After testing nano concrete with anc particles, i found that, by increasing the period of heat effect compressive strength increased, how come?
Anc means active nano clay
its a clay but heated up to 750o c to be active
thank you very much
As we know the cause of comp. strength development is "disjoining effect" in hardened cemetitious materials up to 200-300 oC, the increase could have been resulted by the effect in your concretes with nanoclay. Moreover, because the clays have more expansion and shrinkage capasity with temperature and moisture content, the strength increase effect can be more pronounced. Of course this is my idea. I don't have any proof.
i think this behavior due to pozzolanic-effect and reactivation of nano clay due to elevated temperature. thank you for your response
pozzolanic reaction is an expected result. Moreover, developed C-S-H gel productions that have lower C/S ratio than ordinary C-S-H could have been formed in some condition (avaible siliceous material and at certain temperatures) such as tobermorite like structure and xonotlite
the results obtained unexpected at all and now i try to solve this issue
Article An Overview on the Laboratory Investigation of Using Nano-Ma...
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