Binders only worsen the problem the beams move vibrate, and the Shock waves cause friction at all interfaces.
The shock waves actually break the binders apart and as they fracture they create even more fiction along the surface than the particles moving individually.
Fluids however tend to reduce the friction but lead to other problems, Binders are practically useless against the intense shock waves generated in the impacts.
It is just not a good environment for he survival of thermite or thermate. One spark of one aluminum particle with one particle of iron oxide and the whole charge goes up.
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Placing thermite in the column would be the dumbest move, I can think of Max that is were the shock waves would be strongest.
Why not just add a small amount of nano thermite compound to the insulation same effect and once the temperature of the fires reached a certain level the small pieces of aluminum would ignite destroying the insulation.
Or just add freaking air Bubbles under the insulation by injecting air into it, the expansion of the air bubbles would remove the insulation damaging the structure, just as Nist's fire proofing model suggests.
Any thing that compromises the buildings insulation brings the buildings down even with less damage to the core than Nist predicts there is simply to much gravitational PE. Once it gains momentum downward there is no way of stopping it.
I have thought of Hundreds of ways I could have done it, and tested each for merit on how it could have been done.
The easy simplest ways are more likely to work without raising suspicions and getting caught.
PS. my services are available to the New World Order for a price to design and engineer a perfect false flag operation for next time that will not be as complicated as 9/11/2001 and will be even less likely to be detected.
All I ask for compensation is my own little independent country, 30 trillion in gold and a never ending life time supply of young sports Illustrated swim suit models to date.
I guarantee a perfect, simple, undetectable Job, just for that little bit of compensation.