Concrete Testing & Analysis
We're proud to offer our clients a comprehensive range of services through Holliday Concrete Testing Ltd, established in 1964 and now a wholly owned subsidiary of 4RS.
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.
They offer a wide range of on- and off-site concrete and mortar tests, both destructive and non-destructive, some of which are detailed here.
- Covermeter Surveys (BS 1881: Part 204)
Typically used in older structures to locate steel reinforcement in hardened concrete.
- 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.
- 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.
- Depth of Carbonation, Chlorine & Sulphate Content
Techniques used to assess the alkalinity of the concrete environment surrounding reinforced steel to assess risk of corrosion and degradation.
- Compressive Strength of Concrete Cubes (BS EN 12390)
The cube test is the most widely used method of assessing the quality of hardened concrete.
- Compressive Strength of Bricks (BS 3921)
Testing can be carried out on both new and old bricks to ascertain compressive strength.
- Cube-Making: Concrete & Mortar (BS EN 12350 & BS 4551)
On-site monitoring of the quality of concrete and mortar during construction utilising widely accepted methodology.
- Aggregate/Cement Ratio (Cement Content) (BS 1881: Part 124)
Determining the cement content assists engineers in assessing the durability of concrete when compressive strength results are low.
- Mix Proportions of Mortar
This methodology is used to assess compliance of hardened mortar.
- Compression Test on Concrete Cores (BS 1881: Part 120 or 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)
A popular technique to assess the surface hardness of an existing structure, giving an estimated in-situ cube strength.