What mix ratios for a concrete topping mix?

A typical concrete topping mix ratio is 1 part cement, 2 parts sand, and 3 parts aggregate, often referred to as a 1:2:3 ratio. For enhanced durability and finish, some mixes may incorporate additives like plasticizers or fibers. The water-to-cement ratio should generally be around 0.4 to 0.5, depending on the desired strength and workability. Always adjust the mix based on specific project requirements and environmental conditions.