http://hdl.handle.net/20.500.12251/10 2026-05-06T00:52:02Z http://hdl.handle.net/20.500.12251/3986 Procedure for monitoring PH in porous materials Martínez Ibernón, Ana; Soto Camino, Juan; Gandía Romero, José Manuel; Gasch Molina, María Isabel; Lliso Ferrando, Josep Ramon; Valcuende Payá, Manuel Octavio The present invention relates to a method for pH monitoring in porous materials, preferably in reinforced concrete structures. A voltammetric sensor is used comprising a metal electrode whose oxidation/reduction potential has a Nernstian-type response to pH variation, or an electrode of a conductive material whose oxidation/reduction reactions do not overlap with the beginnings of the oxidation and reduction curves of the solvent and the potential at which said curves begin has a Nernstian-type response to pH variation. A potentiodynamic excitation signal is applied to the electrode which produces a response in electric current intensity that is related to the pH in the monitored material. Preferably, the applied potentiodynamic excitation signal is rectangular or triangular in shape. 2024-01-01T00:00:00Z http://hdl.handle.net/20.500.12251/3985 Prefabricated lightened cement with industrial waste of polymeric origin and fiberglass in the form of a paver Alonso Díez, Álvaro; Arroyo Sanz, Raquel; Calderón Carpintero, Verónica; Rodrigo Bravo, Alba; Gutiérrez González, Sara; González Moreno, Sara 1. Prefabricated cement lightened with industrial waste of polymeric origin and fiberglass, manufactured in the form of a paver for the production of flooring and other similar work units in building and civil engineering, with the following composition: - commercial cement; - arid; - crushed waste from recycled complete vehicle roofs, composed of a polymer matrix and fiberglass; - additives in a proportion of 0.8% with respect to the weight of the cement, and - water. 2. Prefabricated cement lightened with industrial waste of polymeric origin and fiberglass in the form of paving stone according to claim 1, characterized by an apparent density between 2150 kg/m 3 and 2180 kg/m 3 . 3. Prefabricated cement lightened with industrial waste of polymeric origin and fiberglass, in the form of a paver according to claims 1 and 2, characterized by a compression resistance between 3.8 MPa and 5.1 MPa. 4. Prefabricated cement lightened with industrial waste of polymeric origin and fiberglass, in the form of a paver according to any of claims 1 to 3, characterized by a resistance to breaking load with values between 420 N/mm and 565 N/mm. 5. Prefabricated cement lightened with industrial waste of polymeric origin and fiberglass, in the form of a paver according to any of claims 1 to 4, characterized by a resistance to wear due to abrasion between 14 and 17 mm. 6. Prefabricated cement lightened with industrial waste of polymeric origin and fiberglass, in the form of a paver according to any of claims 1 to 5, characterized by a total water absorption that is between 5.2% and 5. 9%. 7. Prefabricated cement lightened with industrial waste of polymeric origin and fiberglass, in the form of a paver according to any of claims 1 to 6, characterized by a slip resistance that is between 56 and 60 URSV. 8. Prefabricated cement lightened with industrial waste of polymeric origin and fiberglass, in the form of a paver according to any of claims 1 to 7, characterized by a Shore C surface hardness between 84 and 90. 9. Prefabricated of cement lightened with industrial waste of polymeric origin and fiberglass, in the form of a paver according to any of claims 1 to 8, characterized by having dimensions of (200x100x60) mm 3 . 2023-01-01T00:00:00Z http://hdl.handle.net/20.500.12251/3984 Device for monitoring buildings cracks and load/download tests Rodríguez Rego, Jesús Manuel; Mendoza Cerezo, Laura; Macías García, Antonio; Carrasco Amador, Juan Pablo; Díaz Paralejo, Antonio; Marcos Romero, Alfonso Carlos; Moreno Cansado, Alberto; Díaz Jiménez, Caridad; Macías Blanco, Pedro 1. Device for monitoring buildings cracks and load/download tests containing a lower base (1) suitable for the hermetic coupling of a lid (3) and allowing to understand: - a millimeter length meter (2); -Control electronics; batteries; environmental sensors; - Mobile router; Where the lower base (1) presents: - Base holes (1.1) threaded for their coupling to the wall; - Perforated base piece (1.2) with threaded holes for coupling to any surface; - Meter hole (1.3) where a millimeter length meter emerges (2) with the capacity, by means of a meter coupling (2.1) and coupling holes (2.2) threaded, to be coupled, according to the needs, to the head of interchangeable wall (4) or to the interchangeable head of the load/discharge tests (5); - Base coupling holes (1.4) that allow the hermetic closure of the lower base with the lid (3); Where the lid (3) presents: - ventilation holes (3.1); -Cover holes (3.2) threaded; -Colt (13) Orifice that allows the entrance of a USB type port; - Reset button (3.4)) that causes the 0 of the millimeter length meter (2); - Visualization screen (3.5) showing the values of the millimeter length meter (2) and the device load status; - Ignition button (3.6) that allows to activate or deactivate control electronics; - Tripod coupling hole (3.7) threaded to adjust the device to an adjustable tripod; - Photovoltaic plate (3.8) that feeds the control electronics and batteries; Where the interchangeable wall head (4) presents: -Connection holes (4.1) to make a good coupling between the lower base (1) and the interchangeable wall head (4); - Wall holes (4.2) threaded to adhere the interchangeable wall head (4) to one sides of the fissure; Where the interchangeable head of load/download tests (5) presents: - Holes of the load/discharge test head (5.1) Rossed that allow you to attach to a weight or element with a certain mass; - Load connection holes (5.2) that allow the union of the interchangeable head of the load/download tests (5) with the match piece (2.1); Where the tripod (6) presents: a tripod cylinder (6.1) threaded that enables the union between the tripod and the set formed by the lower base (1) and the cover (3), by means of the tripod coupling hole (3.7); - adjustable legs (6.2) to allow the stabilization of the device of the invention to any surface; 2. Device for monitoring buildings cracks and load/discharge tests according to claim 1 in which the meter coupling piece (2.1) is removed because interchangeable heads are connected directly by pressure to the meter of millimeter length (2). 