ทดสอบดิน

Soil Mechanics Laboratory 348 การทดสอบแรงอัดสามแกน Triaxial Compression Test Project Name : ทดสอบ Date of Test : 21/02/2548 Sample No. :1 Location : CV Building Tested by : สมชาย Boring No. : BH-1 Soil Sample : Clayey Sand Checked by : ชูศกั ด์ิ คีรรี ัตน Depth (m) : 0.00-0.05 Type of Test : CU Initial Water Content : 17.11 % Sample Diameter : 4.80 cm : 9.95 cm Load Rate : 0.1 mm/min Final Water Content : 24.80 % Sample Height : 20 t/m2 Ring Constant : 0.1399 kg/div Effective Cell Pressure : 10 t/m2 Back Pressure Volume Excess Change Pore Data Monitor No.2 (Rdg,cc) Press. 0.00 0.53 Deform Strain Correct Load Load Deviator Horz. Ver. Principal p’ q’ 0.00 0.87 0.00 1.15 x 0.01 Area Reading Stress Pressure Pressure Stress 0.00 1.44 0.00 1.71 (mm) (%) (cm2) (div) (kg) (t/m2) (t/m2) (t/m2) (Ratio) (t/m2) (t/m2) 0.00 2.06 0.00 2.26 10 0.10 18.12 19 2.66 1.47 10.00 11.47 1.15 10.21 0.74 0.00 2.46 0.00 2.67 20 0.20 18.14 34 4.76 2.62 10.00 12.62 1.26 10.44 1.31 0.00 2.89 0.00 3.26 30 0.30 18.16 44 6.16 3.39 10.00 13.39 1.34 10.55 1.70 0.00 3.60 0.00 3.89 40 0.40 18.18 53 7.41 4.08 10.00 14.08 1.41 10.60 2.04 0.00 4.15 0.00 4.36 50 0.50 18.19 62 8.67 4.77 10.00 14.71 1.48 10.68 2.39 0.00 4.53 0.00 4.68 60 0.60 18.21 73 10.21 5.61 10.00 15.61 1.56 10.76 2.81 0.00 4.84 0.00 4.94 70 0.70 18.23 79 11.05 6.06 10.00 16.06 1.61 10.77 3.03 0.00 5.05 0.00 5.18 80 0.80 18.25 85 11.89 6.52 10.00 16.52 1.65 10.80 3.26 0.00 5.27 0.00 5.33 90 0.90 18.27 92 12.87 7.04 10.00 17.04 1.70 10.85 3.52 0.00 2.37 100 1.01 18.29 99 13.85 7.57 10.00 17.57 1.76 10.90 3.79 120 1.21 18.32 111 15.53 8.48 10.00 18.48 1.85 10.98 4.24 140 1.41 18.36 118 16.51 8.99 10.00 18.99 1.90 10.90 4.50 160 1.61 18.40 124 17.35 9.43 10.00 19.43 1.94 10.83 4.72 180 1.81 18.44 129 18.05 9.79 10.00 19.79 1.98 10.75 4.90 200 2.01 18.47 132 18.47 10.00 10.00 20.00 2.00 10.64 5.00 220 2.21 18.51 135 18.89 10.21 10.00 20.21 2.02 10.58 5.11 240 2.41 18.55 136 19.03 10.26 10.00 20.26 2.03 10.45 5.13 260 2.61 18.59 137 19.17 10.31 10.00 20.31 2.03 10.32 5.16 280 2.81 18.63 137 19.17 10.29 10.00 20.29 2.03 10.21 5.15 300 3.02 18.67 138 19.31 10.34 10.00 20.34 2.03 10.12 5.17 320 3.22 18.71 138 19.31 10.32 10.00 20.32 2.03 9.98 5.16 340 3.42 18.74 139 19.45 10.38 10.00 20.38 2.04 9.92 5.19 360 3.62 18.78 139 19.45 10.36 10.00 20.36 2.04 9.85 5.18 380 3.82 18.82 139 19.45 10.33 10.00 20.33 2.03 9.80 5.17

