Ready-mix concrete suppliers provide a pre-mixed concrete product that is delivered to construction sites in a ready-to-use form. This concrete is made by combining cement, water, and aggregates like sand and gravel in precise proportions. The mixing occurs at a central plant, ensuring consistency and quality in the final product. These suppliers typically use specialized trucks, known as concrete mixers, to transport the ready-mix concrete to the job site. This method saves time and labor for builders, as they do not need to mix the concrete on-site. Additionally, it helps reduce waste and ensures that the concrete is fresh when it is poured.