A study of the mortar making qualities of Illinois sands . FIG. 30. Sample No. 50. (Fig. 30.) This sand isfrom the Crescent Gravel Pit near Peoria. Itis yellov/iah gray in color and contains someshale, flint, and granite. The grains arerounded and quite fine, ^ passing sieve and ^ the No. 60.(see Plate 30)There is ^ of suspended matter. The specif-ic gravity 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 incolo
A study of the mortar making qualities of Illinois sands . FIG. 30. Sample No. 50. (Fig. 30.) This sand isfrom the Crescent Gravel Pit near Peoria. Itis yellov/iah gray in color and contains someshale, flint, and granite. The grains arerounded and quite fine, ^ passing sieve and ^ the No. 60.(see Plate 30)There is ^ of suspended matter. The specif-ic gravity 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
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1910