Soil Mechanics Laboratory 349 การทดสอบแรงอดั สามแกน Triaxial Compression Test Data Monitor No.2(Continue) Deform Strain Correct Load Load Deviator Horz. Ver. Principal p’ q’ Volume Excess x 0.01 Area Reading Stress Pressure Pressure Stress Change Pore (mm) (%) (cm2) (div) (kg) (t/m2) (t/m2) (t/m2) (Ratio) (t/m2) (t/m2) (Rdg,cc) Press. 400 4.02 18.86 140 19.59 10.39 10.00 20.39 2.04 9.76 5.20 0.00 5.44 420 4.22 18.90 140 19.59 10.37 10.00 20.37 2.04 9.69 5.19 0.00 5.50 440 4.42 18.94 140 19.59 10.34 10.00 20.34 2.03 9.63 5.17 0.00 5.54 460 4.62 18.98 140 19.59 10.32 10.00 20.32 2.03 9.57 5.16 0.00 5.59 480 4.82 19.02 140 19.59 10.30 10.00 20.30 2.03 9.53 5.15 0.00 5.62 500 5.03 19.06 140 19.59 10.28 10.00 20.28 2.03 9.46 5.14 0.00 5.68 520 5.23 19.10 141 19.73 10.33 10.00 20.33 2.03 9.42 5.17 0.00 5.75 540 5.43 19.14 141 19.73 10.31 10.00 20.31 2.03 9.37 5.16 0.00 5.79 560 5.63 19.18 141 19.73 10.29 10.00 20.29 2.03 9.32 5.15 0.00 5.83 580 5.83 19.22 142 19.87 10.34 10.00 20.34 2.03 9.35 5.17 0.00 5.82 600 6.03 19.26 142 19.87 10.32 10.00 20.32 2.03 9.32 5.16 0.00 5.84 640 6.43 19.35 143 20.01 10.34 10.00 20.34 2.03 9.28 5.17 0.00 5.89 680 6.83 19.43 144 20.15 10.37 10.00 20.37 2.04 9.26 5.19 0.00 5.93 720 7.24 19.52 145 20.29 10.39 10.00 20.39 2.04 9.26 5.20 0.00 5.94 760 7.64 19.60 146 20.43 10.42 10.00 20.42 2.04 9.26 5.21 0.00 5.95 800 8.04 19.69 147 20.57 10.45 10.00 20.45 2.05 9.26 5.23 0.00 5.97 840 8.44 19.77 149 20.85 10.55 10.00 20.55 2.06 9.31 5.28 0.00 5.97 880 8.84 19.86 149 20.85 10.50 10.00 20.50 2.05 9.30 5.25 0.00 5.95 920 9.25 19.95 148 20.71 10.38 10.00 20.38 2.04 9.26 5.19 0.00 5.93 960 9.65 20.04 146 20.43 10.19 10.00 20.19 2.02 9.20 5.10 0.00 5.90 1000 10.05 20.13 145 20.29 10.08 10.00 20.08 2.01 9.15 5.04 0.00 5.89

