Can concrete dust explode ?
Can concrete dust explode ?
(OP)
Mechanical engineer requires advice with chemistry problem !!
Is it possible for fine concrete powder, any size, any concentration (generated by crushing during demolition) to ignite in dry air ?
Any info welcome.
Is it possible for fine concrete powder, any size, any concentration (generated by crushing during demolition) to ignite in dry air ?
Any info welcome.





RE: Can concrete dust explode ?
RE: Can concrete dust explode ?
I understand that the large ratio of surface area/ volume is a significant factor in dust explosions, but I presume that the molecules of the particles would have to be capable of combining with oxygen to enable combustion to start. Unfortunately, my knowledge of chemistry isn't quite up to it !!
I tried 'google' but couldn't find anything definite so, thanks for the tip; I'll contact them direct.
Regards,
Bob
RE: Can concrete dust explode ?
RE: Can concrete dust explode ?
That is very reassuring; and other sources give similar indications.
I didn't pay enough attention in chemistry lessons, so I'm glad that you guys stayed awake !
Regards,
Bob
RE: Can concrete dust explode ?
RE: Can concrete dust explode ?
That is very positive. We are trying to figure out the best way to clean a contaminated concrete surface. The work must be done remotely so the prior testing of samples would be difficult - but not impossible. Thanks for the advice,
Regards,
Bob
RE: Can concrete dust explode ?
RE: Can concrete dust explode ?
I think that I am fairly confident now. One problem with concrete is the (unknown) chemical composition of the aggregate.
If lime products are capable of killing a flame then even the ? possibility ? of a potentially flammable component is not a serious risk.
Thanks for your contribution,
Regards,
Bob