Experimental results are very important for validating a shear model. In many papers, results of shear tests are often presented with reduced information, for example, only reinforcement ratio is given and the diameter of reinforcing bar is missing. Detailed information regarding experimental work may be very useful for researchers, who have different ideas or approaches from existing shear models and the detailed experimental results can also support for the new models taking into account the influencing parameters in more details.
I create a shear database for reinforced concrete members with and without shear reinforcement with collection of following information (as much as possible):
- Concrete type: such as normal concrete (NC), ultra-high performance concrete (UHPC), low strength concrete, pore concrete, reclycled concrete,...
- Concrete properties: fc, fct, Ec, GF, ag. Also information about the sample size for concrete strength test (e.g. cylinder/cubic sample size), the scatter of concrete properties (not only the mean values but also the variation coefficient), creep/shrinkage coefficient,
- Reinforcement properties: E, fi (diameter of reinforcing bar), reinforcement ratio (also in compression zone)
- Geometries (a, b, d, h, c)
- Load type, load distribution (concentrated load, distributed load, pretension/prestressing load).
- Crack spacing (sr)
- Failure position
- Shear strength (by big development of deformation - normally related to Vcr, and by maximal load)
I would be very happy if you know the literatures (paper, dissertation thesis) and share me the research results regarding experimental works to extend the shear database, which will be published somehow. At the moment I have following numbers of sample in some groups with relative detailed information of tests:
- recycled aggregate concrete: 131
- lightweight aggregate concrete: 49
- normal concrete + prestressed load: 113
- steel fibre-reinforced concrete: 60
- normal concrete + FRP reinforcement: 207
- distributed load + normal concrete: 16
- distributed load + normal concrete + prestressed load: 12
Thank you for your help and collaboration!
Best regards,
Ngoc Linh Tran
Check the following reference Please.. it might's assist you in your question … Regards…
Article Shear Design of Concrete Members without Shear Reinforcement...
Dear Ngoc Linh Tran
See this article
https://www.researchgate.net/publication/326315577_Influence_of_Steel_Fiber_on_the_Shear_Strength_of_a_Concrete_Beam
Dear Hussam Ali Mohammed,
thank you for the paper. The shear tests carried out by Prof. Rombach and colleagues Kohl and Vu from TU Hamburg are included in the database. The experimental program is very interesting, in which the effect of changing depth of beam is studied.
Best regards,
Ngoc Linh Tran
Dear Mohannad Husain Al-Sherrawi,
thanks for the paper. A message regarding the experimental results has also been sent to you.
Best regards
There is a shear test on bamboo reinforced concrete beams without shear reinforcement (4 beams). The result is comparable to that of steel reinforced concrete members. The existing models work relatively well in this case. Unfortunately, the description of material properties is not very clearly.
Article A Comparative study of bamboo reinforced concrete beams usin...
Such experiment results are very interesting for validating a shear model.
A very interesting experimental program for one-way RC slab made of two different concretes is presented in the following paper of Yang et al. (2013).
Article Influence of Spatial Variability on the Shear Capacity of RC...
The shear capacities are a little larger than expected when comparing with the predictions of existing shear models. However, it makes sense in this case.
A good shear model should also be applicable for this case of masonry structure. Very interesting experimental results for masonry beams in shear can be seen in the following paper:
Conference Paper The Size Effect in Reinforced Masonry
In this case, the shear model according to SMCFT (proposed by Bentz et al. (2006)) and also the model of Muttoni (2003) show a stronger size effect than the experimental results.
@ Eva Lantsoght: I am also interested in shear databases of members made of different concrete and reinforcement. The ACI-DAfStb database is very useful, however only for normal and lightweight concrete.
That's true, but the committee may be interested in new databases that you develop.
@ Eva Lantsoght: I just collect the data of shear tests as a hobby, independent from the ACI-DAfStb group. It is time-demanding job, so let's wait until I have a large enough database.
Here is a very interesting experimental program of Juan (2011) for lightweight concrete beams in shear. It includes 30 slender beams without shear reinforcement.
https://core.ac.uk/download/pdf/48649291.pdf
Beside the concrete compressive strength, the tensile strength and elastic modulus of concrete are also experimentally determined.
If existing shear models such as fib Model Code 2010, Muttoni (2003) and new proposed EC2 are not modified, they show a strong overestimation of shear strength.
Dear Ngoc Linh Tran ,
Please check this paper:
http://jestec.taylors.edu.my/Vol%2011%20issue%204%20April%202016/Volume%20(11)%20Issue%20(4)%20548-562.pdf
Hope the data on the paper can contribute to your database.
Regards,
Rendy
@Rendy Thamrin: experimental results of your beams are now in the database. Thanks.
Dear prof. Tran,
I just recently saw your post and I'm interested about the recycled aggregate concrete database. We have a paper where we compiled one and tested Eurocode 2 predictions (sending it attached). Would you be interested to compare the results?
Also, did you use the Reineck et al. database for normal concrete? It has several hundred results.
Kind regards,
Nikola
@Nikola Tosic: thanks for sharing your paper. I also have the database for NC created by Reineck et al.
At the moment there are 131 RAC beams without shear reinforcement in my shear test database. Compared to NC beams, RAC beams exhibit little smaller shear strength. This strongly depends on the amount of RA in concrete and the quality of RA. In some RAC beams, the reduction of shear strength can be 20%.
Best regards,
Ngoc Linh Tran
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