76 



THE TESTING OF ROAD MATERIALS. 

 4BRASION TEST. 



Serial No. 

 Locality 

 Date of test 

 Made bv 



Name of material 



-. Department's coefficient of wear 

 French coefficient of wear . 



Percentage of wear 



R KM AUKS: 



RATTLER TEST OF PAYING BRICK. 



GENERAL REPORT. 

 Report of Rattler tests on sample No. of paving brick from 





Made at request of 

 Trade name of brick 

 Condition of sample 



Average loss at 1,800 revolutions, in per cent . 



Highest and lowest results obtained up to the present dateon other paving brick 



Rattler loss in per cent at revolutions . Average of 



Rattler lus> in pel-cent from 1,200-1, 800 re volutions . " 



Rattler loss in per cent at 1,800 revolutions . 



KI:M UUCS: 



Date . 



Serial No. 



Shipped from 

 Date <.f tefll 



DKT AII i:i> 

 Trade name .if brick 



Made by 



<>f Cample \\hell received . 



Size of Rattl.-r . Speed nf Kattler- K. P. M. 



Charge . Shot . 



Brick 



Size of brick 



I 



