Contrary to popular belief, concrete and cement are not the same thing; cement is actually just a component of concrete. Concrete is made up of three basic components: water, aggregate (rock, sand, or gravel) and Portland cement. Cement, usually in powder form, acts as a binding agent when mixed with water and aggregates. This combination, or concrete mix, will be poured and harden into the durable material with which we are all familiar. Following is a group of articles that will be helpful when trying to understand more about concrete and cement. Other items that might be of interest to you include concrete basics such as mix design, and cement information. The cement and water form a paste that coats the aggregate and sand in the mix. The paste hardens and binds the aggregates and sand together. Water is needed to chemically react with the cement and too provide workability with the concrete. The amount of water in the mix in pounds compared with the amount of cement is called the water / cement ratio. The lower the w / c ratio, the stronger the concrete.

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