Using ferromagnetism in reinforced concrete

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Discussion Overview

The discussion centers on the potential application of ferromagnetism in enhancing the adherence between structural steel and concrete in reinforced concrete design. Participants explore the feasibility of adding ferromagnetic particles to concrete and magnetizing the steel while the concrete is still in a liquid state.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant proposes that adding ferromagnetic particles to concrete could enhance adherence between steel and concrete, potentially increasing strength.
  • Another participant argues that magnetic forces are small compared to the structural strength of concrete and its components.
  • A follow-up response acknowledges the initial concern about magnetic forces but suggests that these forces might still play a role before the concrete hardens, potentially aiding in the convergence of materials.
  • A later reply expresses surprise at the idea but does not dismiss it outright, indicating an openness to the possibility.

Areas of Agreement / Disagreement

Participants express differing views on the significance of magnetic forces in the context of concrete and steel adherence, indicating that the discussion remains unresolved with multiple competing perspectives.

Contextual Notes

Limitations include the dependence on the assumptions about the behavior of magnetic forces in liquid concrete and the lack of empirical evidence to support the proposed idea.

Semkan
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Hey there,

I am currently majoring in civil engineering. A while ago when I was wondering about ferromagnetism an idea occurred to me:

In reinforced concrete design adherence between structural steel and concrete is a very important feature. Simply, if we could enhance the adherence, this would lead an increase in strenght.

My idea is, what if we add ferromagnetic particles to the concrete mixture and somehow magnetise the structural steel while the concrete is still in a liquid form. Is this possible? Do you think this would enhance the adherence between steel and the concrete? Or else what do you think would happen?
 
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Magnetic forces are tiny compared to the structural strength of reinforced concrete and its components.
 
mfb said:
Magnetic forces are tiny compared to the structural strength of reinforced concrete and its components.

Of course they are, when the concrete gets hardened the forces generated by magnetism would be negligable. But before the concrete gets hardened, when it's still in a liquid form wouldn't those magnetic forces help the concrete to better converge with the structural steel, ultimately increasing the adherence after the concrete gets hardened?
 
Ah, that way.
Would surprise me, but I cannot rule it out.
 

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