Material Behavior of Deep-Frozen Bulk Solids at Compression

被引:0
|
作者
Mueller, Peter [1 ]
Gomolla, Franziska [1 ]
Tomas, Juergen [1 ]
机构
[1] Univ Magdeburg, D-39106 Magdeburg, Germany
关键词
Druckbeanspruchung; Materialverhalten; Tiefgefrorene Schuttguter; Compression behavior; Deep frozen bulk solids; Material behavior; STRAIN-RATE; TEMPERATURE; STRENGTH; SAND;
D O I
10.1002/cite.201300099
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Die Arbeit soll das komplexe Zusammenspiel ausgewahlter Einflussparameter auf das Materialverhalten tiefgefrorener Schuttguter verdeutlichen. Zudem sollen die Versuchsergebnisse in der Praxis helfen, das Materialverhalten besser einschatzen zu konnen. Als Versuchsmaterialien wurden Steinkohle, Eisenerz und Sand ausgewahlt und mit Wasser gesattigte, wurfelformige Proben in einem Tiefkuhlschrank uber einen definierten Zeitraum eingefroren. Anschlie ss end wurden einaxiale Druckversuche mit den tiefgefrorenen Proben durchgefuhrt, wobei der Einfluss der Einfrierzeit und der Partikelgro ss e auf das mechanische Verhalten analysiert wurde. The work is intended to clarify complex interactions and various influencing parameters on the material behavior of deep-frozen bulk solids. The results should ensure a better evaluation of the material behavior in practical applications. Hard coal, iron ore and sand have been selected as material samples, and cube shaped samples saturated with water have been deep-frozen over a defined period. Subsequently, uniaxial compression tests have been carried out, whereby the influence of residence time in the freezer and particle size on the mechanical behavior have been analyzed.
引用
收藏
页码:347 / 353
页数:7
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