Final answer:
Concrete is the correct answer, a mixture of cement, coarse and fine aggregates, and water that hardens to form a durable building material widely used in construction.
Step-by-step explanation:
The hard, strong building material made by mixing cement, coarse aggregate, fine aggregate, and water in proper proportions is called concrete. Concrete has been instrumental in construction for centuries, but it has evolved significantly over the past century, becoming more reliable and predictable. It is a mixture that typically includes lightweight coarse aggregate such as shale, clay, or slate, which contributes to properties like reduced load, facilitating faster building rates and improved thermal protection compared to traditional materials like brick.
When mixed, concrete becomes a composite material that is revered for its durability and versatility. The inclusion of cement, which acts as a binder, allows concrete to harden over time and adhere to other materials, creating structures that are strong yet capable of withstanding moderate seismic activities. Innovations in concrete, like fast-drying and bio-concrete that can self-heal cracks, further enhance its utility in modern architecture, where new forms and designs demand adaptable and resilient building materials.