Marble is actually limestone made from metamorphosed calcite which has been subjected to high pressure and high temperature. ...

Yet several studies have shown that small quantities of CO 2 later reabsorb into concrete, even decades after it is emplaced, when elements of the material combine with CO 2 to form calcite.

Concrete is arguably the most important manufactured ... which the microscopic bugs convert to calcite, a form of calcium carbonate that serves as biocement. In the current setup, light-emitting ...

When the concrete cracks, air and moisture trigger the bacteria to begin munching on the calcium lactate. They convert the calcium lactate to calcite, an ingredient in limestone, thus sealing off ...

Masic et al. found evidence of calcite-filled cracks in other samples of Roman concrete, supporting their hypothesis. They also created concrete samples in the lab with a hot mixing process, ...

Calcite is a common mineral, a form of calcium carbonate, similar in basic chemical composition to chalk and gypsum and the basic material for cement. There are at least 800 different forms of ...