Soil Mechanics Laboratory 350 การทดสอบแรงอัดสามแกน Triaxial Compression Test Project Name : ทดสอบ Date of Test : 21/02/2548 Sample No. :1 Location : CV Building Tested by : สมชาย Boring No. : BH-1 Soil Sample : Clayey Sand Checked by : ชศู ักดิ์ คีรีรัตน Depth (m) : 0.00-0.05 Type of Test : CU Initial Water Content : 17.11 % Sample Diameter : 4.80 cm : 9.95 cm Load Rate : 0.1 mm/min Final Water Content : 24.80 % Sample Height : 20 t/m2 Ring Constant : 0.1399 kg/div Effective Cell Pressure : 20 t/m2 Back Pressure Volume Excess Change Pore Data Monitor No.3 (Rdg,cc) Press. 0.00 0.11 Deform Strain Correct Load Load Deviator Horz. Ver. Principal p’ q’ 0.00 0.30 0.00 0.61 x 0.01 Area Reading Stress Pressure Pressure Stress 0.00 0.92 0.00 1.27 (mm) (%) (cm2) (div) (kg) (t/m2) (t/m2) (t/m2) (Ratio) (t/m2) (t/m2) 0.00 1.60 0.00 1.93 10 0.10 18.12 20 2.80 1.55 20.00 21.55 1.08 20.67 0.78 0.00 2.24 0.00 2.56 20 0.20 18.14 54 7.55 4.16 20.00 24.16 1.21 21.78 2.08 0.00 2.92 0.00 3.57 30 0.30 18.16 76 10.63 5.85 20.00 25.85 1.29 22.32 2.93 0.00 4.21 0.00 4.84 40 0.40 18.18 93 13.01 7.16 20.00 28.15 1.41 22.81 4.08 0.00 5.34 0.00 5.83 50 0.50 18.19 106 14.83 8.15 20.00 28.15 1.41 22.81 4.08 0.00 6.27 0.00 6.68 60 0.60 8.21 120 16.79 9.22 20.00 29.22 14.46 23.01 4.61 0.00 7.09 0.00 7.38 70 0.70 18.23 139 19.45 10.67 20.00 30.67 1.53 23.41 5.34 0.00 7.69 0.00 7.97 80 0.80 18.25 152 21.26 11.65 20.00 31.65 1.58 23.59 5.83 0.00 8.26 0.00 8.54 90 0.90 18.27 166 23.22 12.71 20.00 32.71 1.64 23.80 6.36 0.00 8.77 100 1.01 18.29 179 25.04 13.69 20.00 33.69 1.68 23.93 6.85 120 1.21 18.32 205 28.68 15.66 20.00 35.66 1.78 24.26 7.83 140 1.41 18.36 230 32.18 17.53 20.00 37.53 1.88 24.56 8.77 160 1.61 18.40 257 35.95 19.54 20.00 39.54 1.98 24.93 9.77 180 1.81 18.44 275 38.47 20.86 20.00 40.85 2.04 25.09 10.43 200 2.01 18.47 291 40.71 22.04 20.00 42.04 2.10 25.19 11.02 220 2.21 18.51 305 42.67 23.05 20.00 43.05 2.15 25.26 11.53 240 2.41 18.55 316 44.21 23.83 20.00 43.83 2.19 25.24 11.92 260 2.61 18.59 325 45.47 24.46 20.00 44.46 2.22 25.14 12.23 280 2.81 18.63 330 46.17 24.78 20.00 44.78 2.24 25.01 12.39 300 3.02 18.67 335 46.87 25.10 20.00 45.10 2.26 24.86 12.55 320 3.22 18.71 339 47.43 25.35 20.00 45.35 2.27 24.71 12.68 340 3.42 18.74 343 47.99 25.61 20.00 45.61 2.28 24.55 12.81 360 3.62 18.78 349 48.83 26.00 20.00 46.00 2.30 24.46 13.00 380 3.82 18.82 353 49.38 26.24 20.00 46.24 2.31 24.35 13.12

