“Like sand on the sea”
Why is such extensive work with sand necessary? After all, one might think sand is a commodity that is available in abundance. But not all sand is the same. Decisive for its suitability as a raw material in autoclaved aerated concrete or CSU production is the original rock from which the sand was formed, as well as interfering substances such as clays, peats or coals that may be contained in it. Large accumulations of sand are formed because of geological processes that have lasted for hundreds, if not thousands, of years. Depending on the conditions in these sand deposits, the quality of the sand may also vary. Therefore, it is important to thoroughly test the composition of a sand deposit.