Table XII.— TRANSVERSE TESTS OF CEMENT AND LIME 



MORTARS. 



Cement Mortar. 



No. 



Composition of Mortar. 



Section in 

 inches. 



Span 

 inches. 



Load in lbs. 



mean of 6 



tests. 



Age in 

 months. 



A 



B 



1 cement + 2 Nepean River sand 



+ 15% water 

 1 cement + 4 sand +15% water 



2x2 



2x2 



10 

 10 



263 

 153 



4 



4 



C 



Lime Mor 

 1 stone lime + 2 Nepean River 



sand +15% water 

 1 lime + 4 sand + 15% water 



TAR. 



2x2 



2x2 



10 

 10 



18*4 

 127 



4 

 4 



TRANSVERSE STRENGTH OF BRICKS. 

 Bricks 4£ inches wide, 3 inches deep, 7| inches centres. Mean breaking 

 load 3,462 lbs. Modulus of rupture, 962 lbs. per square inch. 



Table XIII.— COMPRESSIVE STRENGTH OF CEMENT AND LIME 



MORTARS USED IN PIERS. 



Cement Mortar. 









Area 

 ex- 















posed 



Pinal crush- 



Compressive 



m 



No. 



Composition of Mortar. 



Size in 

 inches. 



to 

 crush- 

 ing. 



ing load lbs. 

 mean of 3 



strength 



.s'-a 



3,1 









sq. iu. 



tests, 



lbs. per sq. ill 



<i 



A 



1 cement + 2 Nepean River 



6x6x9 



36 



63,516 



1,764 



4 





sand + 15 per cent, water 



6x6x6 



36 



84,116 



2,336 



4 





ditto 



6x6x4 



36 



92,400 



2,566 



4 





ditto 



6x6x2 



36 



noo.ooo 



over 2777 



4 





ditto 



6 x 6x[ 



36 



+224,000 



6,222 



4 





ditto 



6 x 6xi 



36 



£224,000 



over 6222 



4 



B 



1 cement + 4 Nepean River 



6 x 6x9 



36 



35,866 



996 



4 





sand + 15 percent, water 



6x6x6 



36 



57,816 



1,606 



4 





ditto 



6 x 6x4 



36 



64,766 



1,799 



4 





ditto 



6x6x2 



36 



95,066 



2,630 



4 





ditto 



6x6x1 



36 



181,776 



5,049 



4 





ditto 



6x64 



36 



206,304 



5,730 



4 





Lime 



Mortar. 





mean, 2 tests 







C 



1 stone lime + 2 Nepean River 



6x6x12 



36 



1,075 



28 



4 





sand +15 per cent, water 



6 X 6 X 9 



36 



1,445 



40 



4 





ditto 



6 X 6 X 6 



36 



1,860 



61 



4 





ditto 



6 X 6 X 4 



36 



2,740 



76 



4 





ditto 



6x6x2 



36 



7,725 



214 



4 





ditto 



6x6x1 



36 



8,712 



242 



4 





ditto 



6 x 6x£ 



36 



20,250 



562 



4 



D 



1 stone lime + 4 Nepean River 



6X6X12 



36 



305 



8-4 



4 





sand + 15 per cent, water 



6 X 6 X 9 



36 



510 



14 



4 





ditto 



6 X 6 X 6 



36 



1,642 



47 



4 





ditto 



6 X 6 X 4 



36 



2,137 



59 



4 





ditto 



6 x 6x2 



36 



7,175 



199 



4 





ditto 



6x6x1 



36 



8,325 



231 



4 





ditto 



6x6xJ 



36 



16,408 



455 



4 



Without breaking, t Cracked on edges. % Slight cracks on edge. 



