Aggregate Physical Testing

Testing services for your products and materials

Property	Material	ASTM / Method	Details
Abrasion / Impact Resistance	Coarse Aggregate	ASTM C131	Resistance to Degradation of Small Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine Aggregate is dried and graded per ASTM C131 requirements. The sample is then added to the LA Abrasion Machine, multiple steel spheres (“charges”) are added, and then the machine completes 500 revolutions. The resulting sample is then washed and sieved to determine the level of degredation experienced, expressed as a mass loss %.
Abrasion / Impact Resistance	Large Coarse Aggregate	ASTM 535	Resistance to Degradation of Large Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine Aggregate is dried and graded per ASTM C535 requirements. The sample is then added to the LA Abrasion Machine, multiple steel spheres (“charges”) are added, and then the machine completes 500 revolutions. The resulting sample is then washed and sieved to determine the level of degredation experienced, expressed as a mass loss %.
Clay Lumps / Friable Particles	Aggregate	ASTM C142	Percentage of Clay Lumps and Friable Particles in Aggregates Aggregate is dried and graded per ASTM C142, then submerged in distilled water for 24 hours. Material is gently handled to break up all clay lumps and friable particles. Detritus is washed away, and the resulting mass of dried sample is used to determine the percentage of clay lumps and/or friable particles that were washed away.

Property

Material

ASTM / Method

Details

Abrasion / Impact Resistance

Coarse Aggregate

ASTM C131

Resistance to Degradation of Small Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine

Aggregate is dried and graded per ASTM C131 requirements. The sample is then added to the LA Abrasion Machine, multiple steel spheres (“charges”) are added, and then the machine completes 500 revolutions. The resulting sample is then washed and sieved to determine the level of degredation experienced, expressed as a mass loss %.

Abrasion / Impact Resistance

Large Coarse Aggregate

ASTM 535

Resistance to Degradation of Large Size Coarse Aggregate by Abrasion and Impact in the Los Angeles Machine

Aggregate is dried and graded per ASTM C535 requirements. The sample is then added to the LA Abrasion Machine, multiple steel spheres (“charges”) are added, and then the machine completes 500 revolutions. The resulting sample is then washed and sieved to determine the level of degredation experienced, expressed as a mass loss %.

Clay Lumps / Friable Particles

Aggregate

ASTM C142

Percentage of Clay Lumps and Friable Particles in Aggregates

Aggregate is dried and graded per ASTM C142, then submerged in distilled water for 24 hours. Material is gently handled to break up all clay lumps and friable particles. Detritus is washed away, and the resulting mass of dried sample is used to determine the percentage of clay lumps and/or friable particles that were washed away.

Specifications and test plans for aggregate physical testing:

ASTM C33 – Concrete Aggregates: Specification
ASTM C94 – Ready-Mixed Concrete: Specification

Test methods for aggregate physical testing:

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