OIL-MIXED PORTLAND CEMENT CONCRETE. 



17 



There were 37 per cent of voids in the sand, 43 per cent in the stone, 

 and 37 per cent in the gravel. 



The cement passed the specifications of the American Society for 

 Testing Materials. 



Various types of oils were used, and these are described in the fol- 

 lowing table: 



Table 4. — Analysis of oils used in oil-cement-concrete mixtures. 



Sample No. — 



4145 4146 4147 4149 4170 4923 49S1 5053 6464 7393 



Type 



Character 



Specific gravity at 25°/25° C . 

 Per cent of loss at 163° C, 5 



hours (20 grams) 



Character of residue 



( l ) 

 ( 3 ) 

 0.924 



( 3 ) 



0) 

 ( 3 ) 

 0.910 



12.56 

 ( 3 ) 



( l ) 

 ( 3 ) 



0. 926 



( 3 ) 



( l ) 

 ( 3 ) 

 0.923 



7.02 



( 3 ) 



( 2 ) 

 ( 4 ) 



18.38 

 ( 6 ) 



0) 



( 3 ) 

 0.945 



1.35 



( 3 ) 



0.X93 



27.17 

 ( 7 ) 



( 5 ) 

 0.924 



3.70 

 ( 8 ) 



0) 

 ( 3 ) 

 0.904 



0.10 



( 9 ) 



0.949 



19.38 

 (<) 



Per cent of bitumen soluble in 

 CS 2 air temperature 



Per cent of organic matter in- 

 soluble 



Per cent of inorganic matter 

 insoluble 



99.99 

 .01 

 .00 



99.93 

 .07 

 .00 



99.95 

 .05 

 .00 



99.81 

 .13 

 .06 



99.96 

 .04 

 .00 



99.95 

 .02 

 .03 



99.90 

 .07 

 .03 



99.90 

 .10 

 .00 



99.95 

 .05 

 .00 



Total (per cent) 



Per cent of total bitumen in- 

 soluble in 86° B. paraffin 

 naphtha 



Fixed carbon 



Specific viscosity, Engler, 50° C. 



100. 00 



2.23 

 2.41 



14.20 



100.00 



6.82 

 3.36 

 6.40 



100. 00 



10.16 

 5.11 



18.20 



100. 00 



2.24 



1.98 



20.20 



100. 00 

 16.87 



100.00 



3.46 



4.18 



65.10 



100.00 



1.00 

 1.77 

 2.50 



100. 00 



4.12 

 2.82 

 17.40 



100. 00 



1.10 

 1.17 



13.50 



100. 00 



2.45 

 2.87 

 12.20 



1 Fluid residual oil. 



2 Cut-back oil asphalt, 

 s Fluid, greasy. 



« Fluid, sticky. 



6 Fluid, slightly sticky. 



6 Semisolid, sticky. 



7 Slightly granular, more viscous than original. 



8 Fluid, granular in appearance. 



» Very viscous, greasy fluid, rather lumpy; surface 



TENSILE STRENGTH. 



Table 5. — Tensile strength {1:3 mortar, Ottawa sand). 



Age in 

 days. 



Per 

 cent 

 of oil. 





Laboratory No 



. of oil. 





4923 



4981 



5053 



6464 



7393 



7 







256 



283 



244 



210 



221 





2| 



299 



259 



297 





230 





5 



287 



268 



313 



258 



200 





10 



252 



264 



304 



308 



195 



28 







296 



376 



331 



275 



250 





2J 



400 



327 



353 





270 





5 



316 



341 



334 



298 



253 





10 



331 



329 



371 



403 



260 



180 

 360 

 720 







2i 



5 

 10 







2£ 



5 

 10 







2J 



5 

 10 



326 

 449 

 372 

 360 

 326 

 320 

 353 

 343 

 293 

 257 



312 

 323 

 321 

 319 



302 

 298 

 325 

 330 

 288 

 286 

 309 

 320 























































315 



















