Sintering graded foamed beads: Compressive properties

2021 ◽  
pp. 52052
Author(s):  
Fabrizio Errichiello ◽  
Aniello Cammarano ◽  
Ernesto Di Maio ◽  
Luigi Nicolais
2019 ◽  
Vol 26 (4) ◽  
pp. 197-208
Author(s):  
Leo Gu Li ◽  
Albert Kwok Hung Kwan

Previous research studies have indicated that using fibres to improve crack resistance and applying expansive agent (EA) to compensate shrinkage are both effective methods to mitigate shrinkage cracking of concrete, and the additions of both fibres and EA can enhance the other performance attributes of concrete. In this study, an EA was added to fibre reinforced concrete (FRC) to produce concrete mixes with various water/binder (W/B) ratios, steel fibre (SF) contents and EA contents for testing of their workability and compressive properties. The test results showed that adding EA would slightly increase the superplasticiser (SP) demand and decrease the compressive strength, Young’s modulus and Poisson’s ratio, but significantly improve the toughness and specific toughness of the steel FRC produced. Such improvement in toughness may be attributed to the pre-stress of the concrete matrix and the confinement effect of the SFs due to the expansion of the concrete and the restraint of the SFs against such expansion.


2020 ◽  
Vol 35 (23-24) ◽  
pp. 3157-3169
Author(s):  
Qingyuan Xu ◽  
Shuguang Li ◽  
Runsheng Hu ◽  
Mengmeng Liu ◽  
Dong Wang ◽  
...  

Abstract


Author(s):  
Farid Triawan ◽  
Geraldy Cahya Denatra ◽  
Djati Wibowo Djamari

The study of a thin-walled column structure has gained much attention due to its potential in many engineering applications, such as the crash box of a car. A thin-walled square column usually exhibits high initial peak force, which may become very dangerous to the driver or passenger. To address this issue, introducing some shape patterns, e.g., origami folding pattern, to the column may become a solution. The present work investigates the compressive properties and behavior of a square box column structure which adopts the Miura origami folding pattern. Several test pieces of single-cell Miura origami column with varying folding angle and layer height are fabricated by a 3D printer. The filament is made of Polylactic Acid (PLA), which is a brittle material. Then, compression tests are carried out to understand its compressive mechanical properties and behavior. The results show that introducing a Miura origami pattern to form a thin-walled square column can dramatically lower down the initial peak stress by 96.82% and, at the same time, increase its ductility, which eventually improves the energy absorption capacity by 61.68% despite the brittle fracture behavior.


2021 ◽  
Vol 162 ◽  
pp. 107549
Author(s):  
Weichao Yang ◽  
Xufeng Zhang ◽  
Bing Pan ◽  
Bin Ding ◽  
Binjun Fei ◽  
...  

2021 ◽  
Author(s):  
Thong M. Pham ◽  
Neil Renaud ◽  
Voon‐Loong Pang ◽  
Feng Shi ◽  
Hong Hao ◽  
...  

2021 ◽  
Vol 118 ◽  
pp. 103933
Author(s):  
Xihong Zhang ◽  
Yu-wen Chiu ◽  
Hong Hao ◽  
Jian Cui

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