Objetivo: Determinar el comportamiento del hormigón, con aditivos a base de polímeros y/o copolímeros de policarboxilatos que optimicen las características físicas, mecánicas, según la NTE E.060. Método: El estudio es documental/bibliográfico en donde la bibliografía consultada utilizó el método deductivo, diseño de experimento, longitudinal, prospectivo y estudio de cohorte (causa-efecto). Resultados: Las características en estado físico mecánico del hormigón líquido fueron mejoradas. Con 0.6% de policarboxilato, el asentamiento perfeccionó hasta en un 92%, con un asentamiento máximo de 250 mm. El uso de policarboxilato al 0,30 % aumentó la resistencia a la compresión en un 42 % (a/c = 0,37). Con una relación a/c = 40 y 04% de policarboxilato, aumentó en 54% la resistencia a la flexión. Con una relación a/c = 0,22 y una dosificación óptima de aditivos donde s...

In this research named “Baked clay as a fine aggregate to improve the mechanical properties of structural concrete”, it was taken into consideration the relations water/concrete between 0.55 and 0.65 for a resistence to the axial compression of  f´c =210 kg/cm2. In the present investigation it was taken into account that the material is affected by the precense of high concentrations of chlorides and sulfates, because of its high porosity and permeability that make it fragile and weak not recommendable for structures with armed reinforcement. The natural fine aggregate was replaced by baked clay on different proportions (0, 15, 20 and 25%) analyzing the clay chemical properties, as well as the hardened concrete mechanical properties (flexion, tension and compression at 28 days). The outcomes of the trials indicate the viability of using ground baked clay as a fine aggregate in ...

In this research named “Baked clay as a fine aggregate to improve the mechanical properties of structural concrete”, it was taken into consideration the relations water/concrete between 0.55 and 0.65 for a resistence to the axial compression of  f´c =210 kg/cm2. In the present investigation it was taken into account that the material is affected by the precense of high concentrations of chlorides and sulfates, because of its high porosity and permeability that make it fragile and weak not recommendable for structures with armed reinforcement. The natural fine aggregate was replaced by baked clay on different proportions (0, 15, 20 and 25%) analyzing the clay chemical properties, as well as the hardened concrete mechanical properties (flexion, tension and compression at 28 days). The outcomes of the trials indicate the viability of using ground baked clay as a fine aggregate in ...

It is getting more frequent the deteriorated work rehab, the corrections of design flaws or poor constructive process. Because of this, it is required not only to rehabilitate but to rearrange the structures taking into consideration that that intervention have to fulfill the mechanic improvements. This research intents to make known the benefits that the reinforced polymer composite systems with carbon fiber give to improve the mechanical performance of structural concrete elements. The results of the resistance to the compression trials at 28 days of the unreinforced specimens was of 12 MPa, and with the incorporation of the reinforced polymer with carbon fiber (RPCF) at 100% it improves 2.67 times its resistance (32.04 MPa), while the reinforced specimens at 50%, improves 1.57 times its resistance (18.84 MPa). It can be concluded that the application of the RPCF, considerably increase...

It is getting more frequent the deteriorated work rehab, the corrections of design flaws or poor constructive process. Because of this, it is required not only to rehabilitate but to rearrange the structures taking into consideration that that intervention have to fulfill the mechanic improvements. This research intents to make known the benefits that the reinforced polymer composite systems with carbon fiber give to improve the mechanical performance of structural concrete elements. The results of the resistance to the compression trials at 28 days of the unreinforced specimens was of 12 MPa, and with the incorporation of the reinforced polymer with carbon fiber (RPCF) at 100% it improves 2.67 times its resistance (32.04 MPa), while the reinforced specimens at 50%, improves 1.57 times its resistance (18.84 MPa). It can be concluded that the application of the RPCF, considerably increase...