ARMY JAN-C-99 (1)-1945 CEMENT PETTMAN《水泥 泥炭》.pdf

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1、JAN-C-97 (L) L3 H 7797706 0270753 LJ JAN-C-99 AMENDMENT-1 30 NOVEMBER 1945 JOINT ARMY-NAVY SPECIFICATION CEMENT, PETTMAN Army Number 50-1 1-8C Navy Number 52C34 B1)ecifictrtion JAN General Speciflcations (Methods for Sampling and Testing). Page 2, paragraph G2c. Delete in ita entirety. Page 2, parag

2、raph D-l. Delete the paragraph and substitute the following “D-l. Viscosity-25 to 300 seconds (see pnr. F,).” Page 3, section F. Add a new paragraph as folIows : “F4f. l*iscosity.-Use the consistency cup with the 0.15-inch orida. of the nmterial t(J be tested and the consistency cup to 25 C. Mount (

3、see fig. 1) for the viscosity determination. Adjust the temperature the cup in the support provided for the purpose and.place the receir- ing cylinder in position. Close the outlet of the cup by placing the cup until overflow OCCIIS Strike off the excess material nbove the fingeel over it, nd pour a

4、 snmple of the well mixed nlnterial into thp from the outlet and simnltnnaously start a stopwatch. When the rim of the cup by lncnns of !I straight edge. Withdraw the finger top of the meniscus of the liquid in the receiving cylinder reaches the Fio ml. of material to flow into the cylinder, ns the viscosity.” 50 ml. mark, stop the watch. liecord the time in seconds for the . 139 5 Licensed by Information Handling Services2 . (no. 187) D41667 Licensed by Information Handling Services