artificial cement造句

The product belongs to the category of " artificial cements " that were developed to compete with James Frost.
This cement is not, however, the same as the modern ordinary Portland cement, which can be defined as artificial cement.
In general, artificial cement is made from limestone, clay and gypsum ( natural cements are obtained from rocks containing lime and clay ).
In 1833 he became manager of John Bazeley White's cement plant at Swanscombe on the Thames Estuary which at that time was producing " Artificial Cement " and " Roman Cement ".
Proto Portland cement had a different chemical makeup from other natural cements being produced at the same time : It was burnt at a higher temperature than other Natural cements and thus crosses the barrier between traditional Vertical Kiln fired Natural cement and the later Horizontal Kiln fired Artificial cements.
It's difficult to find artificial cement in a sentence. 用artificial cement造句挺难的