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Aggregate Lab

Aggregate Lab

Aggregate Lab

Aggregate plays a key role on the performance of fresh and hardened concrete. Alterations in gradation, maximum size, unit weight, and moisture can all affect the properties of the concrete. Choosing strong and durable good quality aggregate free of clay coatings, absorbed harmful chemicals, when used in correct proportions can produce concrete with consistent strength, workability, finishability, and durability.

Tests Performed/ Codes, Standards, and Specifications

  • ASTM C29/C29M- Test Method for Bulk Density (Unit Weight) and Void in aggregates 
  • ASTM C33/C33M-13- Standard Specification for Concrete Aggregates.
  • ASTM C40- Organic Impurities in Fine Aggregate for Concrete 
  • ASTM C75/C75M-13- Standard Practice for Sampling Aggregates by the use of Sodium Sulfate or Magnesium Sulfate.
  • ASTM C117/ AASHTO T11  - Materials Finer Than 75-µm (No. 200) Sieve in Mineral Aggregates by Washing
  • ASTM C127/ AASHTO T85 - Specific Gravity and Absorption of Coarse Aggregate
  • ASTM C128/ AASHTO T84 - Specific Gravity and Absorption of Fine Aggregate
  • ASTM C131 – Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact

In the Los Angeles Machine

  • ASTM C136/ AASHTO T27 - Sieve Analysis of Fine & Coarse Aggregates
  • ASTM C702/ AASHTO T248 - Reducing Samples Of Aggregate To Testing Size
  • ASTM C566/ AASHTO T255 - Total Evaporable Moisture Content of Aggregate by Drying
  • ASTM D 75/ AASHTO T2 - Sampling of Aggregate
  • ASTM- D448-12- Standard Classification for sizes of Aggregate for road and bridge constructions.
  • ASTM D5821- Test Method for Determining the percentage of fractured particles in coarse aggregates.

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