700 



S 500 



400 



I 300 



100 



-00008 '00016 -00024 -00032 "0004 '00048 '00056 '00064 00072 "0008 

 Extensions in inches. 

 Fig. 7 — Tensile Tests of Mortar Briquettes, containing steel bars, half 

 inch diameter. Age 28 days. 



No. 1 — One Hemmoor cement to three Emu Plains sand; five bars. 

 » 2 — „ „ „ „ „ four „ 



t, 3 — ,, „ ,, ,, ,, four „ 



„ 4— ,, „ „ „ „ one „ 



700 



500 



2. 300 



§ 200 

 t-3 



100 











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-00008 -00016 '00024 -00032 '0004 '00048 '00056 '00064 '00072 "0008 

 Extensions in inches. 

 Fig. 8 — Tensile Tests of Mortar Briquettes, containing steel bars, half 

 inch diameter. Age 90 days. 



No. 1 — One Hemmoor cement to three Emu Plains sand; five bars. 



2— 



one 

 four 



