Behavior of normal-strength recycled aggregate concrete filled steel tubes under combined loading

2017 ◽  
Vol 130 ◽  
pp. 23-40 ◽  
Author(s):  
Jie Chen ◽  
Yuyin Wang ◽  
Charles W. Roeder ◽  
Ji Ma
Keyword(s):  
Recycled Aggregate Concrete ◽  
Combined Loading ◽  
Recycled Aggregate ◽  
Steel Tubes ◽  
Aggregate Concrete ◽  
Normal Strength ◽  
Concrete Filled Steel Tubes

Properties of Recycled Aggregate Concrete Filled Steel Tubes

2014 ◽  
Vol 1065-1069 ◽  
pp. 1323-1326
Author(s):  
Yi Jie Huang ◽  
Huang Sheng Sun
Keyword(s):  
Mechanical Behavior ◽  
Steel Tube ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Test Results ◽  
Structural Elements ◽  
Steel Tubes ◽  
Aggregate Concrete ◽  
Flexural Performance ◽  
Concrete Filled Steel Tubes

A review on the properties of recycled aggregate concrete filled steel tubes (RACSFT) was presented, followed by the short overview on the related researches. The uniaxial mechanical behavior, flexural performance, creep performance as well as eccentric loaded behavior of RACSFT specimens were discussed. It was found that the differences between the element made of recycled aggregate concrete (RAC) and that of natural aggregate concrete (NAC) could not be ignored. The performance of the RACFST is inferior to that of natural concrete filled steel tube (CFST). But, the RACSFT can be applied into structural elements safely. Based on the test results, it was also concluded that the RACSFT is an effective method to improve the application of RAC.

scholarly journals Behaviour of recycled aggregate concrete under combined compression and shear stresses

2018 ◽  
Vol 68 (331) ◽  
pp. 162
Author(s):  
K. Liu ◽  
J. Yan ◽  
C. Zou
Keyword(s):  
Failure Criterion ◽  
Coarse Aggregate ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Shear Stresses ◽  
Aggregate Concrete ◽  
Model Code ◽  
Eurocode 2 ◽  
Model Code 2010 ◽  
Normal Strength

To investigate the behaviour of recycled aggregate concrete (RAC) under combined compression and shear stresses, 75 hollow cylinder specimens prepared with various replacement ratios of recycled coarse aggregate (RCA) were tested with a self-designed loading device. The results showed that the failure pattern was similar for RAC with different replacement ratios of RCA. The ultimate shear stress improved with an increasing axial compression ratio of less than 0.6 and declined after exceeding 0.6. A modified failure criterion for RAC with normal strength under combined compression and shear stresses was proposed. A new procedure to predict the shear strength for RAC beams without stirrups was developed based on the proposed failure criterion, showing a better correlation with the experimental results than the predictions calculated by GB50010, Eurocode 2, fib Model Code 2010 and ACI 318-11.

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