186 



CEMENTS, LIMES, AND PLASTERS. 



TABLE 81. 

 TESTS OF TENSILE STRENGTH, LAFARGE CEMENT. (McKENNA.) 



These results have been plotted diagrammatically, as shown in 

 Fig. 29. 



TOO 



600 



400 



300 



2 65 



i I 



a a S 



!- 00 



FIG. 29. Tensile strength of Lafarge (grappier) cement. 



