Table III.— COMPRESSION TEST CEMENT MORTAR PrER, No. 1. 

 Mortar = 1 cement + 2 sand +10% water. 

 Dimensions = 12 inches by 6 inches by 6 inches. 

 Length over which compressions ware measured = 200 mm. 

 Age when tested = 109 days in water. 





Readings of Mirrors with 



Readings of Mirrors without 



In 





Load 





distance rods. 







distance rods. 



Compn. 

 (A -b.; 



Remarks 



Tons. 



Front. 



Back. 



Mean 



Diff.A. 



Front. 



Back. 



Mean. 



Diff. B. 



per ton 

 "01 mm. 





'02 mm. 



•02 mm 



•01 mm. 



'01 mm. 



•02 mm. 



02 mm. 



'01 mm. 



•01 mm. 









400 



3-50 



750 



1-16 



250 



4-00 



650 



+0-03 



0565 





2 



453 



4-13 



866 



056 



2-49 



404 



653 



-001 



0-57 



Average comp. 

 per ton = 



3 



4-80 



4-42 



922 



0-53 



2-48 



4-04 



6-52 



-001 



0-5 



00067 mm. 



4 



522 



4-63 



9-85 



61 



2-44 



4-07 



651 



+001 



0-60 



Coefficient of 

 Elasticity 



5 



565 



4-81 



10-46 



0-62 



2-42 



4-10 



6-52 



-002 



064 



= 832 tons 

 per sq. inch. 



6 



608 



500 



11-08 



0-79 



2-40 



4-10 



6-50 



+001 



073 





7 



6 40 



5-47 



11-87 



0-59 



2-40 



411 



6-51 



000 



0-59 





8 



681 



5-65 



12-46 



0-71 



2-40 



411 



6-51 



-001 



072 





9 



7-28 



5-89 



1317 



0-80 



2-39 



411 



6-50 



+001 



0-79 





10 



7-52 



627 



13-97 



1-20 



2-40 



4-11 



6-51 



+0-01 



0-595 





12 



8-25 



6-92 



1517 



1-51 



2-40 



4-12 



6-52 



o-oo 



0-755 





14 



9-08 



7-60 



16-68 



1-63 



2-40 



412 



652 



-001 



i 082 





16 



0-95 



8-36 



1831 



1-49 



2-39 



4-12 



6-51 



+0-06 



0-715 



' 



18 



11-45 



9-35 



20-80 



1-76 



2-38 



4-19 



6-57 



-0-08 



0-92 





20 



1245 



1031 



22-76 





2-31 



4-18 



6-49 









20 



12-70 



10-50 



23-20 



2-31 













After standing 

 a few min- 



15 



11-49 



9-40 



20-89 



2-88 



239 



4-16 



6-55 



+001 



0-58 



utes 



10 



1015 



7-86 



1801 



3-47 



2-40 



4-16 



6-56 



-0-02 



0-69 





5 



8-22 



632 



14-54 



472 



2-40 



4-14 



6-54 



-0-04 



0-95 









520 



4-52 



972 





2-40 



410 



6-50 



















(Rete 



STED.) 















4-50 



5-00 



9-50 



1-33 



4-00 



2-50 



6-50 



-001 



0-67 





2 



513 



570 



10-83 



1-41 



399 



2-50 



6'49 



-o-oi 



0-70 



Average comp. 

 per ton = 



4 



5-67 



6-57 



12-24 



1-56 



3 97 



2-51 



6*48 



+ 0-03 



0-77 



0072 mm. 



6 



610 



7-70 



1380 



1-45 



400 



2-51 



6-51 



+0-01 



0-72 





8 



6-65 



8-60 



15-25 



1-43 



4-02 



2-50 



6-52 



-001 



0-72 



Coefficient of 

 Elasticity 



10 



736 



932 



16-68 



1-36 



401 



2 50 



6-51 



+0-01 



69 



= 768 tons 

 per sq. inch. 



12 



8-04 



10-00 



1804 



1-41 



402 



2-50 



6-52 



000 



0-7L 





14 



8-74 



1071 



19-45 



1-42 



4-02 



2-50 



6-52 



+001 



071 





16 



9-43 



11-44 



2087 



1-57 



403 



250 



6-53 



000 



0-79 





18 



1019 



1225 



22-44 



1-54 



403 



250 



653 



-002 



78 



1 



20 



1099 



12*99 



23 -9S 





4 04 



2-47 



6-51 









