The mortar mix ratio for brick masonry typically depends on the purpose and type of structure. The most common mortar mix ratios used in brick masonry are:

1. 1:6 (Cement: Sand) – This is the standard mix used for general brickwork, suitable for non-load-bearing walls or light-duty constructions.

2. 1:4 (Cement: Sand) – This mix is used for masonry where extra strength and durability are required, often for load-bearing walls.

3. 1:3 (Cement: Sand) – A stronger mix, used for external walls, where resistance to weathering is important.

*General Mortar Mix Ratios in Brick Masonry*:
1:6 (Cement: Sand) – General brick masonry.
1:5 (Cement: Sand) – Moderate strength.
1:4 (Cement: Sand) – Higher strength, used for foundations or structural elements.

If you're asking about the ratio of brick to mortar or how much mortar is required in brick masonry, it generally depends on:
The type and size of the brick.
The thickness of the mortar joint (typically 10mm or 12mm).

*Note on Mortar Mix Preparation*:
*Cement*: Provides strength and binds the bricks together.
*Sand*: Acts as a filler and gives workability to the mix.
*Water*: Activates the cement to form a strong bond.