Aussie Trenchless PST the way to go

On full display at No-Dig 2022, were Aussie Trenchless’ innovative Pipe Segment Technology (PST). An innovative lining system that offers a range of benefits including simple self-perform installation, constructed from transparent material and is suitable for live loads, such as under road culverts and rail networks.

Headquartered in New South Wales, the company offers a range of unique products in Australia and overseas. Aussie Trenchless Director Chris Meredith and the team are committed to pioneering state-of-the-art solutions and furthering business in the trenchless industry. 

“The opportunity to exhibit at NO-DIG 2022 allowed the industry to again get together and exchange ideas,” says Meredith. 

“New products were on display and many old friends attended the conference; the feeling around the conference was upbeat and optimistic with all parties looking forward to the future and leaving the pass behind.

“I see the trenchless industry only expanding playing a vital role in solutions that will benefit society.”

PST is one solution for pipe rehabilitation that is easy to build and quick to install. Aussie Trenchless’ pipe segment technology is a segmental pipe rehabilitation system specifically designed for traversable trunk sewers, stormwater culverts and maintenance holes.  Pipe lining technologies such as PST have the capacity to substantially increase the service life of pipes and is an ideal method for man-entry pipeline rehabilitation, particularly for gravity sewer mains. 

“The PST grouting process will treat external soil void issue as an inherent part of the rehabilitation process,” says Meredith.

Aussie Trenchless has been working to trial the PST in maintenance holes as part of a pilot project in manhole rehabilitation. The goal is to monitor the performance of the PST when used for similar rehabilitation projects over time before rolling their maintenance hole refurbishment program out. While PST has not been used to rehabilitate a maintenance holes before, Aussie Trenchless has been the first to adapt and innovate on the technology. 

“What makes this PST unique is that you can access the maintenance hole and complete all work through its existing lid as well as seal all maintenance hole wall faults using a high flow cementitious grout,” says Meredith. 

“It is also possible to fill external voids in soil matrix and seal the maintenance hole bench areas as the grout exfiltrates out through the maintenance hole walls.” 

PST lining panels are made of polypropylene material, providing a smooth surface with effective hydraulic performance capacities. The panels are lightweight, easy to install and ideal for positioning in confined and tight space, the product being designed to be suitable for all pipe types. Segment pipe rehabilitation technologies are recommended for sewers with complex or non-standard shapes. Additionally, the ring stiffness of PST can be enhanced or altered by attaching circumferential bars, making the product suitable for installing in sewers of various depths. This is possible due to PST being a nimble segmental lining system featuring a grouted annulus gap, making it versatile in tight access locations.

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