Block Jointing Mortar is a high-performance, polymer-modified cementitious mortar designed specifically for the precise and durable joining of Autoclaved Aerated Concrete (AAC) blocks, concrete blocks, fly ash bricks, and other masonry units. Unlike traditional sand-cement mortars, it is applied in thin layers of about 2-5 mm, which reduces material consumption, speeds up construction, and improves thermal insulation by minimizing heat transfer through joints.
This mortar is composed of a carefully balanced blend of cement, graded sand, and polymers that enhance its adhesive strength, water retention, and flexibility. These properties prevent common issues such as cracking, hollowing, and spalling, which are critical when working with porous AAC blocks that have high porosity (70-80%). The polymer modification allows slight movement without cracking, ensuring long-lasting structural integrity.
Block Jointing Mortar offers superior bonding strength (adhesive tensile strength >0.41 MPa as per ASTM-C1660 standards), impact resistance, and water resistance, making it suitable for both interior and exterior applications. It is premixed and ready to use, requiring only the addition of water, which simplifies site preparation and reduces wastage.
Its thin-bed application not only saves raw materials but also reduces dead weight, leading to savings in steel and concrete reinforcement. The mortar also eliminates the need for pre-wetting blocks, further conserving water and improving efficiency on site. Overall, Block Jointing Mortar enhances masonry quality, durability, and energy efficiency, making it the preferred choice for modern construction projects involving AAC and other lightweight blocks.
This mortar is widely used in residential, commercial, and industrial construction, providing builders with a reliable, cost-effective, and environmentally friendly solution for high-quality masonry work
