Aggregate Wear Resistance
Aggregate Wear Resistance - Related Videos
09:14
Tracking Hypoxic Signaling within Encapsulated Cell Aggregates
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Cited by 10 •
2011
A method for photo-encapsulation of cells in a crosslinked PEG hydrogel is described. Hypoxic signaling within encapsulated murine insulinoma (MIN6) aggregates is tracked using a fluorescent marker system. This system allows serial examination of cells within a hydrogel scaffold and correlation of hypoxic signaling with changes in cell phenotype.
10:10
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...
12:49
Measurement of Aggregate Cohesion by Tissue Surface Tensiometry
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Cited by 10 •
2011
We describe a method of measuring binding energy, expressible as tissue surface tension, between cells within 3D tissue-like aggregates. Differences in tissue surface tension have been demonstrated to correlate with invasiveness of lung, muscle, and brain tumors, and are fundamental determinants of establishing spatial relationships between different cell types.
09:10
Precision of In Vivo Quantitative Tooth Wear Measurement Using Intra-Oral Scans
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Cited by 14 •
2022
Quantitative wear measurement is a method of increasing importance in measuring tooth wear progression. We here describe a protocol, its precision, and its intra/inter-rater precision for the acquisition and superimposition of repeated in vivo scanned dentitions in patients with moderate to severe wear, reporting on both height and volume measurements.
11:57
Methods to Study Changes in Inherent Protein Aggregation with Age in Caenorhabditis elegans
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Cited by 7 •
2017
The goal of the method presented here is to explore protein aggregation during normal aging in the model organism C. elegans. The protocol represents a powerful tool to study the highly insoluble large aggregates that form with age and to determine how changes in proteostasis impact protein aggregation.
FAQs
Mineral composition, particle texture, porosity, and strength all influence performance. These characteristics affect how readily particles lose surface material or break when subjected to abrasion, impact, and crushing. Mineral composition and strength relate to resistance against breakdown, while texture and porosity influence particle response during repeated contact. Considering them together helps engineers evaluate aggregates for demanding loading conditions.
Repeated movement creates friction at particle contacts, while impacts and crushing apply additional forces that can detach surface material or break particles into smaller pieces. As degradation progresses, the aggregate produces finer particles. This mechanism matters because changes in particle-size characteristics can influence how the construction material performs under continued traffic or environmental loading.
Abrasion, impact, and crushing represent different ways repeated contact and movement can damage mineral particles. Abrasion removes material from particle surfaces, while impact and crushing cause breakdown through contact forces and compressive loading. Evaluating resistance across these mechanisms gives a broader indication of how an aggregate may behave when exposed to varied traffic or environmental loading.
Standardized laboratory abrasion and degradation tests provide results that engineers can compare during material selection. These assessments indicate how a candidate aggregate responds to processes that produce wear and breakdown. The findings help determine whether a material is suitable for pavements, concrete, railway ballast, or other heavily loaded systems where continued particle degradation could affect performance.
Engineers evaluate candidate aggregate using standardized abrasion or degradation testing, then interpret the resulting wear performance in relation to the intended construction use. They use that information to select materials for systems exposed to substantial loading. Linking test outcomes to the application supports decisions intended to preserve structural stability, skid performance, drainage, and service life.
High wear resistance is particularly relevant in pavements, concrete, railway ballast, and other heavily loaded construction systems. In these settings, limiting particle breakdown helps the material retain characteristics that support structural stability, skid performance, drainage, and service life. Better resistance can also reduce maintenance needs, making it important for design reliability and long-term engineering performance.