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Fresh thinking for construction

Who we are

Concrefy is an international engineering firm specialising in concrete technology. For more than 40 years, we have been working with passion on solutions that go beyond our clients’ expectations.

With a fresh view and innovative technologies, we aim to raise the concrete industry to a new standard.

  • Materials research, product development and process improvement are part of our daily routine, as are damage analyses and inspections.

    Our concepts combine concrete technology, modern (measurement) techniques and data analysis in pragmatic Decision Support Tools and create added value for our clients.

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Concrefy aims to be the specialist for concrete technology and concrete monitoring, both in the concrete factory and at the building site.


With the aid of sustainable solutions, we create added value for concrete construction during the preparation, execution and the service life of buildings and structures.


Concrefy has a rich history dating back to 1978, when Ing. J.J. Stapels founded the concrete consultancy firm “Betontechnisch Adviesbureau Stapels” (BAS) in Oostrum, The Netherlands. It was not until the company’s acquisition by Ir. A.J.E.J. van Casteren in 1994 that the consultancy firm initiated its considerable modern development. In 1999 this was signified by its transformation into the “Instituut voor Betontechnologie, Advies en Schade-expertise” (BAS) and the establishment of a modern accredited laboratory in Venray, The Netherlands. The next step in the evolution of the company occurred in 2007, when the largest and most modern concrete laboratory of the Netherlands “B|A|S Research & Technology” was moved to Venlo.
Since its foundation B|A|S has rapidly developed into a renowned international concrete engineering firm. The company develops unique value engineering concepts combining concrete technology and digital techniques. As of July 2016 the company has become a part of the Doka family, focussing on further international growth.

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Concrefy B.V.