Miragememories said:
"I fail to see how mixing nano-thermite with concrete dust will alter its ignition temperature?"
GlennB said:
"It doesn't, it affects its ability to maintain self-sustaining combustion...."
As long as there remains a source of unspent nano-thermite and an exposure to ambient temperatures of 430 C or greater, the thermitic material will continue igniting.
GlennB said:
"Even if - and we've seen zero evidence thus far - nano/super thermite actually does have a lower ignition temperature than regular thermite, having it mixed 1:20 with concrete dust will negate any benefit of the lower ignition point. It will probably go out. Even if it doesn't then most of the heat generated by the 5% thermite will go towards heating the concrete dust.
It cannot preferentially heat any steel in its vicinity, over the long periods of time we're discussing. The concrete dust - by your own definition - is much more adjacent and finely-divided than the steel."
Well you have seen no evidence because you are sitting in a chair looking at a computer monitor.
On the other hand, scientists with the proper tools and access to WTC dust have obtained the necessary evidence.
It does not matter what ratio you mix nano-thermite to concrete dust, it will still ignite when exposed to an ambient temperature of 430 C or greater.
The ignition will create heat.
The dust was not pure concrete.
It was a mix containing the pulverized remains of the buildings it once represented.
The fact that nano-thermite should absolutely not have existed in the WTC dust in any amount, but did, clearly indicates that its existence was purposeful and therefore existing in quantities sufficient to achieve said purpose.
Given that its logical purpose was to cause the failure of the WTC 1, 2 and 7 supporting columns, it is reasonable to assume that the successfully observed collapse of those structures caused an indeterminate amount of this thermitic material to suffer a disrupted ignition and thus get pulverized as dust in the ensuing collapse.
The debris pile below said collapse should contain the highest concentrations of this unspent thermitic material.
Hotspots deep in the debris pile would provide a steady source of ignition heat for this thermitic dust as it was continually disturbed during the months of debris excavation.
If the temperatures in these hotspots achieved steel melting levels, than the steel would melt.
Now if you think there is another reason why we had months of metal melting heat in that smothering pile of dust
Glenn, I'd be interested in hearing it?
MM