Ecocem is a white powder. Used in formulating concretes, it helps to produce light-coloured concretes which reduce heat absorption and incorporated CO2.
A concrete with a high albedo such as cement formulated with 70% Ecocem will significantly reduce heat absorption.
The albedo is a measurement of the reflectivity of a surface: the higher the albedo, the more the surface reflects solar energy, thus reducing heat absorption. In urban environments, a low albedo is a significant factor in the “Urban Heat Island” effect.
A concrete containing 70% Ecocem doubles its albedo relative to a concrete manufactured only using CEM I. On a concrete surface area of 130 m2 (parvis, pavements, car parks, roads, etc.), this increase in albedo equates to a reduction of an equivalent tonne of CO2 emissions per year. This also reduces the need for air conditioning and lighting equipment.
As binder represents more than 85% of the CO2 emissions of the concrete produced, working on its composition is essential.
The CO2 emissions resulting from the production of Ecocem is 20 kg/tonne
To meet the objectives of the “Grenelle”, the French environmental organisation, for a reduction in CO2 emissions of 50% by 2020, and the requirements of target 2 – integrated selection of construction processes and products – of the HQE process, it is sufficient to design concretes which include binders formulated with Ecocem.
The more Ecocem in the binder, the less CO2 is incorporated in the concrete.
The “Incorporated CO2” of any structure is defined as the volume of CO2 emitted during the production of the materials required, their supply and the building process.
Up to now, most of our efforts have related to the operational CO2 of our structures, i.e. the volume of CO2 emitted while they are operating. We are now managing to control these emissions better by using, among other things, double glazing, solar panels, greater thermal masses, etc.
All these technologies reduce operational CO2 but add considerably to the incorporated CO2.
The impact of incorporated CO2 is important for several reasons:
The development cannot be considered as sustainable if it does not take into account both incorporated CO2 and operational CO2.
LEED is an international evaluation system that gives an environmental rating to construction projects. It is often used as a repository in major projects of international scope. LEED is administered by the US Green Building Council.
The use of Ecocem as a substitute for Portland cement can contribute to up to 14 points and thus achieves a higher level of certification.
The level of certification according to the total number of points is as follows:
-Certified: 40 to 49 points
-Silver Certified: 50 to 59 points
-Gold Certified: 60 to 79 points
-Platinum Certified: > 80 points
ECOCEM France SAS - Horizon Sainte Victoire - Bâtiment A – Parc de la Duranne - 970, rue René Descartes - 13100 AIX EN PROVENCE
Tél. 04 42 90 76 30 - Fax. 04 42 90 76 39
Société par Actions Simplifiée au capital de 9 000 000 €
SIREN. 500 943 733 R.C.S Aix en Provence - TVA. FR 26 500 943 733