Transient viscosity of fibre-filled composites incorporating evolution of fibre orientation and concentration

2019 ◽  
Vol 59 (1) ◽  
pp. 35-46
Author(s):  
Vishak Perumal ◽  
Rahul K Gupta ◽  
Sati N Bhattacharya ◽  
Franco S Costa
2014 ◽  
Vol 5 (2) ◽  
pp. 119-125
Author(s):  
I. Kovács

The present paper of a series deals with the experimental characterisation of flexural toughness properties of structural concrete containing different volume of hooked-end steel fibre reinforcement (75 kg/m3, 150 kg/m3). Third-point flexural tests were carried out on steel fibre reinforced concrete beams having a cross-section of 80 mm × 85 mm with the span of 765 mm, hence the shear span to depth ratio was 3. Beams were sawn out of steel fibre reinforced slab elements (see Part I) in order to take into consideration the introduced privilege fibre orientation (I and II) and the position of the beam (Ba-a, Ba-b, Ba-c) before sawing (see Part I). Flexural toughness properties were determined considering different standard specifications, namely the method of the ASTM (American Standards for Testing Materials), the process of the JSCE (Japan Society of Civil Engineering), and the final proposal of Banthia and Trottier for the post cracking strength. Consequently, behaviour of steel fibre reinforced concrete was examined in bending taking into consideration different experimental parameters such as fibre content, concrete mix proportions, fibre orientation, positions of test specimens in the formwork, while experimental constants were the size of specimens, the type of fibre used and the test set-up and test arrangement.


Processes ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 191
Author(s):  
Naser Hamedi ◽  
Lars-Göran Westerberg

In the present study, the flow of a fibre suspension in a channel containing a cylinder was numerically studied for a very low Reynolds number. Further, the model was validated against previous studies by observing the flexible fibres in the shear flow. The model was employed to simulate the rigid, semi-flexible, and fully flexible fibre particle in the flow past a single cylinder. Two different fibre lengths with various flexibilities were applied in the simulations, while the initial orientation angle to the flow direction was changed between 45° ≤ θ ≤ 75°. It was shown that the influence of the fibre orientation was more significant for the larger orientation angle. The results highlighted the influence of several factors affecting the fibre particle in the flow past the cylinder.


2015 ◽  
Vol 49 (9) ◽  
pp. 3861-3877 ◽  
Author(s):  
Giedrius Žirgulis ◽  
Oldřich Švec ◽  
Elena Vidal Sarmiento ◽  
Mette Rica Geiker ◽  
Andrzej Cwirzen ◽  
...  

Author(s):  
Arnab Palit ◽  
Sunil K. Bhudia ◽  
Theodoros N. Arvanitis ◽  
Victoria Sherwood ◽  
Sarah Wayte ◽  
...  
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document