A study of the mortar making qualities of Illinois sands . vity is , the weight per ou. lb. and the percentage of voids 32,9 • Sample No. 51« (Fig. 31.) This sand wastaken from a large sewer trench near the centerof the city of Peoria. It is yellowish gray incolor and contains some flint, granite, lime-stone and chert. The medium sized grains arethe more angular. There is ^ of suspendedmatter and the sieve analysis (see Plate 31)shows the sand to he quite fine, ^ passing the sieve. The specific gravity is , the weight per , lb., and the percentage of
A study of the mortar making qualities of Illinois sands . vity is , the weight per ou. lb. and the percentage of voids 32,9 • Sample No. 51« (Fig. 31.) This sand wastaken from a large sewer trench near the centerof the city of Peoria. It is yellowish gray incolor and contains some flint, granite, lime-stone and chert. The medium sized grains arethe more angular. There is ^ of suspendedmatter and the sieve analysis (see Plate 31)shows the sand to he quite fine, ^ passing the sieve. The specific gravity is , the weight per , lb., and the percentage of voids . Sample No. 32. (Fig. 32.) This is a barsand from the Illinois Rivor above Peoria. Itis brownish gray in color, about half of thegrains are quartz, the remainder being flint,limestone, granite, chert, and cinders. Thesuspended matter amounts to ^. The sieve analysis (see Plate 32) shows this sand to be PIG, 32. very fine, 97,15;^ passing the sieve. The specific gravityis , the weight per cu. ft. lb., and the voids ^.. FIG. 31.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1910
