A cement mixer is a device that homogeneously combines concrete, aggregate such as sand or gravel, and water to form cement. A typical cement mixer uses a revolving drum to mix the components. For smaller volume works portable cement mixers are often used so that the cement can be made at the construction site, giving the workers ample time to use the cement before it hardens. An alternative to a machine is mixing concrete by hand.

A cement mixer is a device that homogeneously combines concrete, aggregate such as sand or gravel, and water to form cement. A typical cement mixer uses a revolving drum to mix the components. For smaller volume works portable cement mixers are often used so that the cement can be made at the construction site, giving the workers ample time to use the cement before it hardens. An alternative to a machine is mixing concrete by hand.

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A cement mixer is a device that homogeneously combines concrete, aggregate such as sand or gravel, and water to form cement. A typical cement mixer uses a revolving drum to mix the components. For smaller volume works portable cement mixers are often used so that the cement can be made at the construction site, giving the workers ample time to use the cement before it hardens. An alternative to a machine is mixing concrete by hand.