‘EXAMINATION OF BITUMINOUS BROAD MATERIALS, 
47 
FORMS FOR REPORTING TESTS. 
FILE CARDS. 
Form 93.—Rev. 
UNITED STATES DEPARTMENT OF AGRICULTURE, 
OFFICE OF PUBLIC ROADS AND RURAL ENGINEERING, 
Washington, D. C. 
Sample No, ....---- 
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Viscosity Engler-at ..... BO: c. C. specific. .. Fieavy oils... ... (Gb7: Op oi7 i Urs Cp) eel aes Fal acl aaa 
Bitumen solublerimiGSo...2 kel ik ee tk | Heavy oils...... (270-300°@) s feces ek 1 esis 
Free.carbon (insoluble in ©S_) ..-..2.2202.2222-- Pabelsrasidaie's 2-12 Se 8 id No ea at oc 
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Form 77.—Rev. 
UNITED STATES DEPARTMENT OF AGRICULTURE, 
OFFICE OF PUBLIC ROADS AND RURAL ENGINEERING, 
Washington, D. C. 
SUTUDUC INOW ee ee 
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General character.............-- Ween eeu AuOSstat oan 4 ni vak Oy eee POURS ie he shee I es 
SPeCiie Prawiby aor )/ZocWne 2 a2. 6 5. ete ae ee Characheriol residue |. i5 022 sss ee eee 
LUGS TOOLS CS sae se ee ae SACO ae eee ean Consistoney ofresidt oat test af... ._ i Ova 
ASMP DOM bim Osea a eee ie We a De Penetration at 25 °C. (mm.) 
HSMM OM OOM s Crepes ce ee Sea Se i Bitumen soluble in\GSo.. 21.2. case ee eee ce. 
Viscosity at_..... OO maie SW CNCS SID CCHICGs ene Organic marberinsolapler wee nae le 
Diactalitiyate See (CM) ie we ee ee Sek Tnonrganiganalenamsoluible. 5 eee seo es 
Float testat.... °C.time....; at.... °C.time.... || % of total bitumen insol. in 86° naphtha._......_.. 
Renebrea tion atone... (mm) tase29. es lo oe %, of total bitumen insol. in CCly.......22222 22222. 
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Form 67.—Rev. 
- UNITED STATES DEPARTMENT OF AGRICULTURE, 
OFFICE OF PUBLIC ROADS AND RURAL ENGINEERING, 
Washington, D.C. 
Sample No. ..:.-.-- 
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