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"M.C: Building materials. INVIAS: National Institute of Roads. NTC: Colombian Technical Standards. NT: Transit level. Integral: Extraction material that has not been modified by any process. Quarry: Mining, generally open pit. Mortar: It is a construction material obtained by mixing sand and water with cement. Bases: It is a thick granular material, it is between the asphalt or concrete and the sub base layer. It is composed of crushed material, sand and a small part of fine materials. Sub bases: It is a granular material, it is between the base and the subgrade or terrain. Aggregate: Construction material. Sterile: Part of the extraction material which has no use or will be used. About size: Large diameter stones approximately 12 inches."
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