Relationship between Retrographical and Physical Properties of Aggregates  

作　　者：庞凌 

机构地区：[1]School of Sciences, Wuhan University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2010年第4期678-681,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Scientific Research Foundation for Dr, Wuhan University of Technology, Wuhan, China

摘　　要：The relationship between petrographical and physical properties of limestone, basalt, granite and gneiss was investigated. Petrographical data were quantified from polished thin sections with a polarising microscope to determine the modal composition. The properties of resistance to fragmentation and abrasion were determined by Los Angeles abrasion test and crushing test. The shape characteristic was measured by Flakiness index test. The experimental results indicate that abundance of fineto medium-grained minerals （especially of plagioclase, quartz and feldspar） are prime, and strong micrographic intergrowth texture with interlocking grain boundaries have the great positive influence on the physical properties. It is also indicated that petrographical properties and surface texture of rocks can decide the potentiality of rocks as raw materials with high quality on resisting fragmentation and abrasion. Analysis of Integration of petrographical data and mechanical properties is ideal for the selection of aggregates used in asphalt concrete.The relationship between petrographical and physical properties of limestone, basalt, granite and gneiss was investigated. Petrographical data were quantified from polished thin sections with a polarising microscope to determine the modal composition. The properties of resistance to fragmentation and abrasion were determined by Los Angeles abrasion test and crushing test. The shape characteristic was measured by Flakiness index test. The experimental results indicate that abundance of fineto medium-grained minerals （especially of plagioclase, quartz and feldspar） are prime, and strong micrographic intergrowth texture with interlocking grain boundaries have the great positive influence on the physical properties. It is also indicated that petrographical properties and surface texture of rocks can decide the potentiality of rocks as raw materials with high quality on resisting fragmentation and abrasion. Analysis of Integration of petrographical data and mechanical properties is ideal for the selection of aggregates used in asphalt concrete.

关 键 词：AGGREGATE PETROGRAPHY physical properties flakiness index 

分 类 号：P584[天文地球—岩石学]