This 1925 cover image depicts a concrete mixing plant—one of three—for a vital project in downtown Chicago, in which South ...

Once your area is prepped, make sure to have some fresh water on hand or a hose to deal ... Then, press the tile face down into the sand and remove it. Pour the concrete into the impression ...

The concrete used is mixed according to the ordinary proportions of one part of cement high in lime, three parts of sand, and five parts ... On the other hand, for constructing, say a thousand ...

“Cement, concrete, paint and plasters are customarily composed of or derived from calcium- and magnesium-based minerals, which are often sourced from aggregates –– what we call san ...