Aggregate & Concrete Testing

ASTM C 29/AASHTO T 19: Standard Test Method for Bulk Density ("Unit Weight") and Voids in Aggregates

This test method covers the determination of bulk density ("unit weight") of aggregate in a compacted or loose condition, and calculated voids between particles in fine, coarse, or mixed aggregates based on the same determination. This test method is applicable to aggregates not exceeding 5 in. (125 mm) in nominal maximum size.

ASTM C 40: Standard Test Method for Organic Impurities in Fine Aggregates for Concrete

This test method covers procedures for an approximate determination of the presence of injurious organic impurities in fine aggregates that are to be used in hydraulic cement mortar or concrete.

ASTM C 127/AASHTO T 85: Standard Test Method for Specific Gravity and Absorption of Coarse Aggregate

This test method covers the determination of specific gravity and absorption of coarse aggregate. The specific gravity may be expressed as bulk specific gravity, bulk specific gravity (SSD) (saturated-surface-dry), or apparent specific gravity. The bulk specific gravity (SSD) and absorption are based on aggregate after 24 hour soaking in water. This test method is not intended to be used with lightweight aggregates.

ASTM C 128/AASHTO T 84: Standard Test Method for Specific Gravity and Absorption of Fine Aggregate

This test method covers the determination of bulk and apparent specific gravity, 23/23°C (73.4/73.4°F), and absorption of fine aggregate. This test method also determines (after 24 hours in water) the bulk specific gravity and the apparent specific gravity, the bulk specific gravity on the basis of weight of saturated surface-dry aggregate, and absorption.

ASTM C 131/AASHTO T 96: Standard Test Method for Resistance to Degradation of Small-Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine

This test method covers a procedure for testing sizes of coarse aggregate smaller than 37.5 mm (1 1/2 in.) for resistance to degradation using the Los Angeles testing machine.

ASTM C 136/AASHTO T 27; Standard Test Method for Sieve Analysis of Fine and Coarse Aggregates

This test method covers the determination of the particle size distribution of fine and coarse aggregates by sieving. A sample of dry aggregate of known mass is separated through a series of sieves of progressively smaller openings for determination of particle size distribution.

AASHTO T 103: Soundness of Aggregates by Freezing and Thawing

This test method covers three procedures in testing aggregates to determine their resistance to disintegration by freezing and thawing. It furnishes information helpful in judging the soundness of aggregates subjected to weathering, particularly when adequate information is not available from service records of the behavior of the aggregate.

ASTM C 88/AASHTO T 104: Soundness of Aggregate by Use of Sodium Sulfate or Magnesium Sulfate

This test method covers the procedure to be followed in testing aggregates to determine their resistance to disintegration by saturated solutions of sodium sulfate or magnesium sulfate. This is accomplished by repeated immersion in saturated solutions of sodium or magnesium sulfate followed by oven drying to partially or completely dehydrate the salt precipitated in permeable pore spaces. The internal expansive force, derived from the rehydration of the salt upon immersion, simulates the expansion of water on freezing. NOTE: this test method furnishes information helpful in judging the soundness of aggregates subject to weathering action, particularly when adequate information is not available from service records of the material exposed to actual weathering conditions.

ASTM D 7012 (formerly ASTM D 2938): Standard Test Method for Compressive Strength and Elastic Moduli of Intact Rock Core Specimens under Varying States of Stress and Temperatures

This test method covers the determination of the strength of intact rock core specimens in uniaxial compression and confined compression. The tests provide data in determining the strength of rock, namely: the uniaxial strength, shear strengths at varying pressures and varying temperatures, angle of internal friction, (angle of shearing resistance), and cohesion intercept. The test method specifies the apparatus, instrumentation, and procedures for determining the stress-axial strain and the stress-lateral strain curves, as well as Young's modulus, E, and Poisson's ratio, y. It should be observed that this method makes no provision for pore pressure measurements and specimens are undrained (platens are not vented). Thus the strength values determined are in terms of total stress, that is, are not corrected for pore pressures. This test method does not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength.

ASTM D 4543: Standard Practices for Preparing Rock Core Specimens and Determining Dimensional and Shape Tolerances

This practice specifies procedures for laboratory specimen preparation and determining the length and diameter of rock core specimens and the conformance of the dimensions with established standards.

ASTM C 39: Standard Test Method for Compressive Strength of Cylindrical Concrete Specimens

This test method covers determination of compressive strength of cylindrical concrete specimens such as molded cylinders and drilled cores. It is limited to concrete having a unit weight in excess of 50 lb/ft3 [800 kg/m3].

ASTM C 78: Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading)

This test method covers the determination of the flexural strength of concrete by the use of a simple beam with third-point loading.

ASTM C 293: Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Center-Point Loading)

This test method covers determination of the flexural strength of concrete specimens by the use of a simple beam with center-point loading. It is not an alternative to Test Method C78.