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Homepage>BS Standards>93 CIVIL ENGINEERING>93.020 Earthworks. Excavations. Foundation construction. Underground works>20/30419951 DC BS EN 17542-3. Earthworks. Geotechnical laboratory tests Part 3. Methylene blue value VBS on soils and rocks
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20/30419951 DC BS EN 17542-3. Earthworks. Geotechnical laboratory tests Part 3. Methylene blue value VBS on soils and rocks

20/30419951 DC

BS EN 17542-3. Earthworks. Geotechnical laboratory tests Part 3. Methylene blue value VBS on soils and rocks

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Standard number:20/30419951 DC
Pages:14
Released:2020-07-09
Status:Draft for Comment
DESCRIPTION

20/30419951 DC


This standard 20/30419951 DC BS EN 17542-3. Earthworks. Geotechnical laboratory tests is classified in these ICS categories:
  • 93.020 Earthworks. Excavations. Foundation construction. Underground works

This document describes the reference method for the determination of the methylene blue value (VBS) in soils and rocks for earthworks.

The test is based on measuring the quantity of methylene blue that can be adsorbed by the material suspended in water. This quantity of absorbed methylene blue is reported by direct proportionality to the 0/50 mm ground. The soil blue value is directly related to the specific surface area of the soil particles or rocky material.

NOTE

The VBS test uses common equipment and calibration as the methylene blue test MB for aggregates (EN 933‑9), but the test applies to another granular fraction (5 mm for VBS and 2 mm for MB, respectively). Thus, the results obtained between the two tests cannot be compared in the general case.