A study of the mortar making qualities of Illinois sands . FIG. FIG. 2. analysis (see Plato 2) shows this sand tobe slightly coarser and somewhat bettergraded than Sample No. 1., ^ passingthe sieve and ^ the contains but ^ of suspended matter. The specific gravity is , theweight per cu. ft. lb. and the per-centage of voids . Sample No. 5. (Fig. 3.) This is an-other lake sand furnished by the Kniokor-booker Ice Co., Chicago. It is light grayin color. The smaller grains are princi-pally quartz while the larger are almostentirely granite, flint, limes
A study of the mortar making qualities of Illinois sands . FIG. FIG. 2. analysis (see Plato 2) shows this sand tobe slightly coarser and somewhat bettergraded than Sample No. 1., ^ passingthe sieve and ^ the contains but ^ of suspended matter. The specific gravity is , theweight per cu. ft. lb. and the per-centage of voids . Sample No. 5. (Fig. 3.) This is an-other lake sand furnished by the Kniokor-booker Ice Co., Chicago. It is light grayin color. The smaller grains are princi-pally quartz while the larger are almostentirely granite, flint, limestone and sieve analysis (see Plate 3) shov/s thissand to be better graded than either of thepreceeding samples. The suspended matter amounts to ^. Thepercentage of voids is rather low for a sand showing a sieve analysis curve of this character being but . The specificgravity is and the weight per ou. ft. lb. Sample No. 4. (Fig. 4.) This is asample of Joliot limestone screenings andvras being used in Chicago. The stone is veryclose a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1910
