Given Standard and Modified Proctor compaction test results for a soil. The contract specifications require a...

  

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Given Standard and Modified Proctor compaction test results for a soil. The contract specifications require a dry density of at least 113 pcf and a water content of 16% +/- 1%. Standard Proctor ASTM D698 12,375 ft-lb/ft³ w (%) 11.8% 13.6% 15.7% 17.7% 19.6% 20.8% Field test a b Ydry (pcf) C d 100.2 102.8 105.3 106.4 103.7 100.8 Plot moisture versus Yary for the Proctor test data. Also plot compactive effort (log scale) vesus Ydry Use the two plots to analyze field density samples b, c and d, and fill out the table showing how to modify the water content and compaction effort to meet specifications (use the format shown for sample a). Ydry (pcf) Modified Proctor ASTM D1557 56,250 ft-lb/ft³ 115.0 111.0 108.0 111.0 w (%) 11.0% 12.0% 13.6% 14.8% 16.1% 17.2% Ydry Y (pcft w (%) 12.5% 13.5% 18.0% 17.3% 114.3 115.8 117.6 117.9 116.5 114.5 Change water content (w) +3.5% Change Compaction - 40% Given Standard and Modified Proctor compaction test results for a soil. The contract specifications require a dry density of at least 113 pcf and a water content of 16% +/- 1%. Standard Proctor ASTM D698 12,375 ft-lb/ft³ w (%) 11.8% 13.6% 15.7% 17.7% 19.6% 20.8% Field test a b Ydry (pcf) C d 100.2 102.8 105.3 106.4 103.7 100.8 Plot moisture versus Yary for the Proctor test data. Also plot compactive effort (log scale) vesus Ydry Use the two plots to analyze field density samples b, c and d, and fill out the table showing how to modify the water content and compaction effort to meet specifications (use the format shown for sample a). Ydry (pcf) Modified Proctor ASTM D1557 56,250 ft-lb/ft³ 115.0 111.0 108.0 111.0 w (%) 11.0% 12.0% 13.6% 14.8% 16.1% 17.2% Ydry Y (pcft w (%) 12.5% 13.5% 18.0% 17.3% 114.3 115.8 117.6 117.9 116.5 114.5 Change water content (w) +3.5% Change Compaction - 40%