Cement 



Danube Sand 



Egginge Sand 



Broken Stone 



Danube Shingle 



Proportions of 

 Ingredients 

 in Test 1' lores 





HMMMMMMM 



Value Given by Prof. 

 Bach for 



1 



(=_-p.. 



^i go to o> o '-i bo '-i 

 o 5> 01 t ^ - <o o 



