圆钢管锂渣再生混凝土长柱力学性能研究

Study on mechanical properties of circular lithium slag concrete filled steel tube long columns

为了研究圆钢管锂渣再生混凝土长柱的力学性能,共设计了10根长柱试件进行试验研究。研究结果表明:再生混凝土取代粗骨料,随取代率的增加试件的力学性能降低,但是掺入锂渣可以弥补再生混凝土力学性能上的损失。且试件的性能随着锂渣取代率的增加,先增加后降低。随长细比的增加,极限承载力呈整体下降趋势。从整体看,锂渣和再生混凝土的掺入,试件表现出良好的刚度和延性。

In order to study the mechanical properties of long circular steel tubular lithium slag recycled concrete columns,10 long column specimens were designed for experimental research.The results show that the mechanical properties of recycled concrete decrease with the increase of replacement rate,but the loss of mechanical properties of recycled concrete can be made up by adding lithium slag.The properties of the specimens first increased and then decreased with the increase of lithium slag substitution rate.With the increase of slenderness ratio,the ultimate bearing capacity decreases as a whole.On the whole,the specimens show good stiffness and ductility with the addition of lithium slag and recycled concrete.