Artificial Aggregates

Artificial aggregates are manufactured granular materials designed to replace or supplement natural stone, gravel, or sand in engineering applications. They are produced by processing materials such as industrial byproducts, recycled construction waste, or other mineral feedstocks through crushing, grading, binding, or thermal treatment to achieve targeted particle size, strength, density, and durability. In concrete, asphalt, road bases, drainage layers, and lightweight structural materials, their controlled properties support reliable performance while reducing dependence on quarried resources. Selecting an artificial aggregate requires evaluating water absorption, abrasion resistance, chemical stability, and compatibility with the surrounding matrix, making these materials important for resource-efficient and durable infrastructure.

Artificial Aggregates - Related Videos

Education

JoVE Lab Manual - Biology

Artificial Selection - Concepts

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2019

Natural Selection and Adaptive Evolution In natural settings, adaptive evolution takes place by natural selection, a process in which differences in traits lead to differences in survival and reproductive success between individuals. This happens because individuals with certain phenotypes have a higher probability of survival and/or produce more surviving offspring than individuals with other phenotypes. A classic example of this was demonstrated by Rosemary and Peter Grant studying the...

Artificial Selection - Student Protocol

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2019

Observing Artificial Selection in Plants ExpandTo begin the experiment, collect five two-week old grown plants from the generation one population that appear healthy. Note: Plants should appear green, not wilted, and not have damaged leaves. Experimental Hypothesis: The experimental hypothesis for this lab might be that the number of lead trichomes varies naturally, but the average number will increase over generations if only plants with the highest number of trichomes are interbred or...

Aggregates for Concrete and Asphaltic Mixes

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2023

Source: Roberto Leon, Department of Civil and Environmental Engineering, Virginia Tech, Blacksburg, VA Concrete and asphalt are by far the most common construction materials used today. Concrete is a composite material consisting of cement, water, air, coarse aggregate, and fine aggregates. Fine aggregates are typically sands and coarse aggregates are natural or crushed rocks. Chemical admixtures to modify certain specific properties are also commonly used (i.e., superplasticizers to make the...

Research

JoVE EoE - Bacterial Growth and Techniques

Preparation of Artificial Sputum Medium to Emulate Cystic Fibrosis Lung Sputum Ex Vivo

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2025

Source: Vieira, J., et al. Design and Development of a Model to Study the Effect of Supplemental Oxygen on the Cystic Fibrosis Airway Microbiome. J. Vis. Exp. (2021).This video demonstrates the preparation of an artificial sputum medium that mimics the viscosity, nutrient composition, and pH of cystic fibrosis lung sputum. The resulting medium provides a physiologically relevant platform for ex vivo studies.

Research

JoVE Journal - Medicine
Free Sample

Implantation of the Syncardia Total Artificial Heart

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Cited by 12 •

2014

The purpose of this manuscript is to briefly review indications, management, and outcomes for the total artificial heart. Video operative techniques for device implantation are presented.

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