Concrete quality is improved with COFFOR by the rapid and natural elimination of excess water from the concrete. Problems linked to bleeding, water rise, shrinkage, ceep, increased porosity and concrete ageing are for the most part eliminated.  
Concrete shrinkage		  
Tests made in France at the C.S.T.B. (Centre Scientifique et Technique du Bâtiment) and l'Ecole Nationale des Ponts et Chaussées as well as those made in Switzerland at l'E.P.F.L. (Ecole Polytechnique Fédérale de Lausanne) and l'Ecole des Ingénieurs de Genève indicate that the rapid elimination of excess water in COFFOR results in:

• 8-10% greater compression strength.
• 30% higher elastic modules.
• 10 times lower (2µ vs. 25µ) concrete shrinkage.
• 25% greater tensile strength.

Laboratory tests		  
Less than 1-2% of concrete escapes through the COFFOR grids during the pour. The results show that this does not affect the superior quality of concrete with COFFOR.
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