Dear Michael, Why  you are not considering coal ash. Denominator will have wt % ash absorption.   Regards,   Gulam Dastgir

Dear All,  I am also in search of cement standards prevailing in different countries. Can any one also help me.   Regatds,   Gulam Dastgir

Dear Ted, That's ok. What i am really interested in is that why it is transition zone. Why is it called transition zone. there would be something behind this terminology.   Regards, Gulam Dastgir  

Dear All, Burning zone and calcining zones are literally clear. But what about transition zone. What is " transition" here. Moreover, what is basic difference between lower and upper transition zone.   Kind Regards, Gulam Dastgir            

Dear Clark, Can you brief how the term " Ordinary" came into vogue.   regards, Gulam Dastgir

Dear All, I want to know a brief history behind the use of word " Ordinary " in many cement standard. If we compare indian standard for OPC cements like IS:269, IS : 8112 and  IS : 12269with chinese standards like GB175 : 1999 , then we find that what chinese sell as OPC is indian PPC. Moreover EN standards never use word ...

Dear Vikpro, I like to enquire why Free CaO will increase when using fine raw meal. Regards, Gulam Dastgir

Dear Azhar, Yes. That seems logical   Regards,   Gulam Dastgir

Dear Azhar, I am sorry, but i don't get what you to clarify? What i know is that K2SO4 generally does not circulate up to smoke chamber as the case is with alkali chlorides and Na2SO4. Contrary to this, the K2SO4 in smoke chamber is abnormally on higher side. This is what I am confused about.   Kind Regards, Gulam ...

Dear Azhar, In the storage yard your clinker getting hydrolysed, leaving a white layer of Calcium hydroxide on the surface. This happens when clinker is stored for prolonged time in open storage yard. Hydration of C3S and C2S , along with free lime bound to decrease your compressive strength. Though the hydration of free lime may reduce ...