COMPOSITION AND PROPERTIES OF NATURAL CEMENTS. 273 



TABLE 130. 

 EFFECT OF SAND ON TENSILE STRENGTH OF NATURAL CEMENT. (SABIN.) 



Tensile strength Ibs. per sq. in. 



Neat Cement 



1 Cement: 1 Sand. 



1 Cement: 2 Sand. 



1 Cement: 3 Sand. 



1 Cement: 4 Sand. 



,1 Cement: 5 Sand. 



1 Cement* 6 Sand. 



1 Cement: 7 Sand. 



1 Cement: 8 Sand 



8 



FIG. 61. Effect of sand on tensile strength of natural cement. (Sabin.) 



