Grouted HDPE Corrosion Protection Linings—The Silver Bullet - Bluey Technologies Water authorities have been specifying spray on membranes to remediate corroded underground concrete structures in their sewerage networks for many years. Epoxy and PUR membranes display excellent chemical resistance and structural stability tested in controlled application conditions. However, the membrane’s integrity and bond to the substrate is often compromised in the field due to their incompatibility with moist environments and other difficult mixing and application conditions. This can result in premature failure. Alternatively, HDPE corrosion protection linings have the same excellent chemical resistance as epoxies and can be safely secured into a concrete structure using an engineered grouting system. This process includes proof testing grout bond in the cleaned structure walls prior to installation, compression testing of the mixed grout and sounding of the finished surface and pull testing of the cast-in HDPE anchors. The high flow, high strength, grouts have zero bleed and are compatible with damp surfaces. An example of a HDPE corrosion protection lining is BluSeal AKS - Anchor Knob Sheet which has been used to remediate concrete sewerage structures for more than a decade. The polyethylene sheet only requires installation and extrusion welding to form a durable, chemically resistant concrete protection membrane that provides a 100 year extended service life solution. Over the past ten years Bluey has partnered with approved applicators across Australia to develop the post-grouted process using BluSeal AKS, including comprehensive sealing methods around pipe penetrations, ladders, platforms and more. Dormway Contractors are an approved applicator at the forefront of this development work, especially with regard to smart, strong formwork systems, utilising ISO9001 construction processes. Authorities are now recognising BluSeal AKS as a cost-effective remediation solution when considering whole of life cost.
Bluey Technologies Pty Ltd Web: www.bluey.com.au Phone: 1300 0 BLUEY
The images to the right depict the competed works in South East Queensland work by one of Bluey’s approved applicators.
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