Veritas Structures

Concrete Durability Assessment

How long the structure will last, what is driving deterioration, and what protection extends its service life.

A durability assessment looks forward rather than back. Instead of only recording current condition, it models how deterioration will progress and estimates remaining service life under the structure exposure. This turns durability from a vague concern into a planning input: when intervention will be needed, and what protection strategy is most cost-effective.

Veritas Structures durability assessments combine exposure classification, chloride and carbonation data, cover surveys, and corrosion-condition surveys to model the dominant deterioration mechanism. For chloride-driven structures we assess chloride ingress against the cover and threshold; for carbonation-driven structures we assess carbonation depth against cover. The result is an evidence-based view of time to corrosion initiation and the rate of progression.

The assessment then evaluates protection and intervention options against service-life targets: coatings and sealers, corrosion inhibitors, cathodic protection, cover repair, or replacement, with indicative costs and the service-life extension each delivers. This supports a rational whole-of-life decision rather than reactive patching.

Durability assessments are engineer-endorsed and anchored to the Veritas Ledger, and they pair naturally with condition assessments and materials testing. Re-assessment over time validates and refines the model against measured progression, sharpening future capital planning. Applicable to concrete structures in marine, industrial, infrastructure, and liquid-retaining environments Australia-wide.

Deliverables

What's Included

Exposure classification per AS 3600
Chloride ingress assessment against cover and threshold
Carbonation progression assessment
Cover survey and statistical analysis
Corrosion-condition survey integration
Service-life and time-to-initiation modelling
Protection and intervention option appraisal
Whole-of-life cost comparison
Service-life extension estimates per option
Engineer-endorsed durability report

Methodology

Our Process

1

Exposure and Data Review

The structure exposure is classified per AS 3600, and existing chloride, carbonation, cover, and corrosion data are reviewed. Gaps are identified for targeted testing.

2

Targeted Durability Testing

Where required, chloride profiling, carbonation testing, and cover surveys are conducted to provide the inputs for service-life modelling at representative locations.

3

Service-Life Modelling

The dominant mechanism is modelled to estimate time to corrosion initiation and the rate of progression, using measured inputs rather than default assumptions.

4

Protection Appraisal

Protection and intervention options are appraised against service-life targets, with indicative costs and the life extension each provides, enabling a whole-of-life comparison.

5

Reporting and Anchoring

An engineer-endorsed durability report sets out the model, the options, and the recommended strategy. It is anchored to the Veritas Ledger, and re-assessments refine the model against measured progression.

Technical Data

Technical Specifications

Exposure classificationPer AS 3600 (A1 to C2, U)
Key inputsChloride profile, carbonation, cover, corrosion survey
OutputTime-to-initiation, progression rate, service-life view
Protection optionsCoatings, inhibitors, cathodic protection, cover repair
DeliverableDurability report, anchored to Veritas Ledger
CoverageAll Australian states and territories

Compliance

Australian Standards

AS 3600:2018

Concrete Structures

Defines exposure classifications, cover requirements, and durability provisions central to the assessment.

AS 3735:2001

Concrete Structures Retaining Liquids

Applies to durability assessment of tanks, basements, and liquid-retaining structures with critical exposure.

EN 1504

Concrete Protection and Repair

Frames the protection and repair principles appraised against service-life targets.

HB 84

Guide to Concrete Repair and Protection

Practical guidance on selecting protection strategies suited to the deterioration mechanism.

FAQ

Frequently Asked Questions

What is service-life modelling?

Service-life modelling estimates how long a structure can perform before deterioration (typically reinforcement corrosion) requires intervention. For chloride-driven deterioration it models how long chlorides take to reach the reinforcement at the measured cover and ingress rate, then how long corrosion takes to cause damage. The output is a time-based view that lets you plan protection or repair before damage occurs, rather than after.

How accurate are durability predictions?

Predictions are estimates based on measured inputs and established models, so they carry uncertainty, but they are far more reliable than generic assumptions because they use the structure own chloride, carbonation, and cover data. Accuracy improves with re-assessment: comparing modelled progression against measured progression over time calibrates the model for that specific structure, which is one reason anchoring the data to the Veritas Ledger is valuable.

What protection options can extend service life?

Depending on the mechanism and stage, options include surface coatings and sealers to slow ingress, corrosion inhibitors, cathodic protection (impressed current or sacrificial) to halt active corrosion, cover repair or replacement of contaminated concrete, and in severe cases element replacement. The assessment compares these against service-life targets and cost so the chosen strategy is justified on a whole-of-life basis rather than lowest upfront cost.

When is a durability assessment worth doing?

It is worth doing for structures in aggressive exposure (marine, industrial, de-icing, liquid-retaining), for assets where unplanned structural failure or downtime is costly, and ahead of major capital decisions where you need to know whether to protect, repair, or replace. It is also valuable for newer structures where early durability planning can dramatically extend service life at low cost compared with reactive repair later.

Coverage

Available Across Australia

We deliver durability services in all major Australian cities. Select a location for city-specific information.

Sectors

Industries We Serve

Our durability services are tailored to the specific requirements of each sector.

Get started with durability

Contact our team for a scope discussion and quote. We respond within one business day.