Mortar is a type of building material used to bind bricks or stones together in construction. It is typically a mixture of cement, sand, and water, and is applied between bricks or stones to create a strong and durable bond. Mortar plays a crucial role in the structural integrity of buildings, providing stability and support for the overall structure. Researchers in this area may focus on developing new formulations of mortar, optimizing its performance, studying its properties, or exploring innovative applications in construction. They may also investigate the environmental impact of mortar production and work on developing more sustainable alternatives.