Overview
For concrete scanning in Didcot, NDTScan offers something most scanning contractors do not: a named specialist who does the site work and the interpretation. Neil Smuts leads every Oxfordshire survey from NDTScan's Oxford base, and the report you receive is his reading of the data, not a set of marks left on a slab.
In Didcot the local context is clear enough: the former power station site, Milton Park and Harwell Campus, and the Great Western Park and Valley Park housing expansions. That mix of ages and construction types is why Didcot work has to start with a survey that is planned for the element in question, not a generic pass with one antenna.
Most scanning companies stop at marks on the surface. NDTScan does not. Every Didcot survey goes through careful office post-processing, where reflections are analysed, ambiguities resolved and the interpretation checked against the drawings and the element's history. The result is a record the client can design from, defend in a dispute and hand to an auditor.
NDTScan will always say this to a Didcot client considering repairs: scan first. A repair specified without a proper survey and an expert interpretation is a repair to a guess. The survey establishes what is really there, so the engineer can design for the structure that exists rather than the one on the drawings.
Scan before you repair. That is the standing advice for every Didcot client, and the reason NDTScan reports what the concrete contains before anyone specifies what to do about it.
Services Available in Didcot
- GPR Concrete Scanning Pre-drill and pre-coring surveys, rebar and mesh mapping, post-tensioned tendon detection, void and honeycombing detection, slab thickness and cover estimation and RAAC identification. Method and antenna selected for the Didcot element in question, with the full interpreted record supplied.
- Ultrasonic Testing of Concrete Ultrasonic pulse velocity testing for uniformity and quality assessment, pulse echo for thickness and delamination where only one face is accessible, and the combined SONREB method for compressive strength estimation. Used across Oxfordshire where GPR alone cannot answer the question.
- Concrete Compressive Strength Assessment Rebound hammer surveys, UPV combined method and managed core extraction with laboratory testing to BS EN 13791. Independent reporting suitable for engineering acceptance, building control and dispute work on Didcot structures.
Typical Didcot Projects
Around Didcot the instructions NDTScan receives are shaped by education buildings, including RAAC identification and pre-drill scans in occupied blocks, railway structures and station buildings and post-war housing where non-standard construction has to be identified before any works. Alongside those sit the constants of every Oxfordshire town: pre-drill and pre-coring scans on occupied buildings, post-tensioned slab investigation before any fixing or penetration, RAAC identification in schools and public buildings, and structural investigation before repair.
NDTScan also covers Milton, Harwell and East Hagbourne and the rest of South Oxfordshire. Every one of these areas is reached from the Oxford base without a subcontractor in the chain.
About NDTScan
NDTScan is a specialist non-destructive testing company based in Oxford and led by Neil Smuts. Its core disciplines are GPR concrete scanning, ultrasonic testing and in-situ compressive strength assessment, brought together in its concrete scanning and structural condition survey service. NDTScan is a Level 4 UKCSS Operator, the first in the UK to achieve that certification. Didcot and the whole of Oxfordshire are within the company's everyday working area, and all work is reported to a standard suitable for engineering acceptance. RAAC identification is covered on the RAAC surveys page, and steel on the ultrasonic thickness and corrosion mapping page.
Didcot NDT Services
- GPR Pre-Drill Scanning Pre-drill and pre-coring surveys, PT slab mapping, rebar location and void detection across Didcot housing, commercial and public buildings.
- Post-Tensioned Slab Investigation Tendon detection and full slab documentation for Oxfordshire commercial, education and healthcare structures before any fixing, cutting or coring.
- RAAC Identification GPR based RAAC plank identification for schools, halls, housing and public buildings across South Oxfordshire, reported in line with IStructE guidance.
- Ultrasonic Pulse Velocity Testing UPV surveys using the Proceq Pundit PL-200 to BS EN 12504. Uniformity, delamination and strength estimation for Didcot structures.
- Compressive Strength Assessment Rebound hammer, SONREB and managed core extraction to BS EN 13791, reported for engineering acceptance and building control in Didcot.
- Short-Notice Didcot Coverage Oxford-based team covering Didcot and the rest of South Oxfordshire. Immediate mobilisation available, with every survey interpreted and reported in full.
