Aggregate Laboratory

Aggregates make up the largest volume (66% to 78%) of material used in concrete.  The aggregates must be clean, properly graded, hard, strong, durable, and free from chemicals or coatings of clay or other foreign materials that may inhibit the bond between the cement and aggregate.  Testing must be performed to make sure that the aggregate meets all these criteria.  Our clients depend on us to help them with aggregate selection and quality control.

” We offer a full range of aggregate testing and capabilities. Our expertise allows us to use the information gained from testing to help develop concrete and mortar mix designs.”


Our Accreditations

Our laboratory accreditations include ISO 17025, AASHTO R18 and we are and approved laboratory for the US Army Corps of Engineers.

Our employees are active members in ACI, ASTM, ICRI, FRCA, ASCE and SWRI. Several TEC Services employees are current or past committee members, committee chairs, board members and presidents of these organizations in local and national chapters.

We work closely with ASTM in the development of aggregate test methods, testing guidelines and specifications.


Our Aggregate Laboratory performs a wide range of the testing on aggregates.Some of the testing we perform is referenced below. This list consists of tests that we perform on a regular basis. If a test is desired that is not listed below, please call and inquire for further details.

ASTM C29 Test Method for Bulk Density (“Unit Weight”) and Voids in Aggregate
Standard Specification for Concrete Aggregates
Standard Test Method for Organic Impurities in Fine Aggregates for Concrete
ASTM C87 Test Method for Effect of Organic Impurities in Fine Aggregate on Strength of Mortar
Standard Test Method for Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate
Standard Test Method for Materials Finer than 75-μm (No. 200) Sieve in Mineral Aggregates by Washing
Standard Test Method for Lightweight Particles in Aggregate
Standard Test Method for Relative Density (Specific Gravity) and Absorption of Coarse Aggregate
Standard Test Method for the Relative Density (Specific Gravity) and Absorption of Fine Aggregate
Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates
Standard Test Method for Clay Lumps and Friable Particles in Aggregates
Petrographic Examination of Aggregates for Concrete
Standard Specification for Lightweight Aggregates for Structural Concrete
Standard Specification for Lightweight Aggregates for Concrete Masonry Units
Standard Test Method for Resistance to Degradation of Large-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine
Total Moisture Content of Aggregate by Drying
ASTM C586
Test Method for Potential Alkali Reactivity of Carbonate Rocks as Concrete Aggregates
ASTM C641
Iron Staining Material in Lightweight Concrete Aggregate
ASTM C702
Reducing Samples of Aggregate to Testing Size
ASTM C1077
Standard Practice for Agencies Testing Concrete and Concrete Aggregates
ASTM C1105
Length Change of Concrete Due to Alkali-Carbonate Rock Reaction
ASTM C1252
Uncompacted Void Content of Fine Aggregate (Influenced by shape, texture, and grading)
ASTM C1260
Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
ASTM C1293 Standard Test Method for Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
Determining the Potential Alkali-Silica Reactivity of Combinations of Cementitious Materials and Aggregate
(accelerated mortar-bar method)
ASTM D75
Practice for Sampling Aggregates
ASTM D4791
Flat Particles, Elongated Particles, or Flat and Elongated Particles in Coarse Aggregate
ASTM D5240
Evaluation of Durability of Rock for Erosion Control Using Sodium Sulfate or Magnesium Sulfate
ASTM D5312
Evaluation of Durability of Rock for Erosion Control Under Freezing and Thawing Conditions
ASTM D5313
Durability of Rock for Erosion Control Under Wetting and Drying Conditions
ASTM D5821
Determining the Percentage of Fractured Particles in Coarse Aggregate
ASTM E329
Standard Specification for Agencies Engaged in the Testing and/or Inspection of Materials Used in Construction
ASTM R18
Establishing and Implementing a Quality System for Construction Materials Testing Laboratories
ISO/TEC 17025
General Requirements for the Competence of Testing and Calibration of Laboratories