Materiales de Construcción, Vol 54, No 275 (2004)

Los Angeles Test and Polished Stone Value of ophite in Cantabria: a petrophysical interpretation


https://doi.org/10.3989/mc.2004.v54.i275.247

G. Fernández Maroto
Departamento de Ciencias de la Tierra y Física de la Materia Condensada E.U.I.T. de Minas (Torrelavega). Universidad de Cantabria, Spain

L. M. Suárez del Río
Departamento de Geología. Universidad de Oviedo, Spain

Abstract


Crushed aggregate obtained from certain ophite outcrops in Cantabria was tested with the Los Angeles and polished stone value (PSV) procedures. Linear regression analysis was used to identify the pétrographie parameters that account for aggregate performance in these two tests. The most abundant and common minerals in the ophite were observed to condition such performance in the Los Angeles method. In PSV behaviour was determined by the existence or otherwise of a rough micro texture -the result of the existence of minerals with different hardness values-, which increases aggregate resistance to polishing action.

Keywords


aggregate; Polished Stone Value; Los Angeles abrasion Test; petrography; physical properties

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