Concrete Repair

𝙏𝙚𝙖𝙢𝙬𝙤𝙧𝙠 – 𝙒𝙝𝙚𝙧𝙚 𝙘𝙤𝙡𝙡𝙖𝙗𝙤𝙧𝙖𝙩𝙞𝙤𝙣, 𝙞𝙣𝙩𝙚𝙜𝙧𝙞𝙩𝙮 𝙖𝙣𝙙 𝙘𝙖𝙧𝙚 𝙙𝙚𝙡𝙞𝙫𝙚𝙧 𝙨𝙪𝙘𝙘𝙚𝙨𝙨. Concrete repair works are well underway on the walls of this leachate tank to improve the durability and wear characteristics of the concrete surface and help prevent the development of a corrosive environment for the reinforcing steel. Here’s a little video snippet of our team removing unsound concrete as part of the steps in concrete repair work.

CONCRETE CANCER REPAIR WORKS – HOW WE DO IT AND OUR RECOMMENDATIONS:

Visual signs:

• Flaking, spalling concrete
• Rust Stains leaking out of the concrete
• Bubbling, blistering, plating of concrete render
• Leaks in overhead concrete surfaces
• Rusting and exposed reinforcement pushing concrete to become loose

The typical method of concrete cancer repair follows a process of:

1. Break out unsound concrete and expose reinforcing steel until sound concrete and clean non-corroded steel reinforcing are found.
2. Saw cut repair zone perimeter to eliminate feather edges.
3. The concrete around the reinforcing steel is chiselled away. Prepare substrates including removing any corrosion. Reinstate steel and/or add more as deemed necessary.
4. After completion of material removal, concrete primers and rust inhibitor to the steel are applied prior to reinstating with a high build shrinkage compensated repair mortar. Formwork may be erected to close the cavity prior to installing the repair products.
5. For further long-term protection, we also recommend a membrane coating system. Install a heavy duty modified acrylic membrane in multiple layers as a moisture barrier primer system. The primer system will assist in preventing bubbling or blistering, which is highly likely if the remedial waterproofing application is not performed, which could otherwise affect the durability of the system. Our recommendation is that treatment of concrete cancer should incorporate proper weather/waterproofing membrane or it risks being a temporary solution.

The membrane system is detailed to all penetrations and junctions. The system will be supported by the manufacturer warranty for 10 years and extendable for a further 10 years with a maintenance application.

Cracks can also be repaired using a technique called crack injection where suitable epoxy or polyurethane resins are injected.

Concrete repair in progress

At Waterstop Solutions our goal is to provide innovative, flexible and practical solutions to ensure the best possible outcomes for our clients. We aim to deliver exceptional service to build and maintain long-term relationships with our customers. With more than 60 years of combined industry experience in our management team, we at Waterstop Solutions lead a workforce that is committed to providing a high standard of service. The best measure of our success is the “follow on” works from our existing clients. Our commitment to safety and our impact on the environment always takes first priority. Our approach to quality is to plan; control; monitor and grow from the outcomes. Quality assurance is a tool for us; the client and the supplier to micromanage critical elements of their project that ultimately produces an optimal result. With limited training opportunities for our field of expertise in Australia, we have invested in sending our project manager to Singapore, USA and Germany (recognized leaders in this field) to undergo extensive training. This provides us with the foundation for further development and up-skilling of our Australian workers.