What is it we do?



With a distinguished heritage of working on projects for principal and sub-contractors, developers, engineers, property managers and local authorities, Holliday Concrete Testing gives all our Clients access to peerless expertise and experience in this specialised field.
We offer a wide range of on- and off-site concrete and mortar tests, both destructive and non-destructive, some of which are detailed here.

  •  Compressive Strength of Concrete Cubes (BS EN 12390)*

The cube test is the most widely used method of assessing the quality of hardened concrete.


  • Cube-Making: Concrete & Mortar (BS EN 12350 / BS EN 12390 / BS 4551)*

On-site monitoring of the quality of concrete and mortar during construction.


  • Slump Test and Flow Table Test (BS EN 12350)*
On-site test used to measure the consistency & workability of fresh concrete before it sets.


  • Compression Test on Concrete Cores (BS EN 12504-1)*

This methodology is used to assess actual in-situ strength of concrete in cases of non-compliance or in old structures.


  • Rebound (Schmidt) Hammer Surveys (BS EN 12504-2)*

A popular technique to assess the surface hardness of concrete in an existing structure.


  • Building Surveys (Intrusive & Non-Intrusive)

Surveys are undertaken in older structures to assess potential defects to enable the client to plan possible repairs and assess the future working life of a structure.


  • Covermeter Surveys

Typically used in older structures to locate steel reinforcement in hardened concrete.


  • Depth of Carbonation, Chlorine & Sulphate Content

Techniques used to assess the risk of corrosion and degradation of steel reinforcement.


  • Presence of High Alumina Cement (HAC) (BRE IS15/74)

A test vital for the process of providing guidance and additional testing for structures containing HAC concrete.


  • Aggregate/Cement Ratio (Cement Content) (BS 1881: Part 124)

Determining the cement content to assess compliance and durability of concrete.


  • Mix Proportions of Mortar (BS4551)

This methodology is used to assess compliance of hardened mortar.


  • Compressive Strength of Bricks (BS 3921)

Testing can be carried out on both new and old bricks to ascertain compressive strength.


  • On-Site Concrete Cube Make Demonstration

HCT recognise that concrete test cube failures are often the result of a poor cube-make technique, or inadequate equipment or tools being used. As such, in addition to the supply of test equipment, we have developed an on-site 'Cube Training demonstration'. This 1 hour course is conducted by our experienced Concrete Field Technicians and is ideal for Site Engineers, Operatives and Managers alike to learn how to correctly sample and make a concrete test cube to British Standards. Contact us today to discuss particulars of your requirements.

 

*UKAS accreditation is limited to the tests included in our UKAS Schedule of Accreditation – External link opens in new tab or windowClick here for a copy