A study of the mortar making qualities of Illinois sands . PIG. 9, Sample TIo. 9« (Fig. 9.) This is agample of the sand used in the constructionof the Supreme Court Building at Springfieldand is a bank sand from near Lincoln. It isdark gray in color and nearly half of it iscomposed of flint, granite and grains are all well rounded. It isfairly well graded (see Plate 9.), ^ pass-ing the No. 16 sieve and ^ the No. 60. There is of sus-pended matter, principally clay, which adheres to the specific gravity is , the weight per cu. ft. lb.,and the perce
A study of the mortar making qualities of Illinois sands . PIG. 9, Sample TIo. 9« (Fig. 9.) This is agample of the sand used in the constructionof the Supreme Court Building at Springfieldand is a bank sand from near Lincoln. It isdark gray in color and nearly half of it iscomposed of flint, granite and grains are all well rounded. It isfairly well graded (see Plate 9.), ^ pass-ing the No. 16 sieve and ^ the No. 60. There is of sus-pended matter, principally clay, which adheres to the specific gravity is , the weight per cu. ft. lb.,and the percentage of voids • Sample No. 10. (Fig. 10) This is a barsand from near Alton. It is dark gray in colorand contains some flint granite and is but ^ of suspended matter. Thesieve analysis (see Plate 10.) shows it to bevery fine, ^ passing the sieve. The. specific gravity is , the weight per lb., and the percentage of voids •Sample No. 11. (Fig. ii.) This is alsoa bar sand from near Alton. It is brownishgray in color and contains some flint and lime-stone. There is also a small amount of coaland cinders present, probably as the result oftransportation. The finer grains are wellrounded but the coarser grains are more angu-lar than usual. The sieve analysis (see FIG. 10.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1910
