Business Products Services Quality Contact Concrete Adapting to Instruction EHE-08, we develop a range of concretes and mortars that seek to adapt our products to the needs of our customers. The concretes will be typified according to the following format: T - R / C / TM / A HF HR HL HAC HNE where: T Indicative that will be HM in the case of mass concrete, HA in the case of reinforced concrete and HP in the case of prestressing. R Specified characteristic resistance, in N / mm². C Initial letter of consistency type. TM Maximum aggregate size in millimeters. A Designation of the environment. Regarding the specified characteristic resistance, it is recommended to use the following series: 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80, 90, 100 In which the figures indicate the specified characteristic concrete compressive strength at 28 days, expressed in N / mm². The resistance of 20 N / mm² is limited in its use to mass concrete. The prescribed concrete must be such that, in addition to mechanical resistance, it ensures compliance with the durability requirements (minimum cement content and maximum water / cement ratio) corresponding to the environment of the structural element. © 2009 Gerardo Martín, SL | Design and layout: Ramiro Sánchez

Business Products Services Quality Contact Aggregates We commercialize all types of aggregates, mainly those used for the manufacture of concrete and mortar since we have stockpiles in the plant for sand (aggregate size 0/4 mm) and coarse aggregate (aggregate size 4/22 mm). These materials are placed in the works of our clients since we have the necessary equipment to supply the different works. And as our goal is to supply quality products, all have CE marking and comply with the UNE standards applicable to the different aggregates. In addition, as a standard, we have reports on the results of the tests of the aggregates used in the manufacture of concrete. Annually, the determination of the friability of the sand, the determination of the water absorption by the sands and a petrographic study are made. The shape coefficient, slab index, wear resistance, absorption determination and a petrographic study of the gravel are also determined annually. Every six months it makes a determination of clay lumps, of soft particles, of the material retained by the 0.063 sieve, of total sulfur compounds, of soluble sulfates, of chlorides and granulometric analysis. Monthly a determination of organic matter is made, determination of fines in aggregates that pass through the 0.063 mm sieve, © 2009 Gerardo Martín, SL | Design and layout: Ramiro Sánchez