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Landfill GCL Test Standard Update

ASTM Committee D35-04 have just released an updated test method.
ASTM D5890-18 - Standard Test Method for Swell Index of Clay Mineral Component of Geosynthetic Clay Liners.

The important feature of this updated test method is that the Swell Index of the clay mineral component of the Geosynthetic Clay Liner must be carried out on the source bentonite prior to the addition of polymers.
The ASTM committee recognised that the addition of polymers can significantly affect the Swell Index determined (increase) when tested under the superseded test method and which had the potential to allow the use of sub-optimal bentonites to be used in the manufacture of product.

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Global Synthetics is a leading independent distributor and manufacturer of a wide range of geosynthetics to the engineering, construction, landscape & building industries throughout Australia & the Pacific region. Global Synthetics products include Bentofix® GCL, geogrids, geotextiles, subsoil drains, erosion control blankets, wick drains, dewatering tubes and more.

Our qualified staff and experienced engineers have a wealth of experience in providing proven, cost effective solutions to Environmental, Civil Engineering and Hydraulic problems.

Landfill GCL Test Standard Update

ASTM Committee D35-04 have just released an updated test method. ASTM D5890-18 - Standard Test Method for Swell Index of Clay Mineral Component of Geosynthetic Clay Liners. The important feature of this updated test method is that the Swell Index of the clay mineral component of the Geosynthetic Clay Liner must be carried out on the source bentonite prior to the addition of polymers.

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The Importance of Liner Protection and Cushioning

Geotextile, when used as a protection layer acts as a cushioning barrier between a geosynthetic lining system such as in a dam or landfill cell.

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