Physical Properties of Crushed Air-cooled Blast Furnace Slag and Numerical Representation of Its Morphology Characteristics  

作　　者：王爱国 邓敏 

机构地区：[1]Anhui Key Laboratory of Advanced Building Materials,Anhui University of Architecture [2]State Key Laboratoryof Materials-Oriented Chemical Engineering,College of Materials Science and Engineering,Nanjing University of Technology

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2012年第5期973-978,共6页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the National Basic Research Program of China(No.2009CB623105);the Natural Science Foundation of Education Agency of Anhui Province(No.KJ2012A052);the Anhui Provincial Natural Science Foundation(No.1208085ME82);the Doctor Fund of Anhui University of Architecture(No.20123302)

摘　　要：Physical properties and geometrical morphologies of crushed air-cooled blast furnace slag （SCR） and crushed limestone （LCR） were comparatively investigated. The shape, angularity, surface texture and internal pore structure of aggregate particles for different size and gradation were numerically represented by sphericity （ψ） and shape index （SI）, angularity number （AN）, index of aggregate particle shape and texture （IAPST）, porosity and pore size, respectively. The results show that SCR is a porous and rough aggregate. Apparent density, void, water absorption and smashing index of SCR are obviously higher than those of LCR with the same gradation, respectively. However, bulk density of SCR is lower than that of LCR with the same gradation. SI, AN, IAPST and porosity of SCR are obviously higher than those of LCR with the same gradation, respectively. The smaller particle size of SCR, the larger of its AN, IAPST and porosity.Physical properties and geometrical morphologies of crushed air-cooled blast furnace slag （SCR） and crushed limestone （LCR） were comparatively investigated. The shape, angularity, surface texture and internal pore structure of aggregate particles for different size and gradation were numerically represented by sphericity （ψ） and shape index （SI）, angularity number （AN）, index of aggregate particle shape and texture （IAPST）, porosity and pore size, respectively. The results show that SCR is a porous and rough aggregate. Apparent density, void, water absorption and smashing index of SCR are obviously higher than those of LCR with the same gradation, respectively. However, bulk density of SCR is lower than that of LCR with the same gradation. SI, AN, IAPST and porosity of SCR are obviously higher than those of LCR with the same gradation, respectively. The smaller particle size of SCR, the larger of its AN, IAPST and porosity.

关 键 词：crushed air-cooled blast furnace slag crushed limestone physical property morphology characteristic numerical representation 

分 类 号：TF51[冶金工程—钢铁冶金]