Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Types of Coprecipitation01:10

Types of Coprecipitation

Coprecipitation is the contamination of a precipitate by otherwise soluble species and occurs via different processes. In colloidal precipitates, coprecipitation occurs via surface adsorption. For instance, barium sulfate has a primary layer of adsorbed barium ions and a secondary layer of nitrate counterions. This results in contamination of the precipitate by barium nitrate.
Sometimes, ions in a crystal lattice can undergo isomorphous replacement by inclusions of similar charge and size. For...
Types of Building Stone01:30

Types of Building Stone

Building stones, essential materials for construction, are extracted from natural rock deposits and processed into specific forms and dimensions suitable for various building applications. These stones are broadly classified into three types based on their geological formation: igneous, sedimentary, and metamorphic.
Igneous rocks are formed from the solidification of magma or lava. An example is granite, known for its durability and resistance to weathering, making it ideal for parts of...
Quarrying of Stone01:15

Quarrying of Stone

Quarrying is the process of extracting stone from a quarry, where specialized techniques are employed to remove large blocks of stone safely and efficiently. This process can involve controlled explosions or more precision-oriented methods such as cutting and drilling.
One common method involves using a diamond belt saw to cut large blocks from the quarry face. These blocks can be about 50 feet long and 12 feet high. After the initial vertical cut, drilling is performed at the base of the block.
Shape and Texture of Coarse Aggregate01:25

Shape and Texture of Coarse Aggregate

Aggregate shape is classified based on the relative sharpness or roundness of the edges and corners. This classification includes categories like rounded, angular, elongated, and flaky, each with specific characteristics. Rounded aggregates, fully shaped by attrition, are typical of river or seashore gravel, while angular aggregates, such as crushed rock, have well-defined edges. Aggregates that are elongated and flaky are less desirable, as they can reduce the workability and strength of...
Unsoundness of Aggregate due to Volume Change01:26

Unsoundness of Aggregate due to Volume Change

Unsoundness in aggregates due to volume changes is primarily caused by the physical alterations aggregates undergo, such as freezing and thawing, thermal changes, and wetting and drying. Unsound aggregates, when subjected to these changes, result in volume change upon disintegration. This, in turn, contributes to the deterioration of concrete, including scaling, pop-outs, and cracking. Particular types of aggregates, such as porous flints, cherts, and those containing clay minerals, are...
Frost Action on Concrete01:27

Frost Action on Concrete

Concrete structures in cold climates, such as those along roadsides, can retain moisture. This moisture makes them susceptible to frost-related damage when temperatures fall below freezing. Adding moisture worsens the damage during temperature fluctuations, leading to repeated freezing and thawing. De-icing salts, spread over these structures to melt ice, add to the freeze-thaw cycle, and draw even more moisture into the concrete.
This freeze-thaw cycle primarily causes surface scaling, where...

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Real-time landslide warning during heavy rainfall.

Science (New York, N.Y.)·1987
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Jul 10, 2026

Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
09:13

Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction

Published on: April 1, 2017

Avalanchas de roca causadas por terremotos: características de la fuente.

D K Keefer

    Science (New York, N.Y.)
    |March 23, 1984
    PubMed
    Resumen

    Las catastróficas avalanchas de roca tienen más probabilidades en pendientes empinadas y altas con roca fracturada. La subducción por erosión y los signos de baja resistencia también indican una mayor susceptibilidad a las avalanchas.

    Área de la Ciencia:

    • Geología Geología Geología.
    • Ingeniería Geotécnica Ingeniería Geotécnica.
    • Peligros naturales Los peligros naturales.

    Sus antecedentes:

    • Las avalanchas de roca representan importantes peligros geológicos.
    • Comprender la inestabilidad de la pendiente es crucial para la evaluación del peligro.

    Objetivo del estudio:

    • Identificar los principales factores geológicos y topográficos que contribuyen a las catastróficas avalanchas de roca.
    • Establecer criterios para predecir pendientes de alto riesgo.

    Principales métodos:

    • Análisis de un conjunto de datos globales de terremotos históricos y avalanchas de rocas asociadas.
    • Correlación de la ocurrencia de deslizamientos de tierra con la altura de la pendiente, el ángulo, los patrones de erosión y las características de la masa de roca.

    Más Videos Relacionados

    Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
    07:58

    Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt

    Published on: August 7, 2017

    Simulating Impacts of Ice Storms on Forest Ecosystems
    06:27

    Simulating Impacts of Ice Storms on Forest Ecosystems

    Published on: June 30, 2020

    Videos de Experimentos Relacionados

    Last Updated: Jul 10, 2026

    Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction
    09:13

    Characterization of Ultra-fine Grained and Nanocrystalline Materials Using Transmission Kikuchi Diffraction

    Published on: April 1, 2017

    Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
    07:58

    Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt

    Published on: August 7, 2017

    Simulating Impacts of Ice Storms on Forest Ecosystems
    06:27

    Simulating Impacts of Ice Storms on Forest Ecosystems

    Published on: June 30, 2020

    Principales resultados:

    • Las laderas que superan los 150 metros de altura y 25 grados de pendiente son muy susceptibles.
    • El socavamiento fluvial o glacial, la roca intensamente fracturada y otros indicadores de baja resistencia son comunes en pendientes inestables.
    • Una combinación de estos factores aumenta significativamente el riesgo de catastróficas avalanchas de roca.

    Conclusiones:

    • Las características topográficas y geológicas específicas son fuertes predictores de eventos catastróficos de avalanchas de roca.
    • Esta investigación proporciona información valiosa para el análisis de riesgos sísmicos y las evaluaciones de la estabilidad de pendientes.