A concrete wall is a sturdy structure made from a mixture of cement, water, and aggregates like sand or gravel. It is commonly used in construction for buildings, fences, and retaining walls due to its durability and strength. Concrete walls can withstand harsh weather conditions and provide excellent insulation. 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 and can help reduce noise, making them a popular choice in both residential and commercial projects.