Project Reference: MasterFlow - Liquefied natural gas (LNG) Shore Trunkline Microtunnel
Source: Chevron
Location: Wheatsone Project, Onslow, Western Australia
Applicator/Contractor: Subcon Technologies Pty Ltd, Dredging International Australia
Market sector: Energy
Products used: MasterFlow 700 cementitious, non-shrink construction grout which undergoes controlled expansion in the plastic state
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The Background
The Challenge
Our Solution
Project Facts at a Glance
- The project was in the design phase for almost two years, the actual placement of the grout was completed in 36 hours.
- Two mock-up trials were also conducted before the final application of the grout.
- The project now boasts the first-ever microtunnel plug installed worldwide.
Product Facts at a Glance
- MasterFlow 700 is a Class A grout generally used in applications requiring a grout thickness between 10mm and 100mm
- It is a ready-to-use premixed grout that only requires the addition of mixing water on site
- It is economical due to its ease of use and flowable properties
- It has a low water/cement ratio therefore reducing drying shrinkage and increasing durability
The Customer's Benefit
- A difficult project was delivered on time and within budget.
- The on-site costs to the customer were reduced due to the speed of the pour (36 hours non-stop).
- The grout plug provided the trunkline with an anchor that was impermeable to tides and intermittent water and air ingress, improving the durability and life cycle of the structure.
- The solution reduced the possibility of future corrosion costs.
The Wheatstone Project is located in close proximity to an important whale shark breeding ground, meaning various environmental factors needed to be considered when developing Master Builders Solutions' grout delivery system.
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