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October 2014 Blog Posts (1)

IT IS TIME TO SEPARATE PLASTER FACT FROM FICTION, AND REALITY FROM THEORY Part 1

FACT and REALITY

Longstanding cement and concrete science has established that calcium chloride-in acceptable quantities-is a primary cause of discoloration in cementitious surfaces, particularly when steel troweled. Further, the Portland Cement Association research performed in 1966 described that when the ratio of cement alkalis to chlorides was low, a light spotting discoloration on a darker background resulted. The white cement used in swimming pool surfaces is a…

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Added by Douglas Latta on October 9, 2014 at 9:51am — No Comments

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