Relationship between polished stone value (PSV) and Nordic abrasion value (A N) of volcanic rocks
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- 作者：K. Krutilová ; R. Přikryl
- 关键词：Crushed stone ; Volcanic rocks ; Polished stone value ; Nordic abrasion value ; Petrography
- 刊名：Bulletin of Engineering Geology and the Environment
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：76
- 期：1
- 页码：85-99
- 全文大小：
- 刊物类别：Earth and Environmental Science
- 刊物主题：Geotechnical Engineering & Applied Earth Sciences; Geoengineering, Foundations, Hydraulics; Geoecology/Natural Processes; Nature Conservation;
- 出版者：Springer Berlin Heidelberg
- ISSN：1435-9537
- 卷排序：76
文摘
A set of 39 different volcanic rocks was studied for performance as crushed stone for road surfacing (wearing course) aggregates using two technological tests: the polished stone value (PSV) test, aimed at evaluating resistance to polishing (skid resistance), and the Nordic abrasion value (AN) test, as a proxy to wear by studded tires (resistance to abrasion). In order to understand better the observed relationships, the studied volcanic rocks were split into five petrographic-technological subgroups (rhyolite/porphyry, phonolites, basalts s.l., spilites, and melaphyres/diabase) based on their composition, rock fabric, geological age, and post-genetic history. Response of each of these subgroups to the applied tests is not always the same, but generally is controlled by composition and rock macro- and microfabric. Despite the fact that positive contributors to skid resistance (e.g., increasing contrasting hardness of rock-forming components, presence or absence of certain phenocrysts) have the opposite effect on wear by studded tires, it is not possible to make any reliable prediction of PSV from AN or vice versa.