Concrete walls are sturdy structures made from a mixture of cement, water, and aggregates like sand or gravel. They are commonly used in buildings, bridges, and other constructions due to their strength and durability. Concrete walls can withstand harsh weather conditions and provide excellent insulation against noise and temperature changes. These walls can be poured in place or precast in a factory and then transported to the construction site. They are often reinforced with steel bars, known as rebar, to enhance their structural integrity. Additionally, concrete walls can be finished with various textures and colors to improve their aesthetic appeal.