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171 results on '"Castro, Carlos"'

5. Concrete mix strength estimation at 28 days based on temperature histograms and early age tests: The study case of hydraulic types of cement for sale in the equatorial Austro.

Author

Illescas-Cárdenas, Paúl, Calle-Castro, Carlos Julio, Lizarazo-Marriga, Juan, and Rivela, Betariz

Subjects
CEMENT, CONCRETE mixing, HISTOGRAMS, COMPRESSIVE strength, INFORMATION resources, EFFECT of temperature on concrete, ELECTROHYDRAULIC effect
Abstract

One of the most important characteristics of concrete is its compressive strength (f'c). It has been proven that mixtures made with identical additions, w/c ratio, and different cementitious materials provide different results, with variations of 3%, 11%, and 25% between efforts at 28, 56, and 84 days of a mixture and another. Worldwide, it is known that there are several methods and forms to calculate the f'c of a dosage; corrently, in Ecuador, it is possible to determine the efficiency whith the compression test of cores, developed in 28 days. Several countries have set up the Maturity Method in their standards as a source of information to know the resistance of a mix. This method is based on the use of temperature histograms to calculate the maturity index (temperature accumulation) and its relation with the resistance reached at a particular stage with a controlled cure, allowing improving performance or execution times, such as stripping; showing a saving according to the scale of the project. The method provides a mathematical model, which shows two constants, "A" and "B," that, together with the logarithm of maturity index, provide strength approximations of up to 7% at 28 days regarding in-press crushing tests. The mathematical model and its constants differ according to type of cementitious material; in this study, an analysis is carried out with type GU hydraulic cement. [ABSTRACT FROM AUTHOR]

Published
2023
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9. Unite! European University: Main difficulties regarding Flexible Study Pathways identified by Partners with Impact on Joint Programmes. Results of a survey across Europe

Author

Bossuyt, Sven, primary, Brogueira, Pedro, additional, Castro, Carlos, additional, David, Filipa, additional, Dellabale, Anne, additional, Freihöfer, Jana, additional, Valero García, Miguel, additional, Gonçalves, Isabel, additional, Hack, Jochen, additional, Nordström, Katrina, additional, Simões, Francisca, additional, and Simões, Patricia, additional

Published
2022
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18. Design Thinking para la superación de la brecha digital en educación.

Author

Salgado Castro, Carlos Javier, Rodríguez Baena, Luis, and Moreno Ger, Pablo

Abstract

Copyright of CISTI (Iberian Conference on Information Systems & Technologies / Conferência Ibérica de Sistemas e Tecnologias de Informação) Proceedings is the property of Conferencia Iberica de Sistemas Tecnologia de Informacao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2022

24. Legal Judgment Prediction in the Context of Energy Market using Gradient Boosting

Author

Franca, Joao V. F., primary, Boaro, Jose M. C., additional, dos Santos, Pedro T. C., additional, Henrique, Fernando, additional, Garcia, Venicius, additional, Manfredini, Caio, additional, Junior, Domingos A. D., additional, de Oliveira, Francisco Y. C., additional, Castro, Carlos E. P., additional, Braz Junior, Geraldo, additional, Silva, Aristofanes C., additional, Paiva, Anselmo C., additional, de Oliveira, Milton S. L., additional, Moreira e Moraes, Renato U., additional, Alves, Erika W. B. A. L., additional, and Sobral Neto, Jose S., additional

Published
2020
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30. Protocolo de Estudio: Análisis de la Productividad de la Industria Impresora en Villahermosa, Tabasco.

Author

López Castro, Carlos Adolfo, Castro de la Cruz, Jucelly, Morejón Sánchez, Juana María, Meneses Hernández, José Luis, García Cancino, Ismael Adrián, and León Cruz, Bety

Abstract

Copyright of Congreso Internacional de Investigacion Academia Journals is the property of PDHTech, LLC and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2021

31. Protocolo de Estudio: La Competitividad de las Grandes Empresas Proveedoras de Servicios de Mantenimiento de Tuberías en Pozos Petrolíferos en el Municipio de Centro, Tabasco.

Author

García Cancino, Ismael Adrián, López Valdivieso, M. C. Leticia, Eliseo Dantés, Hortensia, López Castro, Carlos Adolfo, and Osorio Alavez, Andrés

Abstract

Copyright of Congreso Internacional de Investigacion Academia Journals is the property of PDHTech, LLC and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2021

32. Analyzing narrative and radio language of the Serial Podcast.

Author

Gálvez Vásquez, Mariana del Carmen and Castro Castro, Carlos Ulises

Abstract

Copyright of CISTI (Iberian Conference on Information Systems & Technologies / Conferência Ibérica de Sistemas e Tecnologias de Informação) Proceedings is the property of Conferencia Iberica de Sistemas Tecnologia de Informacao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2021

45. 108 Tb/s Transmission Over 120 km of 7-Core Multicore Fiber with Integrated Cladding Pumped Multicore Amplifiers

Author

Rahman, Talha, primary, Spinnler, Bernhard, additional, Calabro, Stefano, additional, De Man, Erik, additional, Pulverer, Klaus, additional, Sommerkorn-Krombholz, Bernd, additional, Castro, Carlos, additional, Mizuno, Takayuki, additional, Miyamoto, Yutaka, additional, Takenaga, Katsuhiro, additional, Jain, Saurabh, additional, Jung, Yongmin, additional, Alam, Shaif-ul, additional, and Morioka, Toshio, additional

Published
2018
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