Soil Mechanics Laboratory 351 การทดสอบแรงอัดสามแกน Triaxial Compression Test Data Monitor No.3(Continue) Deform Strain Correct Load Load Deviator Horz. Ver. Principal p’ q’ Volume Excess x 0.01 Area Reading Stress Pressure Pressure Stress Change Pore (mm) (%) (cm2) (div) (kg) (t/m2) (t/m2) (t/m2) (Ratio) (t/m2) (t/m2) (Rdg,cc) Press. 400 4.02 18.86 357 49.94 26.48 20.00 46.48 2.32 24.29 13.24 0.00 8.95 420 4.22 18.90 361 50.50 26.72 20.00 46.72 2.34 24.25 13.36 0.00 9.11 440 4.42 18.94 367 51.34 27.11 20.00 47.11 2.36 24.28 13.56 0.00 9.28 460 4.62 18.98 371 51.90 27.34 20.00 47.34 2.37 24.24 13.67 0.00 9.43 480 4.82 19.02 374 52.32 27.51 20.00 47.51 2.38 24.22 13.76 0.00 9.54 500 5.03 19.06 375 52.46 27.52 20.00 47.52 2.38 24.07 13.76 0.00 9.69 520 5.23 19.10 376 52.60 27.54 20.00 47.54 2.38 24.03 13.77 0.00 9.74 540 5.43 19.14 377 52.74 27.55 20.00 47.55 2.38 23.92 13.78 0.00 9.86 560 5.63 19.18 379 53.02 27.64 20.00 47.64 2.38 23.87 13.82 0.00 9.95 580 5.83 19.22 381 53.30 27.73 20.00 47.73 2.39 23.84 13.87 0.00 10.03 600 6.03 19.26 383 53.58 27.82 20.00 47.82 2.39 23.80 13.91 0.00 10.11 640 6.43 19.35 389 54.42 28.12 20.00 48.12 2.41 23.82 14.06 0.00 10.24 680 6.83 19.43 394 55.12 28.37 20.00 48.37 2.42 23.84 14.19 0.00 10.35 720 7.24 19.52 399 55.82 28.60 20.00 48.60 2.43 23.88 14.30 0.00 10.42 760 7.64 19.60 401 56.10 28.62 20.00 48.62 2.43 23.85 14.31 0.00 10.46 800 8.04 19.69 402 56.24 28.56 20.00 48.56 2.43 23.79 14.28 0.00 10.49 840 8.44 19.77 402 56.24 28.45 20.00 48.45 2.42 23.74 14.23 0.00 10.49 880 8.84 19.86 401 56.10 28.25 20.00 48.25 2.41 23.67 14.13 0.00 10.46 920 9.25 19.95 400 55.96 28.05 20.00 48.05 2.40 23.61 14.03 0.00 10.42 960 9.65 20.04 399 55.82 27.85 20.00 47.85 2.39 23.55 13.93 0.00 10.38 1000 10.05 20.13 398 55.68 27.66 20.00 47.66 2.38 23.48 13.83 0.0 10.35

Soil Mechanics Laboratory 352 Sample (t/m2) การทดสอบแรงอดั สามแกน No.3 Effective Confining Pressure (t/m2) Triaxial Compression Test 20 Maximum Deviator Stress (%) 28.64 Strain at Failure No.1 No.2 7.84 5 10 4.38 10.55 8.64 8.44 Deviator Stress (t/m2) 35 ตวั อยา งท่ี 1 30 ตัวอยางท่ี 2 25 ตวั อยา งท่ี 3 20 15 10 5 0 0 1 2 3 4 5 6 7 8 9 10 11 Axial Stress (t/m2) q’ (t/m2) 20 15 ตวั อยา งที่ 1 10 ตัวอยา งที่ 2 ตวั อยางท่ี 3 เสนสัมผสั 5 0 0 5 10 15 20 25 30 p’ (t/m2)

Soil Mechanics Laboratory 353 การทดสอบแรงอัดสามแกน Triaxial Compression Test Mohr ‘s Circle Stress Path Method Mohr ‘s Circle Method a′ = 0.00 t/m2 α′ = 31.20° c′ = 0.00 t/m2 φ′ = 37.28°

Soil Mechanics Laboratory 354 การทดสอบแรงอดั สามแกน Triaxial Compression Test Project Name : Date of Test : Sample No. : Location : Tested by : Boring No. : Soil Sample : Checked by : Depth (m) : Type of Test : Initial Water Content : % Sample Diameter : cm Final Water Content : % Sample Height : cm Load Rate : mm/min Effective Cell Pressure : t/m2 Back Pressure : t/m2 kg/div Ring Constant : Volume Excess Change Pore Data Monitor No.1 (Rdg,cc) Press. Deform Strain Correct Load Load Deviator Horz. Ver. Principal p’ q’ x 0.01 Area (mm) (%) (cm2) Reading Stress Pressure Pressure Stress (div) (kg) (t/m2) (t/m2) (t/m2) (Ratio) (t/m2) (t/m2)

Soil Mechanics Laboratory 355 การทดสอบแรงอดั สามแกน Triaxial Compression Test Data Monitor No.1(Continue) Deform Strain Correct Load Load Deviator Horz. Ver. Principal p’ q’ Volume Excess x 0.01 Area Reading (kg) Stress Pressure Pressure Stress (t/m2) Change Pore (mm) (%) (cm2) (div) (t/m2) (t/m2) (t/m2) (Ratio) (t/m2) (Rdg,cc) Press.

