FORMS FOR SPECIFICATIONS, ETC., FOR ROAD MATERIALS. 43 



(Name and location of laboratory:) 



Report on Sample of Portland Cement. 



(Date reported.) 



Laboratory No 



Brand 



., 191—. 



Identification marks 



Submitted by Title Address 



Sampled , 191 Received , 191. 



Sampled from 



Quantity represented 



Manufactured by 



Location used or to be used 



Examined for 



Remarks : 



TEST RESULTS. 



Chemical tests: 



Loss on ignition, per cent 



Insoluble residue, per cent 



Sulphuric anhydride (SO s ), per cent. 

 Magnesia (MgO), per cent 



Physical tests : 



Specific gravity 



Per cent retained on 200-mesh sieve- 

 Steam test 



Initial set 



Final set 



Gillmore Vlcat 



needle. needle. 



or 



or 



Tensile strength (1:3 Ottawa sand) : 



7 days. 28 days. 



Average: 



Respectfully submitted, 



""(Title) 



Average : 



