Accredited Materials Testing Laboratory

Concrete Research & Testing is AASHTO accredited as both a Concrete Testing Laboratory and an Aggregate Testing Laboratory. CRT is capable of performing most standard ASTM tests involving concrete, aggregate, mortar or cementitious material. Limited testing per AASHTO specification is also available. Our laboratory technicians are certified through the American Concrete Institute (ACI) as Concrete Field Testing Technicians and Concrete Laboratory Testing Technicians. CRT technicians are also certified through the Ohio Ready Mix Concrete Association (ORMCA) as Concrete Technicians.

ASTM & AASHTO Tests performed by CRT


ASTM C39 Compressive Strength of Cylindrical Concrete Specimens
ASTM C42 Obtaining and Testing Drilled Cores and Sawed Beams of Concrete
ASTM C78 Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)
ASTM C157 Length Change of Hardened Hydraulic-Cement Mortar and Concrete
ASTM C293 Flexural Strength of Concrete (Using Simple Beam With Center-Point Loading)
ASTM C341 Length Change of Drilled or Sawed Specimens of Hydraulic-Cement Mortar and Concrete
ASTM C457 Microscopical Determination of Parameters of the Air-Void System in Hardened Concrete
ASTM C496 Splitting Tensile Strength of Cylindrical Concrete Specimens
ASTM C617 Capping Cylindrical Concrete Specimens
ASTM C642 Specific Gravity Absorption and Voids in Hardened Concrete
ASTM C672 Scaling Resistance of Concrete Surfaces Exposed to Deicing Chemicals
ASTM C805 Rebound Number of Hardened Concrete
ASTM C856 Petrographic Examination of Hardened Concrete
ASTM C878 Restrained Expansion of Shrinkage-Compensating Concrete
ASTM C1152 Acid-Soluble Chloride in Mortar and Concrete
ASTM C1202 Electrical Indication of Concrete’s Ability to Resist Chloride Ion Penetration
ASTM C1218 Water-Soluble Chloride in Mortar and Concrete
ASTM C1293 Length Change of Concrete Due to Alkali-Silica Reaction
ASTM C1556 Apparent Chloride Diffusion Coefficient of Cementitious Mixtures by Bulk Diffusion
ASTM C1585 Measurement of Rate of Absorption of Water by Hydraulic-Cement Concretes


ASTM C109 Compressive Strength of Hydraulic Cement Mortars (Using 2 in. Cube Specimens)
ASTM C185 Air Content of Hydraulic Cement Mortar
ASTM C187 Normal Consistency of Hydraulic Cement
ASTM C191 Time of Setting of Hydraulic Cement by Vicat Needle
ASTM C452 Potential Expansion of Portland-Cement Mortars Exposed to Sulfate
ASTM C596 Drying Shrinkage of Mortars Containing Portland Cement
ASTM C806 Restrained Expansion of Expansive Cement Mortars
ASTM C1012 Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution
ASTM C1038 Expansion of Portland Cement Mortar Bars Stored in Water


ASTM C31 Making and Curing Concrete Test Specimens in the Field
ASTM C138 Unit Weight, Yield, and Air Content (Gravimetric) of Concrete
ASTM C143 Slump of Hydraulic Cement Concrete
ASTM C173 Air Content of Freshly Mixed Concrete by the Volumetric Method
ASTM C192 Making and Curing Concrete Specimens
ASTM C231 Air Content of Freshly Mixed Concrete by the Pressure Method
ASTM C232 Bleeding of Concrete
ASTM C403 Time of Setting of Concrete Mixtures by Penetration Resistance


ASTM C29 Unit Weight and Voids in Aggregate
ASTM C40 Organic Impurities in Fine Aggregates for Concrete
ASTM C70 Surface Moisture in Fine Aggregate
ASTM C88 Soundness of Aggregates by Use of Sodium Sulfate or Magnesium Sulfate
ASTM C117 Materials Finer than No. 200 Sieve in Mineral Aggregates by Washing
ASTM C127 Specific Gravity and Absorption of Coarse Aggregate
ASTM C128 Specific Gravity and Absorption of Fine Aggregate
ASTM C136 Sieve Analysis of Fine and Coarse Aggregate
ASTM C142 Clay Lumps and Friable Particles in Aggregates
ASTM C227 Potential Alkali Reactivity of Cement-Aggregate Combinations (Mortar-Bar Method)
ASTM C295 Petrographic Examination of Aggregates for Concrete
ASTM C566 Total Moisture Content of Aggregates by Drying
ASTM C586 Potential Alkali Reactivity of Carbonate Rocks as Concrete Aggregates (Rock-Cylinder Method)
ASTM C1105 Length Change of Concrete Due to Alkali-Carbonate Rock Reaction
ASTM C1252 Uncompacted Void Content of Fine Aggregate
ASTM C1260 Potential Alkali Reactivity of Aggregates (Mortar-Bar Method)
ASTM C1293 Length Change of Concrete Due to Alkali-Silica Reaction
ASTM C1567 Potential Alkali Reactivity of Combinations of Cementitious Materials and Aggregates
ASTM D3042 Insoluble Residue in Carbonate Aggregates


ASTM C99 Modulus of Rupture of Dimension Stone
ASTM C170 Compressive Strength of Dimension Stone
ASTM C1721 Petrographic Examination of Dimension Stone


AASHTO T259 Resistance of Concrete to Chloride Ion Penetration
AASHTO T260 Sampling and Testing for Chloride Ion in Concrete and Concrete Raw Materials
AASHTO T277 Rapid Determination of the Chloride Permeability of Concrete