beth comes. the objective of this task is to develop a mix design procedure for the various types...

Beth Comes

The objective of this task is to develop a mix design procedure for the various types of FDR.

Each type of FDR has separate mix design:◦ Unstabilized◦ Stabilized FDR with Portland Cement◦ Stabilized FDR with Fly Ash◦ Stabilized FDR with Asphalt Emulsion◦ Stabilized FDR with Asphalt Emulsion with 1% Lime◦ Stabilized FDR with Foamed Asphalt with 1% Portland Cement

FDR Source GradationFDR Type

Unstabilized Stabilized with PC (3, 5, 7 %)

Stabilized with Fly Ash (10, 12, 15 %)

Stabilized with Asphalt Emulsion

(3, 4.5, 6 %)

Stabilized with Asphalt Emulsion (3, 4.5, 6 %)+ Lime

Stabilized with Foamed Asphalt

(2.5, 3, 3.5 %) + PC

Poor

Dirty

-Moisture-density curve-Mr and CBR

-Moisture-density curve- Compressive strength-Moisture sensitivity


-Superpave Gyratory- Bulk density using Corelok- Maximum density using Corelok-Moisture conditioning


-Superpave Gyratory- Moisture-density curve (use results of unstabilized)- Bulk density using Corelok- Maximum density using Corelok-Moisture conditioning

Clean







Good

Dirty







Clean







For Unstabilized FDR, four levels: 25, 50, 75% virgin material and 100% virgin materials as the control

5 - points moisture density curves for Unstabilized, Stabilized with PC, and Stabilized with Fly Ash

5 levels of stabilizer (PC, Fly Ash, Emulsion, Emulsion + Lime, Foamed Asphalt + PC)

Lime content for Emulsion + Lime stabilizer is constant: 1.0 % Lime

PC content for Foamed Asphalt + PC stabilizer: 1.0 % (if failed given conditions, use 2.0% PC)

Foamed Asphalt with PC – approx November 1st

Asphalt Emulsion – approx December 1st

Emulsion with 1% Lime – approx January 1st

Similar to Task 3

Main Difference for Task 4

A uniform section is used in the stress calculations for the resilient modulus

ParameterConfining Pressure

Maximum Stress #

Maximum Load

Cyclic Load

Contact Load

Maximum Stress

Cyclic Stress

Contact Stress

LVDT 1 Def

LVDT 2 Def

LVDT 3 Def

LVDT Ave

Resilient Strain

Resilient Modulus

psi psi lbs lbs lbs psi psi psi in in in in in/in psiSequence 1 2.8 3 1 35 30.6 4 2.8 2.4 0.3 0.0012 0.0012 n/a 0.0012 0.00024 10337.6Sequence 1 2.8 2.7 2 41 37.5 3.6 3.3 3 0.3 0.0015 0.0015 n/a 0.0015 0.0003 10107.7Sequence 1 2.8 2.7 3 43.9 40.6 3.3 3.5 3.2 0.3 0.0016 0.0016 n/a 0.0016 0.00031 10484.5Sequence 1 2.8 2.7 4 46.6 43.5 3.1 3.7 3.5 0.2 0.0016 0.0016 n/a 0.0016 0.00031 11073.1Sequence 1 2.8 2.7 5 47.3 43.8 3.5 3.8 3.5 0.3 0.002 0.002 n/a 0.002 0.00039 8923.2

Column Average 42.7 39.2 3.5 3.4 3.1 0.3 0.0016 0.0016 n/a 0.0016 0.00031 10185.2Standard Deviation 5.2 5.4 0.3 0.4 0.4 0 0.0003 0.0003 n/a 0.0003 0.00006 790.5

Sequence 2 2.8 5.4 1 86.3 79.5 6.8 6.9 6.3 0.5 0.0027 0.0027 n/a 0.0027 0.00054 11766.9Sequence 2 2.8 5.4 2 93.9 86.9 7 7.5 6.9 0.6 0.0032 0.0032 n/a 0.0032 0.00063 11003.2Sequence 2 2.8 5.4 3 90.7 83.3 7.4 7.2 6.6 0.6 0.0028 0.0028 n/a 0.0028 0.00055 12117.9Sequence 2 2.8 5.4 4 86.7 79.2 7.5 6.9 6.3 0.6 0.0026 0.0026 n/a 0.0026 0.00051 12413.9Sequence 2 2.8 5.4 5 85.2 77.5 7.7 6.8 6.2 0.6 0.0026 0.0026 n/a 0.0026 0.00051 12152.5

Column Average 88.6 81.3 7.3 7.1 6.5 0.6 0.0028 0.0028 n/a 0.0028 0.00055 11890.9Standard Deviation 3.6 3.8 0.4 0.3 0.3 0 0.0003 0.0003 n/a 0.0003 0.00005 547

Sequence 3 2.7 8.1 1 129.7 118.4 11.3 10.3 9.4 0.9 0.0035 0.0035 n/a 0.0035 0.0007 13400.1Sequence 3 2.7 8.1 2 133.6 122 11.5 10.6 9.7 0.9 0.0037 0.0037 n/a 0.0037 0.00073 13314.4Sequence 3 2.7 8.1 3 123.8 112.1 11.7 9.9 8.9 0.9 0.0033 0.0033 n/a 0.0033 0.00067 13425.8Sequence 3 2.7 8.1 4 124 112.1 11.9 9.9 8.9 0.9 0.0033 0.0033 n/a 0.0033 0.00066 13439.5Sequence 3 2.7 8.1 5 121.1 109.2 12 9.7 8.7 1 0.0033 0.0033 n/a 0.0033 0.00066 13151.6

Column Average 126.4 114.8 11.7 10.1 9.1 0.9 0.0034 0.0034 n/a 0.0034 0.00068 13346.3Standard Deviation 5.1 5.3 0.3 0.4 0.4 0 0.0002 0.0002 n/a 0.0002 0.00003 119.2

Sequence 4 4.9 4.5 1 71.4 64.3 7.1 5.7 5.1 0.6 0.0017 0.0017 n/a 0.0017 0.00034 15060.7Sequence 4 4.9 4.5 2 69.5 62.3 7.1 5.5 5 0.6 0.0017 0.0017 n/a 0.0017 0.00033 15071.3

302 psi

Passing: Strength ≥ 40 psi

Tube Suction (passing)◦ Average dielectric reading for the last 3 days < 10◦ Soaked Strength ≥ 75% Unsoaked Strength

Moisture Conditioning (passing)◦ Split tensile strength ≥ 25 psi

Acknowledgements Dr. Bang, Professor SDSM&T

Dr. Roberts, Assistant Professor SDSM&T

Dr. Sebaaly, UNR

Dan Johnston, SDDOT

Wade Lein, SDSM&T

Mike deStigter, SDSM&T

Leah Nehl, SDSM&T

Shaun Herrod, SDSM&T

beth comes. the objective of this task is to develop a mix design procedure for the various types...

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