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Petrochemical Lining

Product Applications » Concrete Ring Beams

Concrete Ring Beams
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1. The tank ring beam is in-filled with concrete or compacted sand to within 200-300mm of the top of the beam, a RAWSEAL® TR35 fillet is bedded in Rawpaste Mastic at the 90° angle around the circumference of the tank.
Concrete Ring Beams
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2. The RAWMAT® HDB membrane is laid across the concrete/sand floor within the ring beam.
Concrete Ring Beams
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3. The rolls of RAWMAT® HDB are laid and overlapped following the lap lines marked on the rolls.
Concrete Ring Beams
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4. The tank base is covered fully with the RAWMAT® HDB membrane and sealed to the ring beam.
Concrete Ring Beams
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5. Once sealed to the tell-tale an additional patch of RAWMAT® HDB is sealed to pipe and the main sheet of RAWMAT® HDB then sealed further with Rawpaste mastic.
Concrete Ring Beams
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6. The sealed pipe provides protection against uncontrolled leakage at the pipes.
Concrete Ring Beams
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7. The 150mm overlaps between the sheets are sealed by the application of Rawpaste Mastic to the black geotextile before sealing the joint.
Concrete Ring Beams
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8. Once all overlaps have been sealed and tell-tales secured the tank base is ready for the placement of the backfill.
Concrete Ring Beams
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9. 200-300mm of compacted sand is placed over the RAWMAT® HDB membrane prior to the placement of the bitsand layer and the tank base plate.
Concrete Ring Beams
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10. Bitsand layer placed awaiting placement of tank.