Our Services
- Concrete & Structural Integrity
- Drone-Based Aerial Surveying
- Vehicle-Mounted Inspection
- Handheld & Portable Inspection
- Underwater Surveying & Inspection
- Digital Twin & 3D Modelling
- Advanced Data Analytics & Reporting
Sectors We Support
- Aerospace & Aviation
- Education & Public Sector
- Archaeology & Heritage
- Smart Cities & Urban Planning
- Waste & Recycling
- Defence & Security
- Emergency Response
- Construction & Real Estate
- Mining & Minerals
- Agriculture & Environment
- Maritime & Underwater
- Rail & Transportation
- Oil & Gas
- Civil Engineering
- Utilities & Energy
Equipment & Technologies
- IML
- GSSI
- Sylva
- Leica
- Voyis
- Testo
- Hilti
- Cygnus
- Proceq
- MALA GPR
- SlipAlert
- Flyability
- Protimeter
- Matterport
- Saab Seaeye
- Deep Trekker
- IDS GeoRadar
- FLIR Systems
- Sonatest Ltd
- Wagner Meters
- Mistras Group
- Munro Stanley
- Blue Robotics
- DJI Enterprise
- Teledyne Marine
- Quantum Systems
- Argus Electronic
- Fakopp Enterprise
- Eddyfi Technologies
- Olympus Corporation
- FARO
- NavVis
- Trimble
Why Choose NDTScan
Didcot Concrete Scanning FAQs
Frequently Asked Questions.
The questions Didcot clients ask most often about concrete scanning, RAAC identification and structural investigation, answered by the specialist who does the work.
Do you provide concrete scanning in Didcot?
Yes. Didcot is in Oxfordshire, which NDTScan covers from its Oxford base along with Buckinghamshire, Berkshire and Oxfordshire. Neil Smuts carries out and interprets the survey personally, so the person on site in Didcot is the person who writes the report.
What can a GPR concrete scan in Didcot actually find?
Ground penetrating radar indicates the position and estimated depth of reinforcing bars and mesh, post-tensioned tendons, conduits and services, voids and honeycombing, and estimates slab thickness and cover. In Didcot that most often means establishing what a slab or wall contains before drilling or coring, locating reinforcement before an alteration, or characterising a structure before repair. Where GPR cannot resolve a question, NDTScan adds Ferroscan or ultrasonic methods.
Do you carry out RAAC surveys in Didcot and the rest of South Oxfordshire?
Yes, regularly. RAAC identification surveys are a standing part of NDTScan's Oxfordshire work, in schools, halls, housing and healthcare buildings. GPR is used to separate RAAC planks from conventional reinforced concrete, and the findings are reported in line with IStructE guidance so the building owner can act on them.
Is a scan really necessary before concrete repairs in Didcot?
Yes. A repair specified without a proper scan and an expert interpretation is a repair to a guess, and it risks repeating the fault that caused the damage. The survey establishes what the Didcot element actually contains and how it is behaving, so the engineer designs for the structure that exists. The scan is the cheapest part of getting the repair right.
What equipment does NDTScan use on Didcot concrete scanning projects?
GSSI SIR 4000 and Mala ground penetrating radar systems for the scanning itself, the Hilti PS Ferroscan for high resolution rebar mapping in tight spaces, and the Proceq Pundit PL-200 for ultrasonic pulse velocity and pulse echo work. The choice for a Didcot element is made by the method the element needs, and the interpretation of the data matters more than any single instrument.
Concrete scanning guides
The questions behind most enquiries
How to identify RAAC
What RAAC looks like, where it was used, and what a visual check cannot tell you.
Read the guideScanning before drilling or coring
What happens on the day, what the marks mean, and what the contractor receives.
Read the guidePost-tension detection
How tendons are investigated in a post-tensioned slab, and when the engineer decides.
Read the guideRebar scanning
Bar position, spacing and estimated cover, and what a scan cannot tell you.
Read the guideFerroscan surveys
What the Hilti system does well, and where radar takes over.
Read the guideConcrete x-ray
Why radiography is rarely practical on site, and what replaces it.
Read the guideWhat clients and partners say
In their words
I have worked with Neil on a number of projects and have found him to be extremely knowledgeable in the fields of concrete scanning and structural repair. His approach to the task is very structured and professional, and communication throughout the project is always open and honest. I will be working with Neil again in the future, and I would happily recommend him.
I had the pleasure of working with Neil on a complex project involving structural remediation, where his expertise was key to our success. Neil was professional, knowledgeable, and solution-focused throughout. He worked seamlessly with the client team and brought the right attitude to every challenge.
Neil is an expert in his field, with a high level understanding of concrete scanning techniques, concrete repairs, and the technology that suits. He shows a keen interest in innovation and is open to learning new methodologies. I would highly recommend Neil to those seeking his services.

