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

Porosity in Cement Paste01:18

Porosity in Cement Paste

553
The porosity of concrete is a measure of the void spaces within its structure. These spaces impact its strength and durability significantly. When water and cement interact, a chemical reaction called hydration creates a semi-solid paste. This paste includes combined water, making up approximately 23% of the cement's dry mass, and gel water, which fills minuscule voids known as gel pores, accounting for about 28% of the cement gel volume.
The balance of water to cement in the mix is...
553
Permeability of Concrete01:25

Permeability of Concrete

634
Permeability in the context of concrete refers to how easily liquids or gases can pass through the material. This quality is crucial for assessing the water-tightness and durability of concrete structures and their resistance to chemical attacks. Concrete permeability can be determined through comparative laboratory tests. These tests typically involve sealing a concrete specimen from the sides, applying water pressure to the top surface with pressure, and measuring the amount of water passing...
634
Total Voids in Concrete01:12

Total Voids in Concrete

1.2K
Total voids in concrete encompass gel water volume, capillary pores, and entrapped air. Gel water (retained within the cement hydration products) and physically entrapped or adsorbed water are significant for the hydration process. For complete hydration, it's estimated that the space needed for the products of a cubic centimeter of cement doubles. Capillary pores constitute the unoccupied space within the hydrated cement paste, with their size largely influenced by the water-to-cement...
1.2K
Porosity and Absorption of Aggregate01:20

Porosity and Absorption of Aggregate

950
Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the...
950
Types of Fluids01:27

Types of Fluids

1.2K
Fluids can be classified into Newtonian and non-Newtonian fluids based on their response to shear stress. Newtonian fluids have a linear relationship between shear stress and the shear strain rate, following Newton's law of viscosity. Their viscosity remains constant regardless of the shear rate, making their behavior predictable and easier to analyze. Common examples include water, air, oil, and gasoline.
In contrast, non-Newtonian fluids do not follow Newton's law of viscosity, and...
1.2K
Characteristics of Fluids01:20

Characteristics of Fluids

8.8K
When a force is applied parallel to the top surface of a solid, it resists the applied force due to the internal frictional forces between the layers of the solid known as shearing resistance. However, when the force is removed, the shearing forces restore the original shape of the solid. Other deformation forces also cause temporary changes in shape if the forces are not beyond a threshold magnitude. Solids tend to retain their shape, making the study of their rest and motion easier. Beyond...
8.8K

También podría leer

Artículos Relacionados

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

Ordenar por
Same author

Finite-concentration thermodynamics of amphipathic peptide adsorption on curved lipid membranes.

Physical chemistry chemical physics : PCCP·2026
Same author

Continuous invariant-based asymmetries of periodic crystals quantify deviations from higher symmetry.

IUCrJ·2026
Same author

Reduced Symmetry Metal-Organic Cage-to-Framework Materials.

Angewandte Chemie (International ed. in English)·2026
Same author

A reflection on synthesis by extrusion ten years on: achievements, challenges and opportunities for solvent-free, sustainable, continuous chemical manufacturing.

Chemical science·2026
Same author

Chemist Eye: a visual language model-powered system for safety monitoring and robot decision-making in self-driving laboratories.

Digital discovery·2026
Same author

Environmental dependence of colony morphologies in Labyrinthula species.

Journal of the Royal Society, Interface·2026

Video Experimental Relacionado

Updated: Mar 30, 2026

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications
08:38

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications

Published on: January 16, 2018

11.3K

Líquidos con porosidad permanente

Nicola Giri1, Mario G Del Pópolo2,3, Gavin Melaugh2

  • 1School of Chemistry and Chemical Engineering, Queen's University Belfast, David Keir Building, Stranmillis Road, Belfast BT9 5AG, UK.

Nature
|November 13, 2015
PubMed
Resumen

Los investigadores desarrollaron líquidos de flujo libre con porosidad permanente, superando las limitaciones de los materiales sólidos para aplicaciones como la captura de dióxido de carbono. Estos nuevos líquidos porosos ofrecen ventajas significativas en los procesos químicos y la solubilidad en gases.

Más Videos Relacionados

Microbubble Fabrication of Concave-porosity PDMS Beads
11:52

Microbubble Fabrication of Concave-porosity PDMS Beads

Published on: December 15, 2015

8.8K
Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
08:02

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Published on: February 11, 2020

9.5K

Videos de Experimentos Relacionados

Last Updated: Mar 30, 2026

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications
08:38

Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications

Published on: January 16, 2018

11.3K
Microbubble Fabrication of Concave-porosity PDMS Beads
11:52

Microbubble Fabrication of Concave-porosity PDMS Beads

Published on: December 15, 2015

8.8K
Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
08:02

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Published on: February 11, 2020

9.5K

Área de la Ciencia:

  • Ciencias de los materiales
  • Ingeniería Química
  • Química supramolecular

Sus antecedentes:

  • Los sólidos porosos como las zeolitas y los marcos metálico-orgánicos son valiosos para las separaciones y la catálisis, pero enfrentan desafíos de implementación en los sistemas de flujo convencionales.
  • Los disolventes líquidos son preferidos para algunas aplicaciones, como la captura de dióxido de carbono, debido a su fácil integración en la infraestructura existente.
  • Un desafío clave es combinar la fluidez con la porosidad permanente para procesos químicos avanzados.

Objetivo del estudio:

  • Para crear líquidos de flujo libre con propiedades a granel determinadas por porosidad permanente.
  • Desarrollar nuevos materiales porosos que superen las limitaciones de los adsorbentes sólidos tradicionales.
  • Para permitir nuevas posibilidades en la separación molecular, catálisis y almacenamiento de gases.

Principales métodos:

  • Diseño de moléculas de jaula con espacios porosos bien definidos.
  • Alta solubilidad de las moléculas de la jaula en solventes demasiado grandes para entrar en los poros.
  • Síntesis de jaulas porosas "revueltas" altamente solubles a partir de reactivos comerciales.

Principales resultados:

  • Se han alcanzado altas concentraciones de jaulas desocupadas (aprox. 500 veces mayor que las soluciones convencionales).
  • Demostró un aumento de ocho veces en la solubilidad del gas metano.
  • Desarrolló una ruta de síntesis escalable de un solo paso para los materiales líquidos porosos.

Conclusiones:

  • Se introdujo una nueva clase de materiales porosos funcionales: líquidos porosos de flujo libre.
  • El principio de diseño se centra en las moléculas de la jaula insolubles en el disolvente, evitando la penetración de poros.
  • Estos materiales ofrecen una plataforma prometedora para separaciones y procesos químicos avanzados.