1. Introduction: Consolidation test is used to determine one-dimensional consolidation properties of the soil. During th

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1. Introduction:
Consolidation test is used to determine one-dimensional
consolidation properties of the soil. During the test, soil sample
is restrained laterally and drained axially to simulate the one
dimensional consolidation
Procedure
Each group has to record the dial gauge reading for 3 load steps
during and after the scheduled time for the experiments
Report
(1). Plot gauge reading vs log (t) graph for 3 load increments
(Ref: soil mechanics by Craig)
(2). The dial gauge reading vs log (t) plot for the third load
increment, indicate the secondary compression and primary
consolidation regions
(3). Calculate coefficient of consolidation, cv,
coefficient of volume compressibility, mv.
(4). Discuss the practical significance of this test.

1 Introduction Consolidation Test Is Used To Determine One Dimensional Consolidation Properties Of The Soil During Th 1 (59.11 KiB) Viewed 22 times

1 Introduction Consolidation Test Is Used To Determine One Dimensional Consolidation Properties Of The Soil During Th 2 (79.83 KiB) Viewed 22 times

1 Introduction Consolidation Test Is Used To Determine One Dimensional Consolidation Properties Of The Soil During Th 3 (85.6 KiB) Viewed 22 times

CIVL 462 - Consolidation Machine #2 sample #1 Machine #3 sample #2 Machine #4 sample #3 Ring Dia 50.05 mm Area 1967.43 mm2 Ht 19.65 mm Specific Gravity 2.471 g/cm3 Wtring + soil 148.55 Wtring 69.90 Wt soil 78.65 MC 17.47 % Dry weight 66.95 Ring Dia 49.62 mm Area 1933.77 mm2 Ht 20.16 mm Specific Gravity 2.471 g/cm3 Wtring + soil 153.03 Wtring 72.84 Wt soil 80.19 g MC 17.47 % Dry weight 68.26 g mm mm2 mm g/cm3 g g 9 % ס וס O O O o Ring Dia 50.19 Area 1978.45 Ht 20.14 Specific Gravity 2.471 Wtring + soil 149.65 Wtring 68.54 Wt soil 81.11 MC 17.47 Dry weight 69.05 Oo oo g 1kg, 50kPa, 18/3/20 AM 1kq, 50kPa, 18/3/20 AM 1ko, 50kPa, 18/3/20 AM Time (m) 0.000 0.125 0.250 0.500 1.000 2.000 4.000 8.000 15.000 30.000 43.000 58.000 90.000 101.000 142.000 205.000 236.000 DGR 618.0 1026.0 1046.0 1064.0 1084.0 1107.0 1137.0 1176.0 1219.0 1279.0 1309.0 1332.0 1355.0 1362.0 1367.0 1372.0 1373.0 adi DGR mm (0.002) 0.0 0.000 408.0 0.816 428.0 0.856 446.0 0.892 466.0 0.932 489.0 0.978 519.0 1.038 558.0 1.116 601.0 1.202 661.0 1.322 691.0 1.382 714.0 1.428 737.0 1.474 744.0 1.488 749.0 1.498 754.0 1.508 755.0 1.510 Time (m) 0.000 0.125 0.250 0.500 1.000 2.000 4.000 8.000 15.000 30.000 52.000 83.000 147.000 194.000 229.000 DGR 1035.0 1502.0 1524.0 1548.0 1580.0 1620.0 1669.0 1728.0 1804.0 1909.0 1996.0 2053.0 2086.0 2093.0 2098.0 adj DGR mm (x0.002) 0.0 0.000 467.0 0.934 489.0 0.978 513.0 1.026 545.0 1.090 585.0 1.170 634.0 1.268 693.0 1.386 769.0 1.538 874.0 1.748 961.0 1.922 1018.0 2.036 1051.0 2.102 1058.0 2.116 1063.0 2.126 Time (m) 0.000 0.125 0.250 0.500 1.000 2.000 14.000 8.000 15.000 30.000 94.000 124.000 200.000 265.000 1282.000 DGR 1008.0 1329.0 1342.0 1364.0 1391.0 1422.0 1458.0 1503.0 1556.0 1628.0 1725.0 1735.0 1739.0 1747.0 1748.0 adi DGR 0.0 321.0 334.0 356.0 383.0 414.0 450.0 495.0 548.0 620.0 717.0 727.0 731.0 739.0 740.0 mm (0.002) 0.000 0.642 0.668 0.712 0.766 0.828 0.900 0.990 1.096 1.240 1.434 1.454 1.462 1.478 1.480
