Bulletin . porositywas observed, and it is evident that the kaolin in thisproportion exerts a decided fluxing action, Fi. 27. In the Crawfordsville shale a rise in porosity at 2%and a diop at 3% is ol)served. With 15% of kaolin a verydecided decrease in j)orosity is noted corresponding to thedrop with 11% Canton shale. Fig. 28. In the Galesburg shale we observe (Cone 2 curve) adrop in the porosity for the addition of 1% kaolin, followedby a rise, after which the curve has a slight upward the highest percentage of kaolin added, 15%, the mini-mum point, if there is one, has not been rea
Bulletin . porositywas observed, and it is evident that the kaolin in thisproportion exerts a decided fluxing action, Fi. 27. In the Crawfordsville shale a rise in porosity at 2%and a diop at 3% is ol)served. With 15% of kaolin a verydecided decrease in j)orosity is noted corresponding to thedrop with 11% Canton shale. Fig. 28. In the Galesburg shale we observe (Cone 2 curve) adrop in the porosity for the addition of 1% kaolin, followedby a rise, after which the curve has a slight upward the highest percentage of kaolin added, 15%, the mini-mum point, if there is one, has not been reached, thoughthe curve suggests its presence, Fig. 29. TRANS AM CER 50C VOL X, BLEININGEK AND MOORE 60 CRAWFORDSVILLE SHALE-KAOLIN 1 , 4U ?N 3& / V ?^ ^^ ^ Co -^ \ // ^ ^ —N N &2. riec ^ V o / >^ ^ y. 0 / / KAOLIM Z. t 6 8 10 \L 14 15 SHALE 98 96 94-C 0 M POSITION 9i iO 88 £6 &i> IN THE POROSITY AND THE SPECIFIC GRAVITY OF SOME CLAYS. 43. AllSO^Od % 44 THE IXFLUENCE OF FLUXES AND NON-FLUXES UPON THE CHANGES From the specific gravity and porosity curves of thesingle Crawfordsville shale and kaolin mixtures, Figs. 30and 31, we observe several interesting phenomena. The 1%mixture curve is practically parallel to the pure shalecurve. With the S% mixture the kaolin acts as a flux TRANS AM CER SOC VOLX AND MOORE <^Z^ 1-7 CRAWFORDSVltE 5HALE-ySPECIFIC GRAVITY CU (AOLN^VES. i ! 1 r-d——? ^^ ^^^ ^ 1 :^=3^ 13 \.^~5 ^ - NO. I £ 9% SHA It l^oK :aolin - 2 - 97 • 3 - - 5. 95 - 5 • • 5- 88 - - IZ 09 .06 CONES 03 between Cones 09, 06, and 03-2. At Cone 01 we find adistinct minimum point, which is shown also in the 5%mixture. The Canton shale-kaolin mixtures likewise show aminimum point at Cone 01, and the curves indicate thatup to about 10% the clay substance does not exert any IN THE POROSITY AND THE SPECIFIC GRAVITY OF SOME CLAYS. 45 ui 1 Z< Z -Jo U. / M <O ± ZohZ<o • f? i § ^ * *S
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