related to concrete.