Experimental Study on Axial Pressure Bearing Capacity of Recycled Concrete Columns
Experimental Study on Axial Pressure Bearing Capacity of Recycled Concrete Columns
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发表时间：
2008
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通讯作者：
J. Xia
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作者：
J. Xia
通过试验研究了再生粗骨料不同取代率对再生混凝土柱轴心和偏心受压性能的影响。采用人工破碎法对废旧混凝土进行破碎。按照普通混凝土配合比的设计要求，通过改变再生粗骨料的掺量制成再生粗骨料混凝土。通过对9根再生混凝土柱和3根普通混凝土柱轴心受压性能的初步研究，发现再生混凝土柱与普通混凝土柱在破坏机理上是相似的。随着粗骨料掺量的增加，再生混凝土柱的承载能力逐渐降低。但降幅不大，当粗骨料掺量占15%时，再生混凝土柱的承载能力是普通混凝土柱的94%，在合适掺量的基础上，将再生混凝土柱投入实际应用是可行的。
The effect of different replacement percentages of recycled coarse aggregate on the axial and eccentric compression performance of recycled concrete columns is experimentally investigated.Adopting the manually breaking method,the waste concrete was crushed.According to the design requirements of proportioning ratio of ordinary concrete,by changing the mixture amount of recycled coarse aggregate,the recycled coarse aggregate concrete were made.Through the pilot study of the capacity of nine recycled concrete columns and three ordinary concrete column axials′ compression,it turns out that recycled concrete columns and ordinary concrete columns are similar in destruction mechanism.The bearing capacity of the recycled concrete column gradually decreases with the increase of the amount of coarse aggregate mixture,but without significant decreasing range.When the coarse aggregate mixture amount accounts for 15%,the bearing capacity of the recycled concrete column is 94% as much as that of the ordinary concrete column.On the ground of proper mixture amount,it is feasible to put the recycled concrete columns into actual application.