3. Device for monitoring buildings cracks and load/download tests according to claim 1 where the router is replaced by a module or device integrated into the control electronics that allows the generation of a data transmission network. 4. Device for monitoring buildings cracks and load/download tests according to claim 1 where the lid connection hole (3) is any type of input that allows device feeding. 5. Device for monitoring building cracks and load tests according to claim 1 where the coupling (2.2) holes of the meter coupling (2.1) piece, the connection holes (4.1) of the interchangeable wall head (4) (4) and the load connection holes (5.2) of the interchangeable head of the load/discharge tests (5) are not threaded and allow the union between the different parts by means of screws and nuts. 6. Device for monitoring cracks of buildings and load/discharge tests according to claim 1 in which the interior base (1) and the Lapa (3) are made of a material resistant to adverse weather conditions. 7. Device for monitoring buildings cracks and load/discharge tests according to claim 6 in which the lower base (1) and the cover (3) are made of a rigid material. 8. Device for monitoring buildings cracks and load/discharge tests according to claim 7 in which the lower base (1) and the cover (3) are made of stainless steel. 9. Device for monitoring buildings cracks and load/discharge tests according to claim 1 in which the lower base (1) and the cover (3) are made of plastics or thermoplastic.10. Device for monitoring cracks of buildings and load/discharge tests according to claim 1 in which the interchangeable wall head (4) and the interchangeable head of the load/discharge tests (5) are made of a material resistant to adverse weather conditions. 11. Device for monitoring buildings cracks and load/discharge tests according to claim 10 in which the interchangeable wall head (4) and the interchangeable head of load/discharge tests (5) are made of a stainless steel. 12. Device for monitoring buildings cracks and load/discharge tests according to claim 1 in which the interchangeable wall head (4) and the interchangeable head of the load/discharge tests (5) are made of flexible thermoplastic. 13. Device for monitoring cracks of buildings and load/discharge tests according to claim 1 where the tripod (6) is made of a rigid material resistant to adverse conditions. 14. Device for monitoring buildings cracks and load/discharge tests according to claim 13 where the tripod (6) is made of a rigid plastic or stainless steel. 15. Device for monitoring buildings cracks and load/discharge tests according to claim 1 where the tripod cylinder (6.1) is made of an iron or stainless steel. 16. Device for monitoring buildings cracks and load/discharge tests according to 12 claim 1 where adjustable legs (62) are made of a plastic or thermoplastic. 17. Device for monitoring buildings cracks and load/discharge tests according to claim 1 where adjustable legs (6.2) are made of an iron or stainless steel and coated with a rubber or plastic. 2022-01-01T00:00:00Z http://hdl.handle.net/20.500.12251/3983 Armed land containment wall López Julián, Pedro; Pérez Benedicto, José Ángel; Salesa Bordanaba, Ángel; Sánchez Catalán, Juan Carlos; Acero Oliete, Alejandro . Armed land containment wall characterized because it understands: - A series of compact land layers, preferably Zahorra - An anchor trench (11) longitudinal - A metallic mesh (12) housed and fixed in the anchor zone (11). - A series of stones (13) arranged between the metallic mesh (12) and the slope defined by the faced face of the layers of compact land, where Each of the compact land layers (1), (4), (8), have a geotextile sheet in the land area closer to the mesh, and on the geotextile sheet for fixing, some bars of anchor perpendicularly to the plane of the wall, and anchored at its ends to the metallic mesh (12) and to the land layer. 2. Armed land containment wall according to claim 1 characterized in that the anchoring bars are corrugated bars that is subject to the metallic mesh (12) by having in this end a hook shape, while the opposite end remains nailed to the earth itself to the 90º angle. 3. Armed land containment wall according to claim 1 or 2 characterized that between the layers there is an anchor in the form of an angular metallic element in the form of "L" with its major axis parallel to the main direction of the wall and subject by medium of corrugated anchor bars. 4. Armed land containment wall according to claim 1 or 2 or 3 characterized in that the number of layers are three, a first layer (1), a second layer (4) and a third layer (8), on the first layer (1) A first sheet of geotextile material is arranged (3) fixed by a series of anchoring bars (2) fixed at one end on the metal mesh (12), and at the other end on the first layer itself (1) of Earth; In the second layer (4) arranged after the first layer (1), it also has a second sheet of geotextile material (6) fixed by a second anchoring bars (5) fixed at one end on the metallic mesh (12) and at the other end in the second layer itself (4), while in the third layer (8) a third sheet of geotextile material (10) is also set by a third anchor bars (9) fixed at one end on the metallic mesh (12) and at the other end in the third layer itself (8). 5. Armed land containment wall according to claim 4 characterized that between the second layer (4) and the third layer (8) an angular element (7) is arranged that is "l" shape and that serves to anchor the layers among themselves and is subject to anchor bars (9). 2022-01-01T00:00:00Z