Accurate Group is certified to provide construction materials testing and inspection. Our professional engineering staff and highly qualified engineering technicians help our clients meet their control needs. Our material testing services include:
 

Laboratory testing of Soils, concrete and asphalt
Field testing of soils, concrete and asphalt
Concrete mix design
Soil compaction and inspection
Bearing capacity inspection
On site inspection of construction activities
Documentation
Proof rolling inspection
Test borings
Controlled fill placement
Documentation survey (video / photograph)

Our in-house state-of-the-art laboratory provides soils, asphalt and concrete testing, and has been inspected by AMRL and CCRL for accreditation. We conduct test procedures in accordance with the following agencies:

Illinois Department of Transportation
American Concrete Institute
Asphalt Institute
American Association of State Highway Officials
American Society for Testing and Materials


Aggregate


T19 /C29 Standard Test Method for Bulk Density ("Unit Weight") and Voids in Aggregate
C40 Standard Test Method for Organic Impurities in Fine Aggregates for Concrete
T11 /C117 Standard Test Method for Materials Finer than 75-µm (No. 200) Sieve in Mineral Aggregates by Washing
T85 /C127 Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Coarse Aggregate
T84 /C128 Standard Test Method for Density, Relative Density (Specific Gravity), and Absorption of Fine Aggregate
T27 /C136 Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates
T255 /C566 Standard Test Method for Total Evaporable Moisture Content of Aggregate by Drying
T248 /C702 Standard Practice for Reducing Samples of Aggregate to Testing Size
C1077 Standard Practice for Laboratories Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Laboratory Evaluation


Concrete


C31 Standard Practice for Making and Curing Concrete Test Specimens in the Field
C39 Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens
C78 Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)
C138 Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravimetric) of Concrete
C143 Standard Test Method for Slump of Hydraulic Cement Concrete
C172 Standard Practice for Sampling Freshly Mixed Concrete
C231 Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method
C1064 Standard Test Method for Temperature of Freshly Mixed Portland Cement Concrete
C1077 Standard Practice for Laboratories Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Laboratory Evaluation
C1231 Standard Practice for Use of Unbonded Caps in Determination of Compressive Strength of Hardened Concrete Cylinders


Hot Mix Ashpalt


T30 /D5444 Standard Test Method for Mechanical Size Analysis of Extracted Aggregate
T164 /D2172 Standard Test Methods for Quantitative Extraction of Bitumen From Bituminous Paving Mixtures
T166 /D2726 Standard Method of Test for Bulk Specific Gravity of Compacted Hot Mix Asphalt (HMA) Using Saturated Surface-Dry Specimens
T 209 /D2041 Standard Test Method for Theoretical Maximum Specific Gravity and Density of Bituminous Paving Mixtures
T245 /D6926 Marshall Method Preparation
T269 /D3203 Standard Method for Determining Percent Air Voids in Bituminous Paving Mixtures
T287 /D1125 Standard Method for Determining Asphalt Content of Bituminous Mixtures by the Nuclear Method
T308 /D6307 Standard Method for Determining Asphalt Binder Content of Hot Mix Asphalt (HMA) by Ignition Method
T312 /D6925 Standard Method for Preparing and Determining the Density of Hot Mix Asphalt. (HMA) Specimens by Means of the Superpave Gyratory Compactor
T329 Moisture Content of Hot-Mix Asphalt