Do synthetic fibers reduce plastic shrinkage of concrete? Are there any scientific theories about this?

More Waldemar Łasica's questions See All

Can two types of cement be used simultaneously in one recipe for concrete composition?

Can two types of cement be used simultaneously in one recipe for concrete composition? (The first is cement as a binder and the second as sealing the graining structure).

20 September 2020 9,715 17 View

Does it make sense to add 12 mm long polymer fibers to a concrete mix with a maximum grain size of 8/16 mm?

Does it make sense to add 12 mm long polymer fibers to a concrete mix with a maximum grain size of 8/16 mm? (length of fiber anchorage in the concrete mix).

20 September 2020 5,173 2 View

Does the amount of shrinkage stress in concrete depend on the type of aggregate used? Is it only on the type of cement ?

19 August 2020 7,419 17 View

What happens if the amount of water used in the concrete mix is below the stoichiometric level ?

19 August 2020 9,334 3 View

What is the stoichiometric water level in a concrete mix?

19 August 2020 6,921 3 View

Does it make sense to design a concrete mix where the amount of water is equal to the amount of stoichiometric water ?

19 August 2020 2,871 3 View

Do you know the results of research, scientific articles or scientific theories on the adhesion of steel and synthetic fibers to the cement matrix?

14 August 2020 5,983 4 View

Is it a good solution to use long steel fibers (50 and 60 mm) in self-compacting concrete mixtures?

Steel fibers can block the flow of concrete mix between the rebars. Is it a good solution to use long steel fibers (50 and 60 mm) in self-compacting concrete mixtures?

13 August 2020 596 9 View

Do you know of mineral or synthetic additives that influence the deaeration and form a tight structure of the concrete mix?

11 August 2020 4,970 3 View

Do you know the chemical admixtures that affect the deaeration and form a tight structure of the concrete mix?

11 August 2020 508 3 View

What is the procedure to determine the permeability of concrete?

can anyone help me in this, it will help me with my research work

01 March 2021 834 3 View

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

Glass fiber content in a gypsum board ?

Any idea on how to get the volumic ratio of glass fiber in a gypsum board ? Thank you for your help !

01 March 2021 2,501 3 View

Apart from Nanosilica and CNT's what are the other nanomaterials readily available to use in concrete mixture?

Nanotechnology in concrete materials

01 March 2021 3,379 3 View

Concrete compressive strength databases?

I am looking for datasets similar to this one: http://archive.ics.uci.edu/ml/datasets/Concrete+Compressive+Strength I am looking for concretes with different types of aggregates (Recycled,...

27 February 2021 6,801 3 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

What is the best way to calculate the angles of twist for concrete columns subjected to torsional moment using finite element software?

In Finite element software like ANSYS , there is difficulty in obtaining direct results of twisting of concrete members because SOLID65 which is the unique element designed to represent concrete...

26 February 2021 3,806 2 View

Compute for the total volume of concrete needed for the concrete pouring of the foundation including its column up to NGL only as shown in the plan?

Looking for the quantity of cement, sand, and gravel of footings and columns. Thank you!

25 February 2021 3,092 2 View

How can we limit artifacts caused by rotation in fiber photometry?

We are trying to run fiber photometry experiments for long time scales, but we get these sinusoidal artifacts that come up. We think they may be caused by twisting of the fiber optic subject...

25 February 2021 568 1 View

Steps to calculate activation energy by coats & redfern method?

I'm a chemistry student and I'm researching the kinetic degradation of mixed plastic waste. I'm having trouble calculating the activation energy by the coats & Redfern method. The data that...

24 February 2021 974 1 View

Abdelkader BOUAZIZ

Dear Waldemar Łasica, the following documents deal with this phenomenon. My Regards

https://doi.org/10.1016/j.ijsbe.2016.05.007

https://www.researchgate.net/publication/287950069_Application_of_Different_Fibers_to_Reduce_Plastic_Shrinkage_Cracking_of_Concrete

https://link.springer.com/chapter/10.1007/978-94-007-4566-7_62

https://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392010000200004&lng=en&nrm=iso&tlng=en

https://doi.org/10.1016/j.cemconcomp.2008.09.003

https://www.concrete.org/publications/internationalconcreteabstractsportal.aspx?m=details&i=894

https://www.concretetrends.co.za/news/reducing-plastic-shrinkage-cracking-using-micro-fibres/

H. J. Alesa

yes

Dear all, the following RG threads and the attached files cover the second part of the question concerned by theories. My Regards

https://www.researchgate.net/publication/333880951_Plastic_Shrinkage_Cracking_in_Concrete_Mitigation_and_Modelling

https://www.researchgate.net/publication/44796134_Plastic_Shrinkage_Cracking_of_Concrete