Final answer:
To improve bond strength between mortar and masonry, one can control mortar composition, ensure clean and prepared surface of masonry units, and maintain adequate curing conditions for the mortar.
Step-by-step explanation:
If we want to improve bond strength between mortar and masonry units, several methods can be employed. The bond strength can be crucial in determining the durability and structural integrity of the masonry work. Here are three important factors that can be controlled:
- Mortar Composition: The ratio of cement to sand in the mortar can significantly affect bond strength. A well-proportioned mix, typically in the range of 1:3 cement to sand ratio, provides a good balance between workability and strength.
- Surface Preparation: The bonding surfaces of masonry units should be clean and free of dust, oil, or any other contaminants. Wetting the masonry units before applying mortar can also help in achieving a better bond.
- Curing Conditions: Adequate curing of mortar is essential for achieving full bond strength. Keeping the mortar damp for a certain period after application allows the cement to hydrate properly, which is vital for bond development.
By controlling these three factors, the bond strength can be significantly enhanced, leading to a more robust and durable masonry structure.