Cee398 kuc spring04 instrumentations hollow cylinder tensile tester
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CEE398 (KUC) Spring04 Instrumentations Hollow Cylinder Tensile Tester PowerPoint PPT Presentation


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CEE398 (KUC) Spring04 Instrumentations Hollow Cylinder Tensile Tester. Jerry Kim Graduate Research Assistant In Transportation Facility Division. Asphalt As an Engineering Material. Widely used in paving industry: as binding agent to form asphalt concrete

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CEE398 (KUC) Spring04 Instrumentations Hollow Cylinder Tensile Tester

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CEE398 (KUC) Spring04 InstrumentationsHollow Cylinder Tensile Tester

Jerry Kim

Graduate Research Assistant

In Transportation Facility Division


Asphalt As an Engineering Material

  • Widely used in paving industry:

  • as binding agent to form asphalt concrete

  • Wide variety in material properties:

  • Viscous, Visco-plastic, Visco-elastic, elastic depending on temperatures

  • Difficult to test in compression mode:

  • indirect tension testing has been used


HCT (Hollow Cylinder Tensile Tester)

Intensifier

Hydraulic Loading Unit

Hydraulic Control Unit

Cooling Unit


Pure Tensile Stress Induced

Applied Internal

Pressure

How does it work?


What it can do?

  • Creep (constant loading) test

  • D(t) = (induced strain)/(applied stress)


What it can do?

  • Dynamic Modulus (E*) test

  • E* = (amplitude of stress)/(amplitude of strain)


What it can do?

  • Strength test


Special Features

  • Two-way strain measurements

    a) Strain gages

    b) Volumetric strain measurement

  • Wide range of materials can be tested

    - Asphalt binder, asphalt mastic, asphalt concrete, and even PC concrete


Advantages

  • Possibly portable

  • Relatively inexpensive

  • Eventually, no needs for strain gages

  • Ideal for full characterization of composite materials which varies its properties depending on the proportions of individual constituents.


Questions?


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