...mill, komminuter, or whatever mill is in use for preliminary grinding. Adding it at this point secures much more thorough mixing and pulverizing than if the mixture were made later in the process. At seme of the few plants which use plaster instead of gypsum, the finely ground plaster is not added...

...water. In Portland-cement manufacture either gypsum or burned plaster may be used to retard the set of the cement, but gypsum is universally employed...INTRODUCTION. In this part of the bulletin the States are taken up in alphabetical order and the available Portland-cement materials of each State are described,...

...of the gypsum to the clinker is usually made before it has passed into the ball mill, comminute r , or whatever mill is in use for preliminary grinding....INTRODUCTION. In this part of the bulletin the States are taken up in alphabetical order and the available Portland -cement materials of each State are described,...

...mill, kommlnuter or whatever mill ls»ln use for preliminary grinding. Adding it at this point secures much more thorough mixing and pulverizing than if...final grinding and Is ready for storage or packing. CONCRETE WORK IN CUBA AND YUCATAN. By CE McDowell, Neivark, NJ Concrete construction of buildings in...

...mill, komminuter, or whatever mill is in use for preliminary grinding. Adding it at this point secures much more thorough mixing and pulverizing than if the mixture were made later in the process. At seme of the few plants which use plaster instead of gypsum, the finely ground plaster is not added...

...water. In Portland-cement manufacture either gypsum or burned plaster may be used to retard the set of the cement, but gypsum is universally employed...INTRODUCTION. In this part of the bulletin the States are taken up in alphabetical order and the available Portland-cement materials of each State are described,...

...mill, kominuter, or whatever mill is in use for preliminary grinding. Adding it at this point secures much more thorough mixing and pulverizing than if...final grinding and is ready for storage or packing. Analyses of gypsum used. — The following analyses will serve to illustrate the composition of the...

...mill, komminuter, or whatever mill is in use for preliminary grinding. Adding it at this point secures much more thorough mixing and pulverizing than if...final grinding and is ready for storage or packing. Constitution of Portland Cement. During recent years much attention has been paid by various investigators...

...mill, kominuter, or whatever mill is in use for preliminary grinding. Adding it at this point secures much more thorough mixing and pulverizing than if...plaster instead of -gypsum, the finely ground plaster i.-; not added until the clinker has received its final grinding and is ready for storage or packing....

...mill, kominuter, or whatever mill is in use For preliminary grinding. Adding it at this point secures much more thorough mixing and pulverizing than if...At some of the few plants which use plaster instead rf gypsum, the finely ground plaster is not added until the clinker has received its final grinding...