and silica sand. These “ingredients” are heated to a very high temperature to create a rock-like substance that is ground into an extremely fine powder called cement. (Cement is then mixed ...

This study on green compression-cast concrete reveals significant strength improvements and lower carbon emissions, paving ...

Weeds have a way of sprouting up through the tiniest of cracks, making it difficult to keep them out of the gaps between ...

When ground to a fine powder, this is the cement you buy in a bag at the hardware store. Later, when mixed with water, the ...

By absorbing nitroglycerin into silica-rich clay, it “created kind of a putty ... (Beth LaBerge/KQED) After the disaster, Giant Powder Company moved to the sand dunes near what is now Golden Gate Park ...

Behold one of the world’s greatest slag heaps: A towering landfill piled sky high with the leftovers from the Industrial Revolution. Not a postcard, to be honest. It is an eyesore, hidden under a bit ...

The flue enamels of trade are generally prepared by fusing at high temperatures, silica ... powder: Oxide of cobalt, 10 parts by weight; black oxide of iron, 90 parts ; red lead, 100 parts; Sand ...

A research team led by Dr. Hyung-Suk Oh and Dr. Woong Hee Lee at the Clean Energy Research Center at Korea Institute of ...