yellow/brown core formation in clinker

SBL:

please send me article on this problem

SBL, if you do a forum search for "brown cores" or "egg yolk" you will find that there are already discussions on this subject in the following posts;-

http://www.cemnet.com/cs/forums/post/2598.aspx

http://www.cemnet.com/cs/forums/post/2601.aspx 

http://www.cemnet.com/cs/forums/post/2973.aspx

http://www.cemnet.com/cs/forums/post/2605.aspx

http://www.cemnet.com/cs/forums/post/2599.aspx

The subject is also referenced in "Lea's Chemistry of Cement and Concrete" which can be found here (in Google books);-

http://tinyurl.com/ybq5l2g

Best regards,

Ted