
Cenin’s cement replacement manufacturing technology is an innovative, award winning, tried, tested and patented, sustainable process. Cenin are currently manufacturing and delivering to end users two different types of cement replacement products as alternatives to industry standard replacements, Ground granulated blast furnace slag (GGBS) and Pulverised fuel ash ( PFA), from recycled industrial manufacturing by-products and other mineral wastes. They are:
Cenin are operating a manufacturing plant at Stormy down, Bridgend, Wales, UK using this low carbon technology. Production started in July 2008 and the product has been enthusiastically received by a number of major players in the construction industry. Due to anticipated future demand for the product it is envisaged that a second production facility will be constructed later this year.
We provide cement replacement products that equally balance economic and environmental benefits.
This is an award winning green technology truly reducing environmental damage by not using virgin materials, low energy inputs and local transportation, our technology leads to a truly sustainable cement process.
As part of the evaluation of materials that can be used in cement replacements, the patented technology we use, analyses each material under a fifteen point programme including at a range of different temperatures to insure no harmful emissions are produced or omitted during the process.

Telephone: +44 (0)1656 789970
Fax: +44 (0)1656 784099

By studying the crystal formation of Portland cement during hydration, our patented process software is able to reproduce these structures utilising the properties within the industrial by-products and other mineral wastes but without using a kiln.
The crystal structures of Portland cement are well understood and have been for many years, Cenin has developed the ability to build and manage these structures to the point where its cement replacements will perform equal to that of Portland cement in an identical environment.
The crystals form within the first six hours and then grow with time as the cement paste fully hydrates.
Concretes have been produced using one hundred percent Cenin replacements to achieve concrete strengths of 30Mpa at twenty eight days with a resultant carbon reduction.
Independent analysis estimates that, under current operational infrastructure and practices, the Green House Gas emissions associated with Cenin cement replacement product, cradle to gate, are equivalent to 43kg of CO2 per tonne of product. Our Cement Replacement creates 95% less CO2 emissions than standard Portland cement production at 853kg of CO2 per tonne (University of Bath 2008).
Developed from over 45 years of industrial knowledge combined with 15 years of university based research and testing in some of the UK’s leading academic institutions, the process involves:
Using Cenin’s technology greenhouse gas emissions are dramatically reduced because the cement is manufactured from industrial by-products negating the need for quarrying raw materials.

Cenin have developed a range of alternative cements from Industrial by-products that comply with all the requirements of EN196 standards. These materials were often land filled or stockpiled causing environmental damage.
Cenin is also pioneering the use of ultra low carbon energy sources such as biogas and renewable wind energy to further reduce CO2 emissions from its cement manufacturing process to practically zero.
Sites are available adjacent to our manufacturing plant at Parc Stormy, Stormydown for recycling businesses wishing to utilise the low carbon energy sources being generated nearby

Download our Cement Brochure to read more about the specific benefits of Cenin Cement Replacements