Rangipo Dam, NZ

Project Overview:

The Tongariro Power Scheme is a 360 MW hydroelectricity scheme in the central North Island of New Zealand. The scheme is currently operated by electricity generation company Genesis Energy.

There are 3 power stations in the Tongariro Power Scheme; Mangaio, Rangipo and Tokaanu. Combined, these 3 hydro electric dams produce 3.5% of New Zealand’s total electricity.

The video below gives a good overview of the extensive infrastructure that makes up the Tongariro Power Scheme.

Project Details:

Earlier this year, Rockbond supplied concrete remediation solutions to two different repair projects at the Rangipo Hydro Dam on the Desert Road, Central North Island.

We worked with Jack and the Team from Surfprep on the repairs to the Poutu Intake Tunnel, which had some interesting challenges!

The scope of works consisted of concrete erosion repairs to the 3km long tunnel, there were approximately 25 isolated repairs completed using Rockbond’s 1.06 micro concrete, with the biggest repair being 1.5m3.

All of which were completed within a shutdown period of 5 weeks.

This challenging environment included low temperature, constant ground water ingress and all materials/equipment needing to be lowered down a ventilation shaft 1.5m diameter and 15m deep.

Heading into a cold winter on the Desert Road, the temps are anything but accommodating for standard concrete repairs, so Rockbond’s A301 powder accelerating admix was used to achieve the strengths required in the tight timeframe.

Rockbond and Surfprep worked closely with the Genesis Energy engineers and the head contractor Connell Contractors to provide repair solutions that could be applied in these difficult conditions and within the tight timeframe before the tunnel needed to be back in use…while still providing high abrasion resistance and resilience for the harsh treatment that this tunnel (like all hydro tunnels) will get over the coming years.

The Surfprep and Connell Contractor partnership went on to win the Waikato Civil Construction Award for the work they carried out on this iconic project!….

Congratulations Surfprep & Connell Contractors!

Rockbond also supplied product to Kat & the Team from Map Projects, who were carrying out remediation work on the Rangipo Intake structure.

Key Products Used:

6.03 A301 Accelerating Powder

1.06 Micro Concrete

 8.09 Epoxy RMT

Project Partner: 

Surfprep

Map Projects

Genesis Energy 

Connell Contractors

ROCKBOND

Freephone
0800 76 25 26
Phone
04 568 5401
Email
sales@rockbond.co.nz

Address
7 Te Puni Street, Petone
PO Box 38 526
Wellington 5045

Level 2/40 Lady Elizabeth Lane
Wellington Central
Wellington 6011

43 Poturi Street
Tauriko
Tauranga 3110


ENQUIRE

DON'T MISS OUT!

Sign up for Rockbond's Monthly e-Newsletter for the latest news, products, and projects.

ROCKBOND

Freephone
0800 76 25 26
Phone
04 568 5401
Email
sales@rockbond.co.nz

Address
7 Te Puni Street, Petone
PO Box 38 526
Wellington 5045

ENQUIRE

DON'T MISS OUT!

Sign up for Rockbond's Monthly e-Newsletter for the latest news, products, and projects.