Cements, Limes, and Plasters: Their Materials, Manufacture, and Properties

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J. Wiley & Sons, 1905 - 712 Seiten
 

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Seite 605 - A convenient method for cleaning the apparatus is as follows : The flask is inverted over a large vessel, preferably a glass jar, and shaken vertically until the liquid starts to flow freely; it is then held still in a vertical position until empty; the remaining traces of cement can be removed in a similar manner by pouring into the flask a small quantity of clean liquid and repeating the operation. 18. — More accurate determinations may be made with the picnometer.
Seite 11 - Pa Ra Rn Re Rh Rb Ru Sm Sc Se Si Ag Na Sr S Ta Tc Te Tb Tl Th Tm Sn Ti W U V Xe Yb Y Zn Zr...
Seite 607 - In making the determination, the same quantity of cement as will be subsequently used for each batch in making the briquettes (but not less than 500 grams...
Seite 631 - Pats of neat cement about three inches in diameter, one half inch thick at the center, and tapering to a thin edge, shall be kept in moist air for a period of twenty-four hours.

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