INDEX. 695 



Brick, sand-lime, 130-147 



slag, 675-685 

 Brick-press, for sand-lime brick, 138 



slag brick, 678, 679, 680 



Brigham, S. T., on strength of hydrated lime, 128 

 Brines, as sources of magnesia, 158, 159 

 British thermal unit defined, 12 

 Broughton mixers, 50 

 Buhrstones, 35, 239-243, 437 

 Burners, for coal, 486-489 



natural gas, 489, 490 

 Burning, see Kilns, Fuels. 



Cactus, used as plaster-retarder, 65 

 Calcination, see Calciners, Fuels, Kilns. 

 Calcined plaster, 32 

 Calciners, kettle, for plasters, 37-46 

 , oven, for plasters, 37 

 , rotary, for plasters, 46-50 

 Calcium carbonate, see Limestones. 

 Calcium chloride as retarder for cement, 546, 547 

 Calcium oxide, see Lime. 

 Calcium hydrate, see Lime, hydrated. 

 Calcium hydroxide, see Lime, hydrated. 

 Calorie defined, 12 



Campbell, E. D., on fineness of cement grinding, 424 

 Campbell kiln for natural cement, 225-228 

 Campbell lime-hydrater, 126 

 Canada, gypsum deposits, 25 



magnesite deposits, 152 

 Candlot, E., on dome kilns, 471 



Aalborg kilns, 475 

 composition of fuel-ash, 396 

 Carbon dioxide, in limestones, 97 



by-product from lime-kilns, 108 

 from magnesite, 155 

 Carbonate of calcium, see Limestone. 

 Carbonate cementing materials, 5-7 

 Carbonate of lime, see Limestone. 

 Carbonate of magnesium, see Magnesite. 

 Carbonic acid, see Carbon dioxide. 

 Carpenter, R. C., on tests of rotary kilns, 508-510 

 effects of plaster, 541 



lime chloride, 546 



Caustic-soda waste as Portland-cement material, 348-350 

 Caustic soda, used in slag cement, 659 

 Celit, in Portland-cement clinker, 568, 571, 573 

 Cementation index; calculation of, 170 



explanation of, 170, 171 



