OCR Text |
Show u Perfection of Cement. In Germany puzzuoiani cement Is now a well recognized trado product, with a good reputation for Its properties proper-ties of strength and hardness. This cement Is produced by grinding and thoroughly mixing 85 per cent granu-ated granu-ated slag with 15 per cent of lime hydrate. Slag has also been employed In Germany largely by tho Portland cement manufacturers as a substitute for marl and limestone, and the claims that cement made with this addition Is stronger than tho ordinary cement havo now been recognized by eminent authorities. London Engineer. |