Facility Resources

The following are equipment available at the Austin Concrete Materials Laboratory.  In addition to the equipment shown below, there is a wide range of testing equipment and analytical devices available within other departments at the University of Texas.

Mixing Equipment

  • Mortar mixers (20 & 110 liter capacity)
  • Rotary drum mixers (4 cubic ft and 6 cu ft capacity)
  • Hobart mixers (4 and 6 liters capacity)
  • Vibrating tables and Internal Vibrators

Fresh Mixture Characterization Equipment

  • Manual flow tables (ASTM C 230)
  • Slump cone (AASHTO T 119)
  • Inverted slump cone (ASTM C 995)
  • Vicat apparatus (ASTM C 191)
  • Penetrometer (ASTM C 403)
  • Roll-a-meter (ASTM C 173)
  • Pressure meter (ASTM C 231)
  • ICAR rheometer

Mechanical Testing

  • Computer controlled closed-loop hydraulic materials test system (55-kips capacity)
  • Universal testing machine (120 Kips capacity in compression and 40 Kips in tension)
  • Compression test machine (600 Kips capacity) with fixtures for flexure, compression, tensile, elastic modulus, and Poisson’s ratio of concrete.
  • Compressive test machine for concrete masonry units (ASTM  C 140)
  • Hydraulic pumps and actuators with electric control systems and reaction
  • Frames for structural tests (up to 300 Kips capacity)
  • Creep test apparatus (ASTM C 512)
  • Triaxial shear apparatus
  • Direct  shear apparatus

  Physical Testing

  • Drying shrinkage of concrete (AASHTO T 160)
  • Plastic shrinkage of concrete (ICBO AC 32) 
  • Thermal expansion of concrete (CRD C 39 and modified)
  • Thermal cracking frame and temperature stress testing machine
  • Free deformation (early age) testing apparatus
  • Specific gravity and absorption of aggregates (AASHTO T 84, AASHTO T 85)
  • Sieve shaker (ASTM C 1077)
  • Uncompacted void test apparatus for fine and coarse aggregates (AASHTO T 304)
  • Sand equivalent test equipment (AASHTO T 176)

Durability Testing

  • Freezing and thawing of concrete (AASHTO T 161), including:
    • Automated freeze-thaw cabinet
    • Resonant frequency test apparatus
  • Freezing and thawing of masonry units (ASTM C 1262)
  • Salt scaling test (ASTM C 672)
  • Unconfined freezing and thawing in NaCl solution (CSA method)
  • Chloride permeability test (AASHTO T 277)
  • Water permeability apparatus
  • Ponding permeability test apparatus (AASHTO T 259 and T 260)
  • Abrasion test system (ASTM C 779)
  • Ultrasonic concrete equipment
  • Corrosion monitoring test equipment (ASTM C 876)
  • Electric conductivity test apparatus
  • Sulfate attack test (ASTM C 1012)
  • Alkali-aggregate reaction test equipment (ASTM C 227, ASTM C 1260, and ASTM C 1293)
  • Potentiostats/galvanostats
  • Multiplexers
  • Multimeters
  • Accelerated corrosion monitoring system

Data Acquisition Systems

  • PC based data acquisition/control systems with A/D boards, and
  • compatible transducers and software and related accessories for signal
  • conditioning
  • Fluke high-speed data acquisition systems
  • Several Fluke and Campbell Scientific downloadable data loggers

Microstructure, Petrography, and Chemical Analysis

  • X-ray diffraction with Rietveld analysis
  • Isothermal calorimetry
  • Simultaneous Thermogravimetric Analysis/Differential Thermal Analysis/Differential Scanning Calorimetry
  • Chemical and autogenous shrinkage measurement
  • Pore solution analysis (flame photometry, autotitrator, ion chromatograph)
  • Scanning electron microscope sample preparation facilities
  • Air-void analysis (linear traverse and modified point count)
  • Pore System Characterization Facilities (ASTM C 856) consisting of:
    • Concrete Slab Saw
    • Concrete Polisher/Grinder
    • Stereo Microscope and Travel Stage
  • Chemical and Physical Analysis of Cement (ASTM 194) and Pozzolans (ASRM C618)