INDEX. 709 



linings for tube mills, 459 

 Silica cement, 592-597 

 Silica, in limestones, 309-310 



Portland cement, 383, 386 

 Simple cementing materials, 3-7 

 Slag-blocks, analyses of slags used for, 689 

 , definition, 685 



, methods of manufacture, 685-689 

 , properties of, 686 



Slag-bricks, analyses of slags used for, 678, 679 

 , definition, 674 



, methods of manufacture, 674-685 

 , properties, 676-679, 683 

 Slag cement, color of, 669 



, composition of slags used, 641-644 



, costs of manufacture, 663-664 



, methods of manufacture, 641, 645-665 



production of, 664 

 , properties and tests, 666-671 

 , specific gravity, 668-669 

 , specifications for, 672-674 

 , tensile strength, 670 

 , see also Puzzolan cements. 

 Slags, used in Portland-cement manufacture, analyses, 352 



, methods, 411-415 

 slag-cement manufacture, analyses, 643 



, composition, 641-644 

 , drying, 649-652 

 , granulation, 644-648 

 , methods of use, 645-665 

 Slaked lime, see Lime hydrate. 

 Slaking lime, 120-122, 126 



natural-cement clinker, 235-236 

 Slate, analyses of, 364-365 

 , distribution of, 363-364 

 , origin of, 363 



, used as Portland-cement material, 363-366 



Slosson and Moudy, on accelerators and retarders for plasters, 65-67 

 temperature of plaster burning, 43-44 

 tests of plasters, 61-62 

 Smidth ball mill, 516 

 Soda, used as slag-cement accelerators, 659 



, see Alkalies. 

 Sorel stone, 9, 162-167 

 Specifications for natural cement, 276-284 

 Portland cement, 614-631 

 puzzolan cement, 672-674 

 slag cement, 672-674 

 Specific gravity, method of determining, 605-606 



