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CP40 is a hydraulic binder produced from the mixture of a material known as Pozzolana and finely ground Calcium Hydrate. This binder is of low mechanical strength and its setting speed is a little bit slower than Portland Cement. Because of this, it can be considered as a cement for masonry applications.

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Fernando Martirena
Cuban
Civil Engineer, PhD. Professor.
Spanish, English, German.
Research and investigation of materials, specifically alternative cement and cement products.

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Brickmakers mixing the clay in the traditional way
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