2ko. 100kPa, 18/3/20 PM 2ko, 100kPa, 18/3/20 PM 52kg100kPa, 18/3/20 PM 7 B Time (m) DGR adj DGR mm (x0.002) 0.000 1373.0 755.0 1.510 0.125 1620.0 1002.0 2.004 1 0.250 1640.0 1022.0 2.044 0.500 1662.0 1044.0 2.088 B 1.000 1685.0 1067.0 2.134 4 2.000 1711.0 1093.0 2.186 5 4.000 1741.0 1123.0 2.246 5 8.000 1780.0 1162.0 2.324 7 15.000 1824.0 1206.0 2.412 B 30.000 1879.0 1261.0 2.522 50.000 1911.0 1293.0 2.586 81.000 1929.0 1311.0 2.622 1 130.000 1939.0 1321.0 2.642 2 176.000 1943.0 1325.0 2.650 B 1122.000 1956.0 1338.0 2.676 1 1201.000 1956.0 1338.0 2.676 5 4ka. 200kPa, 20/3/20 AM Time (m) 0.000 0.125 0.250 0.500 1.000 2.000 4.000 8.000 15.000 29.000 47.000 79.000 123.000 1071.000 1200.000 DGR 2098 2274 2291 2310 2331 2359 2396 2443 2494 2552 2590 2616 2630 2660 2662 adj DGR mm (0.002) 1063 2.126 1239 2.478 1256 2.512 1275 2.550 1296 2.592 1324 2.648 1361 2.722 1408 2.816 1459 2.918 1517 3.034 1555 3.110 1581 3.162 1595 3.190 1625 3.250 1627 3.254 Time (m) 0.000 0.125 0.250 0.500 1.000 2.000 4.000 8.000 15.000 30.000 76.000 1024.000 1208.000 DGR 1748 1913 1928 1943 1961 1981 2008 2044 2081 2126 2170 2207 2210 adi DGR 740 905 920 935 953 973 1000 1036 1073 1118 1162 1199 1202 mm (0.002) 1.480 1.810 1.840 1.870 1.906 1.946 2.000 2.072 2.146 2.236 2.324 2.398 2.404 4ko. 200kPa, 20/3/20 AM 4ko, 200kPa, 20/3/20 AM 3 Time (m) 0.000 0.125 1 0.250 20.500 3 1.000 # 2.000 5 4.000 5 8.000 - 15.000 3 31.000 49.000 80.000 1 136.000 151.000 B 213.000 # 239.000 DGR adj DGR mm (x0.002) 1956.0 1338.0 2.676 2228.0 1610.0 3.220 2252.0 1634.0 3.268 2272.0 1654.0 3.308 2298.0 1680.0 3.360 2328.0 1710.0 3.420 2363.0 1745.0 3.490 2409.0 1791.0 3.582 2460.0 1842.0 3.684 2518.0 1900.0 3.800 2544.0 1926.0 3.852 2561.0 1943.0 3.886 2572.0 1954.0 3.908 2575.0 1957.0 3.914 2579.0 1961.0 3.922 2580.0 1962.0 3.924 Time (m) 0.000 0.125 0.250 0.500 1.000 2.000 4.000 8.000 15.000 29.000 53.000 80.000 101.000 163.000 237.000 DGR 2662 2908 2928 2950 2980 3017 3062 3125 3185 3244 3280 3297 3303 3311 3317 adj DGR mm (0.002) 1627.0 3.254 1873.0 3.746 1893.0 3.786 1915.0 3.830 1945.0 3.890 1982.0 3.964 2027.0 4.054 2090.0 4.180 2150.0 4.300 2209.0 4.418 2245.0 4.490 2262.0 4.524 2268.0 4.536 2276.0 4.552 2282.0 4.564 Time (m) 0.000 0.125 0.250 0.500 1.000 2.000 4.000 8.000 15.000 30.000 46.000 108.000 133.000 240.000 DGR 2210 2450 2468 2488 2513 2540 2574 2619 2668 2720 2745 2775 2779 2788 adi DGR 1202 1442 1460 1480 1505 1532 1566 1611 1660 1712 1737 1767 1771 1780 mm (0.002) 2.404 2.884 2.920 2.960 3.010 3.064 3.132 3.222 3.320 3.424 3.474 3.534 3.542 3.56
1kg, 50kPa, UNLOAD 20/3/20 PM 1kg, 50kPa, UNLOAD 20/3/20 PM 75 76 1kg, 50kPa, UNLOAD 20/3/20 PM 77 78 Time (m) DGR adj DGR mm (x0.002) 79 0.000 2580 1962 3.924 30 0.125 2536 1918 3.836 31 0.250 2533 1915 3.830 32 0.500 2530 1912 3.824 33 1.000 2526 1908 3.816 34 2.000 2521 1903 3.806 85 4.000 2516 1898 3.796 36 8.000 2511 1893 3.786 37 15.000 2507 1889 3.778 38 30.000 2504 1886 3.772 39 47.000 2503 1885 3.770 90 202.000 2500 1882 3.764 91 251.000 2498 1880 3.760 92 1143.000 2496 1878 3.756 93 1321.000 2496 1878 3.756 94 35 26 FINAL MC 15.19 % 27 Time (m) 0.000 0.125 0.250 0.500 1.000 2.000 4.000 8.000 15.000 30.000 55.000 94.000 143.000 1095.000 1273.000 DGR 3317 3252 3247 3242 3236 3229 3220 3212 3206 3201 3199 3197 3196 3195 3195 adi DGR mm (0.002) 1261 2.522 1196 2.392 1191 2.382 1186 2.372 1180 2.360 1173 2.346 1164 2.328 1156 2.312 1150 2.300 1145 2.290 1143 2.286 1141 2.282 1140 2.280 1139 2.278 1139 2.278 Time (m) 0.000 0.125 0.250 0.500 1.000 2.000 4.000 8.000 15.000 30.000 83.000 1037.000 1220.000 DGR 2788 2744 2740 2737 2732 2728 2722 2716 2712 2709 2707 2702 2702 adj DGR mm (x0.002) 1780 3.560 1736 3.472 1732 3.464 1729 3.458 1724 3.448 1720 3.440 1714 3.428 1708 3.416 1704 3.408 1701 3.402 1699 3.398 1694 3.388 1694 3.388 FINAL MC 15.13 % AINAL MC 15.07%