Alkalies in pozzolans
It is well known, how alkalies from clinker influence on properties of cement and concrete (ASR etc.). Can anyone tell me about cement total alkalies influence, when with clinker are intergrinded pozzolans. Pozzolans are perlytes and amount of alkalies in perlytes is up to 7%. In that case the total amount aof alkalies in cement is about 2%. Has anyone experience with this matter.
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Re: Alkalies in pozzolans
Dear Mr Clark
I know very well what are pozzolans. Pozzolans during hydration of cement react with Ca(OH)2 (with product of reaction of calcium silicates) and form calcium hydro-silicates, so structure of cement paste hardens and durability, hydraulic and sulphur resistant properties of concrete improve.
I asked about influence of such alkalies on properties of cement&concrete (Alkali-Silica Reactions) that enters to cement compositions with pozzolans.