Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Covadonga Palencia"'
Autor:
Jesús de-Prado-Gil, Rebeca Martínez-García, P. Jagadesh, Andrés Juan-Valdés, María-Inmaculada Gónzalez-Alonso, Covadonga Palencia
Publikováno v:
Ain Shams Engineering Journal, Vol 15, Iss 2, Pp 102548- (2024)
Nowadays, special concrete-like self-compacting concrete (SCC) requires sustainability by introducing recycled aggregates as a partial replacement for natural aggregate. Technological development initiatives in the construction sector estimate the 28
Externí odkaz:
https://doaj.org/article/3c9844c63e4f4ea589b9d506d3336eed
Publikováno v:
Case Studies in Construction Materials, Vol 16, Iss , Pp e01046- (2022)
This study aims to apply machine learning methods to predict the compression strength of self-compacting recycled aggregate concrete. To obtain this goal, the ensemble methods: Random Forest (RF), K-Nearest Neighbor (KNN), Extremely Randomized Trees
Externí odkaz:
https://doaj.org/article/261176fb88f84e83a82af0dc3b92eb55
Publikováno v:
Materials, Vol 15, Iss 15, p 5232 (2022)
A considerable amount of discarded building materials are produced each year worldwide, resulting in ecosystem degradation. Self-compacting concrete (SCC) has 60–70% coarse and fine particles in its composition, so replacing this material with anot
Externí odkaz:
https://doaj.org/article/776a8053830a42dbb281e8f01c78297f
Publikováno v:
Materials, Vol 15, Iss 12, p 4164 (2022)
Several types of research currently use machine learning (ML) methods to estimate the mechanical characteristics of concrete. This study aimed to compare the capacities of four ML methods: eXtreme gradient boosting (XG Boost), gradient boosting (GB),
Externí odkaz:
https://doaj.org/article/9a4d02e1bdec49eda43d1782f174d1d7
Publikováno v:
Mathematics, Vol 10, Iss 13, p 2245 (2022)
The composition of self-compacting concrete (SCC) contains 60–70% coarse and fine aggregates, which are replaced by construction waste, such as recycled aggregates (RA). However, the complexity of its structure requires a time-consuming mixed desig
Externí odkaz:
https://doaj.org/article/baed49b2b4f64c9eb939beb990069a1a
Publikováno v:
Air, Soil and Water Research, Vol 14 (2021)
Water is one of the most important erosive agents in roadside hillslopes. When these are built with ineffective drainage systems, erosion occurs, reducing road’s service life. However, these systems are not receiving the appropriate importance, giv
Externí odkaz:
https://doaj.org/article/05b778f97e8440659d451a886bc9694e
Autor:
Rebeca Martínez-García, P. Jagadesh, Gabriel Búrdalo-Salcedo, Covadonga Palencia, María Fernández-Raga, Fernando J. Fraile-Fernández
Publikováno v:
Materials, Vol 14, Iss 13, p 3480 (2021)
Most concrete studies are concentrated on mechanical properties especially strength properties either directly or indirectly (fresh and durability properties). Hence, the ratio of split tensile strength to compressive strength plays a vital role in d
Externí odkaz:
https://doaj.org/article/cb320ff4287140209952a30845cd80c0
Autor:
María Fernández-Raga, Roberto Fraile, Covadonga Palencia, Elena Marcos, Ana María Castañón, Amaya Castro
Publikováno v:
Atmosphere, Vol 11, Iss 5, p 443 (2020)
This paper compares two different geographical sites, Aveiro and León, from different climatic regions, oceanic and continental, but which share the same type of weather (according to Lamb’s classification). The analysis was carried out over one y
Externí odkaz:
https://doaj.org/article/867622b2566b412c9ae30aa69e577acc
Autor:
Roberto Fraile, Amaya Castro, Miguel González-Colino, Elisabeth Alonso-Blanco, María Fernández-Raga, Covadonga Palencia, Ana I. Calvo
Publikováno v:
Advances in Meteorology, Vol 2015 (2015)
A precipitation event that took place on 12 October 2008 in Madrid, Spain, is analyzed in detail. Three different devices were used to characterize the precipitation: a disdrometer, a rain gauge, and a Micro Rain Radar (MRR). These instruments determ
Externí odkaz:
https://doaj.org/article/4bc170b9f9ab4ac58c95ded50efc665b
Autor:
ANA MARÍA CASTAÑÓN GARCÍA, Covadonga Palencia, REBECA MARTÍNEZ-GARCÍA, Fernando Jorge Fraile Fernández, Gabriel Búrdalo Salcedo, Maria Fernandez-Raga
Publikováno v:
Sustainability; Volume 14; Issue 10; Pages: 6269
University education in times of COVID-19 was forced to seek alternative teaching/learning methods to the traditional ones, having to abruptly migrate to the online modality, changes that have repercussions on student satisfaction. That is why this s