Concrete, Rock Mechanics and Ballast Laboratory

  The experiments dealing with the physical, chemical and mechanical properties of rocks, freshly mixed and hardened concrete are performed in this laboratory.

  Rock Mechanics Experiments

  1- Core sampling with the diameter of 1,1.5,2,3,4 in.

  2- Unconfined uniaxial strength of dry and saturated core specimens

  3- Direct shear strength

  4- Point load test

  Tests of Aggregates and Ballast

  1- Grading (Sieve analysis)

  2- Flakiness and elongation indexes

  3- Percentage of fracture

  4- Particles finer than sieve no.200

  5- Fine particles and clay lumps

  6- Bulk density

  7- Specific gravity

  8- Water absorption

  9- Sand bulking

  10- Resistance to abrasion and impact using LA machine

  11- Resistance to abrasion using Deval machine

  12- Resistance to abrasion using micro deval apparatus

  13- Impact value

  14- Crushing value

  15- Soundness of aggregates by use of sodium and magnesium sulfate

  Freshly Mixed Concrete Tests

  1- Slump

  2- Flowability

  3- Coefficient of compaction

  4- Degree of compactability

  5- Unit weight volume

  6- Making and curing cubic and cylindrical test specimens

  7- Air content (A-method)

  8- Vebe (for RCC and zero-slump concrete)

  9- J ring, U, L, V for SCC concrete

  Tests of Hardened Concrete

  1- Capping and compressive strength of specimens

  2- Indirect tensile strength

  3- Poisson ratio

  4- Static modulus

  5- Dynamical modulus

  6- Schmidt hammer

  7- Electrical resistance

  8- Corrosion potentials

  9- Dispersion coefficient of chloride ions

  Laboratory Apparatus:

    Pic(1):Compressive jack

  Pic(2):Flexural and tensile jack

    Pic(3):Pint load test device

    Pic(4):Concrete mixer

    Pic(5):Deval apparatus

    Pic(6):Micro deval apparatus