COMPRESSIVE AND TRANSVERSE STRENGTHS OP BRICKWORK. LXXXIX. 



Table XIV.— TENSILE TESTS OF CEMENT AND LIME MORTARS 

 USED IN PIERS. 

 Cement Mortar. 



No. 



A 

 B 



Composition of Mortar. 



Sestion in 

 inches. 



Area, 

 sq. inches 



Load in 

 lbs. mean 

 of 6 test*. 



Tensile 



strength. 



lbs. per sq. in 



Age in 

 months. 



1 cement + 2 Neppan River 

 sand + 15% water 



1 cement + 4 sand +15% 

 water 



1-5 x 1-5 

 1-5x1-5 



2-25 

 2-25 



722 

 409 



320 

 181 



4 

 4 



C 

 D 



Lime 



1 stone lime + 2 Nepean 



River sand + 15% water 



1 lime + 4 sand + 15% water 



MORTAE 



15x1-5 

 1-5x1-5 



2-25 

 225 



84 

 46 



37-4 

 20-4 



4 

 4 



Table XV.— SUMMARY OP SHEARING TESTS OF MORTAR AND 

 BRICKS USED IN THE TESTS OF BRICKS, PIERS, AND BEAMS. 



\ 



/ 



cu a. 



aO- 7%, 



Fig. 10. 



/ 



\ 



\ 



/ 



Ch CL 



\ 



Fig. 11. 



Description of Materials. 



Average shearing 

 strength on planes a a 

 Lbs. per square inch. 



Age in days. 



1 Hemmoor cement 2 Nepean River sand 

 1 ditto 4 ditto 

 1 Stone lime 2 ditto 

 1 ditto 4 ditto 



192-2 



5875 

 21-46 

 207 



122 

 122 

 129 

 129 



Table XVI.— ADHESION TESTS OF BRIQUETTES WITH DISCS 

 OF BRICK IN THE CENTRE. 



Description of Materials. 



Mean of 2 highest. 

 Lbs. per square inch 



Age in 

 days. 



1 Cement 2 Nepean River sand 15 per cent, water 

 1 ditto 4 ditto ditto 

 1 Stone lime 2 ditto ditto 

 1 ditto 4 ditto ditto 



493 



40 4 



182 



9-8 



122 

 122 

 122 

 122 



