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 into molds or constructed using precast panels. They are often reinforced with steel bars, known as rebar, to enhance their strength. Concrete walls are also fire-resistant, making them a safe choice for many types of construction projects.