What is an essential characteristic of masonry grout?

Masonry grout is known for its essential characteristic of high bond strength, which is crucial in ensuring stability and durability in masonry construction. This strong bond helps to secure masonry units in place, providing structural integrity and resistance against various forces, such as those resulting from weather or physical stress. High bond strength also contributes to the overall longevity of the constructed features, ensuring that they maintain their performance and appearance over time.

Other characteristics typically attributed to masonry grout might include adequate flowability necessary for filling voids and achieving a cohesive structure, but this does not define it as a primary characteristic. Similarly, while permeability can vary, a high permeability would not align with the functional requirements of grout, as lower permeability is generally preferred to prevent water infiltration and protect the integrity of the masonry. Inhibitory properties indicating resistance to mold or decay might be beneficial but are not fundamental to the grout's defining characteristics as related to its role in construction. Overall, high bond strength is what distinguishes masonry grout in its primary application within construction contexts.