During the last decade or so, concrete mixes have been developed with higher and higher strengths.
The Romans had pozzolans, in the form of volcanic ash, long before anyone else.
Erlin and Hime catalog some of the lesser-known -- but equally significant -- evils of the concrete industry.
Sometimes color provides an esthetic emotion like the specialty “warm tone” portland cements of some years ago and today's proprietary colored mortar cements. Today, there are pigments of all sorts—mineral and chemical—and colored concrete is becoming mor
"In this phenomenon, there are no chemical reactions involving any sulfate salt with any component of the concrete. It stands alone and is its own worst enemy. It needs no help from anyone or anything, except ambient temperature and humidity."
