PROPERTIES OF PORTLAND CEMENT. PART III. 223 



Penetration of, the set needle in millimeters. 





Time in 



Brand. 





min- 











1 





utes. 



0.' 



K.» 



L.« 



o,." 



0,.«f 



Oi.'f 





10 



40 



40 



40 



40 



40 



40 





20 



40 



40 



40 



40 



40 



40 





30 



40 



40 



40 



40 



40 



40 





40 



40 



40 



40 



40 



40 



40 





50 



40 



40 



40 



40 



40 



36 



1 



60 



40 



40 



40 



40 



40 



39 





70 



40 



40 



40 



40 



39 



38 





80 



40 



40 



40 



40 



35 



34 





90 



40 



40 



40 



40 



36 



35 





100 



40 



40 



40 



40 



34 



34 





110 



40 



40 



40 



34 



32 



28 



2 



120 



39 



40 



40 



35 



28 



35 





130 



38 



40 



40 



35 



28 



34 





140 



37 



40 



40 



37 



30 



35 





150 



34 



40 



40 



37 



31 



32 





160 



31 



40 



40 



38 



27 



29 





170 



34 



40 



40 



37 



29 



31 



3 



180 



31 



38 



40 



36 



28 



30 





190 



25 



40 



40 



36 



28 



29 





200 



19 



36 



40 



34 



29 



30 





210 



19 



36 



40 



33 



29 



27 





220 



6 



36 



40 



29 



28 



27 





230 



4 



35 



40 



34 



27 



26 



4 



240 



3 



36 



40 



32 



26 



24 





250 



2 



35 



36 



31 



25 



23 





260 



1 



32 



37 



29 



25 



23 





270 



1 



28 



35 



29 



25 



22 





380 



1 



25 



30 



28 



24 



20 





290 



0.5 



25 



24 



28 



22 



16 



5 



300 



0.5 



23 



20 



28 



21 



19 





310 



0.5 



22 



15 



27 



20 



16 





320 



0.6 



17 



7 



27 



18 



l3 





330 





14 



1 



26 



8 



10 





340 





13 



1 



25 



7 



10 





350 





12 



1 



25 



5 



9 



6 



360 







11 



0.5 



24 



2 



9 





370 





8 



0.5 



21 



2 



7 





380 





4 





5 



2 



7 





390 





3 





3 



1 



5 





400 





2 





2 



1 



3 





410 





1 





2 



1 



3 



7 



420 





0.5 





2 





3 



* Final set about 6 hours. 

 •> Final set about 8 hours. 



"= Final set about 6.30 hours, 

 "•l: 1 : 1: 1: 1: 0.5. 



• Not set in 8 hours. 



' Gauge according to the United States Army cement specifications of 1902. 

 « Cement Oi, reground. 