Soil Mechanics Laboratory 356 การทดสอบแรงอดั สามแกน Triaxial Compression Test Project Name : Date of Test : Sample No. : Location : Tested by : Boring No. : Soil Sample : Checked by : Depth (m) : Type of Test : Initial Water Content : % Sample Diameter : cm Final Water Content : % Sample Height : cm Load Rate : mm/min Effective Cell Pressure : t/m2 Back Pressure : t/m2 kg/div Ring Constant : Volume Excess Change Pore Data Monitor No.2 (Rdg,cc) Press. Deform Strain Correct Load Load Deviator Horz. Ver. Principal p’ q’ x 0.01 Area (mm) (%) (cm2) Reading Stress Pressure Pressure Stress (div) (kg) (t/m2) (t/m2) (t/m2) (Ratio) (t/m2) (t/m2)

Soil Mechanics Laboratory 357 การทดสอบแรงอัดสามแกน Triaxial Compression Test Data Monitor No.2(Continue) Deform Strain Correct Load Load Deviator Horz. Ver. Principal p’ q’ Volume Excess x 0.01 Area Reading Stress Pressure Pressure Stress Change Pore (mm) (%) (cm2) (div) (kg) (t/m2) (t/m2) (t/m2) (Ratio) (t/m2) (t/m2) (Rdg,cc) Press.

Soil Mechanics Laboratory 358 การทดสอบแรงอดั สามแกน Triaxial Compression Test Project Name : Date of Test : Sample No. : Location : Tested by : Boring No. : Soil Sample : Checked by : Depth (m) : Type of Test : Initial Water Content : % Sample Diameter : cm Final Water Content : % Sample Height : cm Load Rate : mm/min Effective Cell Pressure : t/m2 Back Pressure : t/m2 kg/div Ring Constant : Volume Excess Change Pore Data Monitor No.3 (Rdg,cc) Press. Deform Strain Correct Load Load Deviator Horz. Ver. Principal p’ q’ x 0.01 Area (mm) (%) (cm2) Reading Stress Pressure Pressure Stress (div) (kg) (t/m2) (t/m2) (t/m2) (Ratio) (t/m2) (t/m2)

Soil Mechanics Laboratory 359 การทดสอบแรงอัดสามแกน Triaxial Compression Test Data Monitor No.3(Continue) Deform Strain Correct Load Load Deviator Horz. Ver. Principal p’ q’ Volume Excess x 0.01 Area Reading Stress Pressure Pressure Stress Change Pore (mm) (%) (cm2) (div) (kg) (t/m2) (t/m2) (t/m2) (Ratio) (t/m2) (t/m2) (Rdg,cc) Press.

Soil Mechanics Laboratory 360 No.3 การทดสอบแรงอดั สามแกน Triaxial Compression Test Sample No.1 No.2 Effective Confining Pressure (t/m2) Maximum Deviator Stress (t/m2) Strain at Failure (%) Deviator Stress (t/m2) Axial Stress (t/m2) q’ (t/m2) p’ (t/m2)

Soil Mechanics Laboratory 361 การทดสอบแรงอดั สามแกน Triaxial Compression Test Mohr ‘s Circle Effective Shear Stress (t/m2) Effective Nomal Stress (t/m2) a′ = Stress Path Method ° c′ = Mohr ‘s Circle Method ° t/m2 α′ = t/m2 φ′ =

Soil Mechanics Laboratory 362 การรายงานผลการทดสอบ 1) เขยี นกราฟความสมั พนั ธระหวาง σ 1 และ ε หรอื σ’1 และ ε σ3 และ ε หรอื σ’3 และ ε 2) อานคา σ1 (หรือ σ’1) สงู สุด และ σ3 (หรอื σ’3) เพ่อื นาํ เขยี น Mohr’ s Circle 3) เขยี น Mohr Circle ของตัวอยา งทั้งหมด 4) ลากเสนตรงสัมผัสวงกลมท้ังหมดเรียกวา Mohr – Coulomb’ s Envelopeจุดตัดบนแกน y คือ Shearing stress เรียกวา Cohesion (C) และมุมเอียงของเสน คอื Angle of internal friction ( Φ )