Summary
The Effect of Particle Strength on the Compression of Crushed Aggregate
The paper examines the variables controlling the compression of rock aggregates, and presents experimental data on the behaviour of limestone, dolerite and sandstone samples in size ranges up to 19.0 mm.
The results suggest that while the initial void ratio of the aggregate determines the degree of compressive strain potentially available, the average aggregate dimension (d m) and intrinsic compressive strength (S c) determine the compressive stressstrain characteristics in the form,
Zusammenfassung
Einige Faktoren, die die Kompressibilität von Aggregaten bestimmen
Diese Arbeit untersucht die Variablen, die die Kompressibilität von Gesteinsaggregaten bestimmen, und liefert experimentelle Angaben über das Verhalten von Kalkstein-, Dolerit- und Sandsteinproben bis zu 19,0 mm Korngröße.
Die Ergebnisse weisen darauf hin, daß, während der anfängliche relative Porenraum des Aggregats den Grad der potentiell vorhandenen Kompressionsspannung bestimmt, der durchschnittliche Aggregatsdurchmesser (d m) und die eigentliche Druckfestigkeit (S c) die Kompressibilitäts-Spannungs-Verformungscharakteristik laut der Formel
bestimmen.
Résumé
Influence de la résistance des particules sur la compression d'un agrégat broyé
Les auteurs examinent les paramètres qui affectent la compressibilité des agrégats de roches et présentent des résultats expérimentaux obtenus avec des échantillons de calcaire, de dolérite et de grès, sur l'influence du diamètre des grains en-dessous de 19 mm.
Les résultats suggèrent que l'indice des vides initial impose le taux de la déformation à la compression dont on dispose, cependant que le diamètre des grains (d m) et la résistance à la compression (S c) définissen les caractéristiques de la courbe de compressibilité.
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References
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Farmer, I.W., Attewell, P.B. The effect of particle strength on the compression of crushed aggregate. Rock Mechanics 5, 237–248 (1973). https://doi.org/10.1007/BF01301797
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DOI: https://doi.org/10.1007/BF01301797
Key words
Symbols
- Strain
- Stress
- Average particle size
- Compressive strength
- Void ratio
- Initial void ratio
- Final void ratio
- Angularity number
- Uniformity coefficient
- Deformation
- Force
- Modulus of elasticity
- Poisson's ratio
Stichwörter
Symbole
- Verformung
- Spannung
- Korndurchmesser
- Druckfestigkeit
- relativer Porenraum
- anfänglicher relativer Porenraum
- endrelativer Porenraum
- Eckigkeit
- Ungleichförmigkeitsgrad
- Verformung
- Kraft
- Elastizitätsmodul
- Poisson-Zahl
Mots cléfs
- Agrégat
- Compressibilité
- résistance à la compression
- taille des particules
- enrochement
- mécanique des roches
- indice des vides