A procedure to make resistant to aggressive waters Portland cement or mortar or concrete prepared with Portland cement, to facilitate the setting and increase the hardness of the same and to contain the contraction.
ES111894A1
A procedure to improve the bitumen and asphalt masses, whether or not tar added.
DE369289C
Process to make mortar and cement compounds suitable for permanent, reliable execution of drainage, sealing work, hydraulic structures and similar work
GB190825637A
Improved Manufacture of Building Material capable of Serving as a Substitute for Wood and the like.
GB190824597A
A Process for Producing Transparent, Flexible, Infusible Insulating Media.
US950979A
Process for producing transparent, flexible, and infusible insulating means.
CA351646A
Hydraulic cement
CA327598A
Paving machine
CA316668A
Concrete manufacture
CA312536A
Process of improving asphalt and bitumen substances
