188 



CEMENTS, LIMES, AND PLASTERS. 



TABLE 83. 

 ANALYSES OF FEEBLY HYDRAULIC LIMES. 



1. Falhagen, Germany. Pasch, analyst. 



2. Horb, Wurtemberg. Knauss, analyst. 



3. Fecamp, France. Rivot, analyst. 



4. Aberthaw, England. Quoted by Cummings. "American Cements'*, p. 35. 



5. Holywell, England. Muspratt, analyst. 



Tensile strength. In Table 84 are given the results of tests, on the 

 tensile strength of various English hydraulic-lime mortars, carried 

 out by Grant * about 1880. These tests were made on briquettes hav- 

 ing a cross-section of 1\ square inches ; but the results given in Table 84 

 have been reduced so as to give the strength in pounds per square inch. 



TABLE 84. 

 TENSILE STRENGTH OF HYDRAULIC-LIME MORTARS. (GRANT.) 



Each of the values given in this table represents the average of the 

 results on five specimens tested. All the tests were made one year 

 after the briquettes were molded. The words "wet" and "dry" refer 

 to the fact that half of the briquettes were kept in air and the other 

 half in water during the entire year. 



* Proc. Institution Civil Engineers, vol. 62, p. 165. 1880. 



