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Non-Destructive Testing of Concrete for Better Asset Performance

October 05, 2026

The need for reliable asset intelligence is becoming increasingly important as New Zealand's construction sector continues to play a significant role in the economy. According to Stats NZ, the construction industry accounted for 7.8% of New Zealand's GDP in 2024.

Concrete plays a critical role in New Zealand's construction and infrastructure sectors, but maintaining asset performance, reliability, and longevity requires more than what can be seen on the surface. Hidden defects, aging assets, underground services and unknown structural conditions can all impact safety, project outcomes and long-term asset value.

Non-destructive testing (NDT) of concrete provides a services to help asset owners, engineers and contractors assess concrete condition, identify hidden defects, locate embedded structures and gain the asset intelligence needed to make informed maintenance and engineering decisions without damaging the asset.

Addressing Hidden Risks Across Concrete and Construction

Across New Zealand, many infrastructure assets are approaching or exceeding their original design life, increasing the need for reliable condition assessment and proactive maintenance strategies. Infrastructure owners, asset managers and construction teams are under increasing pressure to extend asset life, improve reliability and minimize costly disruptions while maximizing the value of existing assets.

Many of the risks that affect asset performance, however, remain hidden below the surface. Concrete deterioration, embedded structural issues and unknown underground services can increase safety risks, create project delays and contribute to unexpected maintenance costs.

Access to accurate asset intelligence is critical for identifying hidden risks, prioritizing maintenance investments and making informed asset management decisions that improve long-term asset performance and reliability.

Maximizing Concrete Performance and Reliability

Concrete structures are designed to perform for decades, yet deterioration often begins long before visible signs appear. This is particularly important in New Zealand, where much of the country's infrastructure is in coastal environments and exposed to conditions that can accelerate deterioration. Reinforcement corrosion caused by chloride ingress is recognized as one of the most significant durability challenges affecting reinforced concrete structures in New Zealand. Cracking, voids, delamination, moisture ingress and material inconsistencies can compromise performance, reliability and service life if not identified early.

Through Concrete Condition Assessment, we help clients identify deterioration earlier, prioritize maintenance investments and make informed decisions about repair, rehabilitation and long-term asset management.

Our Defect & Moisture Investigation capabilities help uncover hidden voids, cracking, delamination, deterioration and moisture-related anomalies, allowing issues to be identified earlier, risks to be reduced and the long-term performance of critical assets to be protected.

Reducing Construction Risk Beyond Concrete

Improving concrete performance is only part of the equation. Successful construction and infrastructure projects also depend on understanding the hidden risks associated with underground services, embedded structural components, and foundation integrity.

The need for reliable asset intelligence is becoming increasingly important as New Zealand's infrastructure asset base continues to age. According to Te Waihanga, New Zealand faces an infrastructure deficit of approximately $104 billion, while nearly 60% of infrastructure investment is required to renew and maintain existing assets rather than build new infrastructure. As organizations seek to maximize asset life and optimize maintenance investments, understanding asset condition before issues escalate has never been more important.

Before excavation or construction begins, Utility & Service Mapping helps identify buried services, conduits and subsurface infrastructure, reducing the risk of utility strikes, project delays and safety incidents while improving planning certainty.

When refurbishment, drilling, cutting or structural modifications are required, Reinforcement & Embedded Object Detection provides visibility into reinforcing steel, post-tensioning systems and embedded components, helping teams undertake works with greater confidence while avoiding costly damage to critical structural elements.

For foundations and structural assets, Thickness, Internal Features & Pile Assessment delivers valuable insights into structural condition and integrity, supporting engineering evaluations, reducing uncertainty and enabling more informed decision-making throughout the asset lifecycle.

Building Confidence Through Better Asset Intelligence

Whether maintaining existing assets or delivering new construction projects, gaining clear visibility into asset conditions is essential for reducing risk and making confident decisions. Our non-destructive testing (NDT), concrete inspection and structural investigation services help clients identify hidden defects, reduce risk, optimize maintenance planning, and improve long-term asset performance.

By providing greater visibility into asset conditions, we help organizations reduce uncertainty, prioritize investments and make decisions with confidence. SGS will be attending the Concrete NZ Conference, taking place 21-23 October 2026 at Tākina, Wellington. Visit us at Booth #32 to discover how greater asset visibility can help improve concrete performance, reduce construction risk and support more informed decision-making across the asset lifecycle.

We look forward to meeting you there.

About SGS

SGS is the world’s leading Testing, Inspection and Certification company. We operate a network of over 2,500 laboratories and business facilities across 115 countries, supported by a team of over 100,000 dedicated professionals. With more than 145 years of service excellence, we combine the precision and accuracy that define Swiss companies to help organizations achieve the highest standards of quality, compliance and sustainability.

Our brand promise – when you need to be sure – underscores our commitment to trust, integrity and reliability, enabling businesses to thrive with confidence. We proudly deliver our expert services through the SGS name and a portfolio of trusted specialized brands, including Applied Technical Services, Brightsight, Bluesign and Nutrasource.

SGS is publicly traded on the SIX Swiss Exchange under the ticker symbol SGSN (ISIN CH1256740924, Reuters SGSN.S, Bloomberg SGSN SW).

For further information, please contact:

SGS New Zealand

Jack

Doolan

Business Development Manager

News & Insights

  • SGS New Zealand Limited

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660 Great South Road, Ellerslie,

Auckland, New Zealand