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Petrochemical Lining

Product Applications » Earthen Walled Bunds

Earthen Walled Bunds
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1. The earth walls and bund floor can be re-lined using the RAWMAT® HDB system without the need for costly removal of contaminated materials off-site.
Earthen Walled Bunds
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2. Trim to provide a smooth, void-free surface onto which the RAWMAT® HDB can be laid. Excavate a 500mm x 500mm anchor trench at the top of the dyke. Run 2000mm onto floor of bund.
Earthen Walled Bunds
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3. RAWMAT® HDB secured into anchor trench at the top of the berm.
Earthen Walled Bunds
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4. Rawgrid placed over RAWMAT® HDB for additional slope stability.
Earthen Walled Bunds
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5. Rolls of RAWMAT® HDB rolled across the prepared formation of stripped clay, as installation progresses across the bund floor the next area of stripped clay is placed over the RAWMAT® HDB.
Earthen Walled Bunds
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6. RAWMAT® HDB and Rawgrid backfilled and thoroughly compacted.
Earthen Walled Bunds
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7. RAWMAT® HDB continues to be laid to the prepared berm and bund floor.
Earthen Walled Bunds
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8. RAWMAT® HDB fixed to pipe support through termination bar.
Earthen Walled Bunds
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9. Overlaps in RAWMAT® HDB sealed with Rawpaste Mastic.
Earthen Walled Bunds
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10. Compacting 300mm cover layer over the RAWMAT® HDB membrane.
Earthen Walled Bunds
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11. Completed bund after re-lining with RAWMAT® HDB.
Earthen Walled Bunds
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12. Completed bund with vegetation re-established on berms of bund and gravel layer placed over clay confining material.