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Testing

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Testing

Construction Materials Laboratory is specifically devoted to the testing and analysis of concrete and its constituents. The technicians and staff are expertly trained in all facets of testing. Some of the tests carried out in this laboratory are mentioned below.

Aggregates:

  • Bulk Density ("Unit Weight") and Voids in Aggregate (ASTM C29)
  • Organic Impurities in Fine Aggregates for Concrete (ASTM C40)
  • Surface Moisture in Fine Aggregate (ASTM C70)
  • Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate (ASTM C88)
  • Materials Finer than 75-μm (No. 200) Sieve in Mineral Aggregates by Washing (ASTM C117)
  • Lightweight Particles in Aggregate (ASTM C123)
  • Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate (ASTM C127)
  • Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate (ASTM C128)
  • Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine (ASTM C131)
  • Sieve Analysis of Fine and Coarse Aggregates (ASTM C136)
  • Clay Lumps and Friable Particles in Aggregates (ASTM C142)
  • Petrographic Examination of Aggregates for Concrete (ASTM C295)
  • Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine (ASTM C535)
  • Total Evaporable Moisture Content of Aggregate by Drying (ASTM C566)
  • Potential Alkali Reactivity of Aggregates (Mortar-Bar Method) (ASTM C1260)
  • Sand Equivalent Value of Soils and Fine Aggregate (ASTM D2419)
  • Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate (ASTM D4791)
  • Determining the Percentage of Fractured Particles in Coarse Aggregate (ASTM D5821)

Cement:

  • Compressive Strength of Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube Specimens) (ASTM C109)
  • Chemical Analysis of Hydraulic Cement (ASTM C114)
  • Autoclave Expansion of Hydraulic Cement (ASTM C151)
  • Normal Consistency of Hydraulic Cement (ASTM C187)
  • Density of Hydraulic Cement (ASTM C188)
  • Time of Setting of Hydraulic Cement by Vicat Needle (ASTM C191)
  • Fineness of Hydraulic Cement by Air-Permeability Apparatus (ASTM C204)
  • Flexural Strength of Hydraulic-Cement Mortars (ASTM C348)
  • Compressive Strength of Hydraulic-Cement Mortars (Using Portions of Prisms Broken in Flexure) (ASTM C349)
  • Potential Expansion of Portland-Cement Mortars Exposed to Sulfate (ASTM C452)
  • Flow of Hydraulic Cement Mortar (ASTM C1437)

Admixtures:

  • Air-Entraining Admixtures for Concrete (ASTM C233)
  • Sampling and Testing Fly Ash or Natural Pozzolans for Use in Portland-Cement Concrete (ASTM C311)
  • Effectiveness of Pozzolans or Ground Blast-Furnace Slag in Preventing Excessive Expansion of Concrete Due to the Alkali-Silica Reaction (ASTM C441)

Concrete:

  • Compressive Strength of Cylindrical Concrete Specimens (ASTM C39)
  • Obtaining and Testing Drilled Cores and Sawed Beams of Concrete (ASTM C42)
  • Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete (ASTM C138)
  • Slump of Hydraulic-Cement Concrete (ASTM C143)
  • Length Change of Hardened Hydraulic-Cement Mortar and Concrete (ASTM C157)
  • Making and Curing Concrete Test Specimens in the Laboratory (ASTM C192)
  • Air Content of Freshly Mixed Concrete by the Pressure Method (ASTM C231)
  • Bleeding of Concrete (ASTM C232)
  • Flexural Strength of Concrete (Using Simple Beam with Center-Point Loading) (ASTM C293)
  • Time of Setting of Concrete Mixtures by Penetration Resistance (ASTM C403)
  • Static Modulus of Elasticity and Poisson’s Ratio of Concrete in Compression (ASTM C469)
  • Splitting Tensile Strength of Cylindrical Concrete Specimens (ASTM C496)
  • Pulse Velocity Through Concrete (ASTM C597)
  • Density, Absorption, and Voids in Hardened Concrete (ASTM C642)
  • Scaling Resistance of Concrete Surfaces Exposed to Deicing Chemicals (ASTM C672)
  • Making, Accelerated Curing, and Testing Concrete Compression Test Specimens (ASTM C684)
  • Rebound Number of Hardened Concrete (ASTM C805)
  • Half-Cell Potentials of Uncoated Reinforcing Steel in Concrete (ASTM C876)
  • Time of Flow of Fiber-Reinforced Concrete through Inverted Slump Cone (ASTM C995)
  • Acid-Soluble Chloride in Mortar and Concrete (ASTM C1152)
  • Determining Consistency and Density of Roller-Compacted Concrete Using a Vibrating Table (ASTM C1170)
  • Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration (ASTM C1202)
  • Water-Soluble Chloride in Mortar and Concrete (ASTM C1218)
  • Determination of Length Change of Concrete Due to Alkali-Silica Reaction (ASTM C1293)
  • Determining the Apparent Chloride Diffusion Coefficient of Cementitious Mixtures by Bulk Diffusion (ASTM C1556)
  • Evaluating Plastic Shrinkage Cracking of Restrained Fiber Reinforced Concrete (Using a Steel Form Insert) (ASTM C1579)
  • Determining Age at Cracking and Induced Tensile Stress Characteristics of Mortar and Concrete under Restrained Shrinkage (ASTM C1581)
  • Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension (Pull-off Method) (ASTM C1583)
  • Static Segregation of Self-Consolidating Concrete Using Column Technique (ASTM C1610)
  • Slump Flow of Self-Consolidating Concrete (ASTM C1611)
  • Passing Ability of Self-Consolidating Concrete by J-Ring (ASTM C1621)
  • Depth of penetration of water under pressure (BS EN 12390-8)
  • Tests for gas permeability of concrete (RILEM TC 116-PCD)
  • Accelerated chloride penetration (NT BUILD 443)
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