Company Vision and Strategy

To provide our clients with a
professional service, delivering
quality on time and to budget, and
working together with our clients to
Reduce Risk and Improve Safety

Testing and Analysis of Concrete & Construction Materials

Holliday Concrete Testing Limited was established in 1964 and is now a wholly owned subsidiary of 4-RAIL Services Limited, offering services to a wide range of clients including principal contractors, subcontractors,developers, engineers, property managers and local authorities, we are best known for our regular concrete & mortar cube collect & UKAS accredited test service (UKAS No. 0478). This service has been in operation on construction sites without interruption since the Company was founded. In addition,we also offer a wide range of tests associated with concrete & mortar, destructive and non-destructive,some of which are detailed below.

Compressive strength of concrete cubes (BS EN 12390). The cube test is the most widely used method of assessing the quality of hardened concrete.

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.  

Compressive strength of bricks (BS 3921). Testing can be carried out on both old and new bricks to ascertain the compressive strength.

Aggregate/cement ratio (cement content). Determining the cement content assists engineers in assessing the durability of concrete when compressive strength test  results are low.

Mix proportions of mortar. This methodology is used to assess compliance of hardened mortar .

On-site Services — Cube-making; concrete & mortar (BS EN 12350 & BS 4551). Monitoring of the quality of concrete and mortar during construction, utilising widely accepted methodology.

Presence of High Alumina Cement (HAC). A test vital for the process of providing guidance and additional testing for structures containing HAC concrete .

Structural surveys (intrusive and 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. A technique used to assess the alkalinity of the concrete environment surrounding reinforcing steel.

Covermeter survey (BS 1881 : Part 204). Used to locate steel reinforcement in hardened concrete. Typically used in older structures.

Rebound (Schmidt) Hammer survey (BS EN 12504). A popular technique to assess the surface hardness of an existing structure, giving an estimated in-situ cube strength.

Screed Testing (BRE Screed Test). This methodology assess the soundness of newly laidscreeds

To discuss your particular requirements regarding these or other complementary services,  contact us by emailing or call us on 020 8955 1700


Concrete Testing

Assessment of the workability of concrete.


Building Surveys

Minor intrusive surveys to assess structural elements.


Concrete Strength Testing

Sampling and compressive strength testing of concrete.