Aggregate Particle Size
Testing services for your products and materials
Aggregate Particle Size Testing
|Property||Material||ASTM / Method||Details|
|Material Finer Than #200 Sieve by Washing||Aggregate / Soil||ASTM C117|
Material Finer Than #200 Sieve by Washing
A representative portion of the sample is oven dried and then washed over a #200 wash sieve. Resulting material is then oven dried again, and the resulting mass is compared to the original to determine the percent of the sample that is finer than the #200 sieve.
|Sieve Analysis (Fraction >#200 Sieve)||Aggregate||ASTM C136|
Particle Size Distribution of Aggregate Using the Sieve Analysis
Soil is dried and sieved through the standard sieve stack (per ASTM C33) to provide a grain-size distribution curve. Aggregate may be compared to any specificaiton provided to determine if it conforms.
|Sand Equivalent Value||Aggregate / Soil||ASTM D2419|
Sand Equivalent Value of Soils and Fine Aggregates
Soil is dispersed with a calcium chloride solution in a calibrated graduated cylinder using a special irrigation tube. The settling of the sample in the cylinder is observed. Observed levels are used to calculate the sand equivalent value for the material.
|Sieve Analysis (Fraction >#200 Sieve)||Soil||ASTM D6913|
Particle Size Distribution of Soil Using the Sieve Analysis
Soil is dried and sieved through the standard sieve stack (per ASTM D6913) to provide a grain-size distribution curve. Soil may be compared to any specificaiton provided to determine if it conforms.
|Particle Size Analysis – Silt / Clay Content (includes fraction <#200 sieve)||Soil||ASTM D7928 Hydrometer|
Particle Size Distribution of Fine-Grained Soil Using the Hydrometer Analysis
Soil is air dried, then the fine fraction is suspended in water with the aid of a dispersion agent. A standard soil hydrometer is used to determine the density of the resulting liquid over a period of 1 day. Hydrometer readings are used to generate a grain-size distribution curve for the silt and clay portions of soils that are too small for the typical sieve analysis.
|Petrographic Examination||Aggregate||ASTM C295|
Petrographic Examination of Aggregates Intended for Concrete
Performed by an expert in petrography and aggregates. Returns a wide variety of useful information regarding material properties, chemical composition, expected performance, etc.. This procedure focuses on the aggregate’s viability for use in concrete.
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