United Scanning Services Pty Ltd

United Scanning Services

Structural Assessment of Concrete - Perth

Phone: 08 9294 1832 | Mobile: 0433 724 921


Level 8, 251 Adelaide Tce, Perth WA

United Scanning

Experienced Structural Assessors of Concrete servicing Perth and surrounds

Crush Testing – Compressive Strength Testing

The United Scanning team know a lot about concrete. Over the years we have worked on bridges, multi-story car parks, heritage building footings, concrete pressurised gas domes and hospitals to give just a few examples. We were responsible for one of the most detailed concrete scanning jobs in the world according to the Geophysical Archaeometry Laboratory in the US.

One common question our customers ask us about concrete, and particularly, the concrete in their building or structure is, “How strong is it?” Sometimes they have an older structure and wish to know the effect time and decay has had upon the strength of the structure. Sometimes they wish to repurpose or alter the use of an existing concrete slab or footing and want to be confident the concrete can carry the new load. Customers with new buildings and structures often require confirmation that the concrete conforms to the strength requirements they originally established with their building contractor.

A crush test (more accurately a compressive strength test) is the way United Scanning usually answers this question. The compressive strength of a material, in this case concrete, is the ability of the material withstand or carry loads that would tend to compress it.

Types of tests

Figure 1: Different types of load

United Scanning acquire a core sample of the concrete from the customer site and send this to our NATA (National Association of Testing Authorities) accredited laboratory to be tested according to the Australian standard (AS 1012.9:2014 - Methods of testing concrete - Compressive strength tests - Concrete, mortar and grout specimens).

To acquire a sample to crush test, United Scanning work with the customer to select an area or areas of concrete that best represent the condition of the concrete as a whole or the condition of the concrete that needs testing. Having decided the general areas that will provide the concrete samples, United Scanning then scan the area using Ground Penetrating Radar to locate the steel reinforcing in that area. This way, the core sample can be taken in such a way as to miss the reinforcing and have least effect on the overall strength of the concrete structure.

Taking a sample for compression testing

Figure 2: Core drilling to acquire sample with a 75mm barrel.

Taking a sample for compression testing - 40mm barrel

Figure 2.1: Core drilling to acquire sample with a 40mm barrel.

Usually, core samples are taken using an 80mm to 100mm barrel, with greater diameter samples providing more reliable crush test results. However, because customer rarely want a large hole in their concrete, a compromise is struck between our wish for a larger more reliable sample and the clients wish for a smaller hole.

Once the sample is at the lab for testing, the lab will square the ends of the sample if they are not already square and then perform the test, using a specialized machine that applies and measure compressive stress or load.

Crush test diagram

Figure 3: Crush Test diagram

The test involves placing a steadily increasing load down the length of the core sample (1.) until the sample fractures and breaks (2.). The load at which the concrete collapses indicates its compressive strength, and from this can be calculated an array of useful information.

Concrete being compressed

Figure 4: Crush Test sample being compressed

Our NATA accredited laboratory will then provide a report of the outcome of the crush test which United Scanning forward on the customer, along with our detailed description of the work performed for the customer to achieve their aim.

NATA - compressive strength test report

Figure 5: Example of Compressive Strength Test report

Accreditations and Approvals

  • Telstra Communications
  • ATCO Gas
  • White Card
  • Working at Heights
  • WA Gas - WestNet Energy
  • Western Power
  • Water Corporation
  • Current Driver’s License
  • Senior First Aid
  • Confined Spaces
  • PTA Rail Access
  • Ground Penetrating Radar Theory and Application

Our Services

  • Concrete Scanning using GPR
  • Service Location
  • Structural Assessment of Concrete
  • Reporting


"Thanks again for your quick response to this enquiry! Your technician was superb too - very friendly and professional."

Chief Strategy Officer | Sadleirs Perth

"Lee was really helpful on site with the Dampier job, could not have asked him to do a better job... we were really impressed with the work he did up there."

Hannah Wood | HSE Consultant | Prensa Pty Ltd

"... appreciate the quick turnaround and your time and guidance on site."

RAAF Learmouth

"I was pretty happy with the way Jamin and Gary worked; please pass on my thanks."

Envar Group

"Main Roads WA engaged United Scanning to undertake service locating works as part of the Northam Pithara Rd realignment project. Although the scope of works altered a few times due to external circumstances, United Scanning personnel completed all required objectives. United Scanning was also prompt and efficient through correspondences with MRWA personnel."

Main Roads WA

"Just a quick note to say thank you for an excellent service! Matthew did a great job and found the cables we were looking for. He was very helpful and did everything he could to assist."

Brightwater Care Group

"Broad thanks United Scanning Services for the efforts and involvement in the delivery of this challenging project and given the opportunity would happily engage again with United Scanning Services in the future."

Perth Domestic Airport

"It's a great outcome that Jamin was able to detect the cable and he was early, polite and capable."

"We were really happy with the service from Jamin in the field."

Aurora Environmental

Morning Matthew, a brief note to the team, all went well this morning which is great. Great service end to end when we required professional services urgently.

Own Valli - Middleton Homes

Examples of our reports

Non-Destructive Testing Report

Non-Destructive Testing Report

Download Sample

(PDF 1.3MB)

NDT Report on concrete walls

NDT Report on Concrete Walls

Download Sample

(PDF 3.45MB)

Structural Assessment Report

Structural Assessment Report

Download Sample

(PDF 882KB)

Site Location Scanning Report

Detailed concrete scanning report

Download Sample

(PDF 8.3MB)

GPR Concrete Scanning Capabilities

GPR Concrete Scanning Capabilities

Download Sample

(PDF 1.6MB)

Concrete Scanning Report

Concrete Scanning Report

Download Sample

(PDF 7 MB)

United Scanning - Specialists in Structural Assessment of Concrete, Perth, Western Australia

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