A study of the mortar making qualities of Illinois sands . es in and about the cit-ies of Champaign and Urbana, is a bank sandfrom along the Wabash River near Covington, Ind*It is of a yellowish gray color and containssome flint, limestone and shale. The grains are well rounded. The sieve analysis (see FIG. 12. Plate 12) shows this sand to be fairly well graded and rather coarse, the excess of material being betweenthe and sievos. There is ^ of suspended roatter,principally clay which does not adhere to the grains. The specif-ic gravity is , the weight per cu. ft.
A study of the mortar making qualities of Illinois sands . es in and about the cit-ies of Champaign and Urbana, is a bank sandfrom along the Wabash River near Covington, Ind*It is of a yellowish gray color and containssome flint, limestone and shale. The grains are well rounded. The sieve analysis (see FIG. 12. Plate 12) shows this sand to be fairly well graded and rather coarse, the excess of material being betweenthe and sievos. There is ^ of suspended roatter,principally clay which does not adhere to the grains. The specif-ic gravity is , the weight per cu. ft. lb., and thepercentage of voids • Sample No. 15. (Fig. 13.) This is abank sand from near Gladstone. It is gray incolor and contains some granite and grains are all moderately angular. It isquite fine, ^ passing the sieve ^ the (See Plate 13.) This is thecleanest of the bamk sands there being but ^ of suspended matter. The specific gravity FIG. 13. is , the weight per cu. ft. lb,, and the voids ^..
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecttheses, bookyear1910
