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Then add water, to trigger a chemical reaction with the cement. I asked Juan Esteban Calle Restrepo, the CEO of Cementos Argos , the leading cement producer in Colombia, about that when I sat down with him recently at his office in Medellín. A popular analogy in the industry is that cement is the egg in the concrete cake. He was frank.
Cartagena, Colombia On the northern coast of Colombia, Cartagena offers a more urban option in the sun. According to Dollar Flight Club , a membership service offering cheap airfares, San Juan is one of the best deals in the region, with round-trip flights starting at $138 from Atlanta. San Juan, P.R.
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