What is the Clegg Impact Test also known as?

The Clegg Impact Test is primarily associated with measuring the dynamic properties of a surface, particularly in terms of its hardness, which directly relates to how well a surface can resist deformation under an impact load. Thus, it is often referred to as a field hardness test. The emphasis of the test is to provide an immediate numeric assessment of the surface condition, which is crucial in construction and civil engineering contexts.

The reference to "12 hrs" does not appropriately describe the Clegg Impact Test, as it implies a duration rather than a characteristic or function of the test itself. The Clegg Impact Test is not defined by time but rather by its capability to evaluate hardness and surface stability quickly in the field.

Understanding the connection between the Clegg Impact Test and its role in determining surface hardness is essential for construction professionals, as it informs decisions regarding material selection and site readiness.