What is the required mixing ratio of mortar for Item 505?

The correct mixing ratio of mortar for Item 505 is established to ensure optimal strength and workability of the mortar, which is crucial for masonry work. A mixture of 1 part cement to 2 parts sand provides a balance that achieves good bonding while maintaining sufficient workability. This ratio effectively offers the right amount of binding agent (the cement) to the aggregates (the sand), ensuring the mortar can properly adhere to the masonry units it is intended to bind and provide the necessary support to the structure.

Additionally, this ratio has been widely accepted in the industry for standard mortar applications, making it a go-to guideline for professionals. The inclusion of water is also important, but its amount should be adjusted based on specific conditions and desired consistency, rather than being fixed in the ratio itself. Using this optimal blend contributes to the durability and longevity of masonry joints, which is crucial in construction projects.