Testing pH of Concrete

April 29, 2007
Publication: Concrete International, ACI v 29 n 4 p 78-83
Author(s): Jennifer Grubb Limaye H.S. Kakade A.M.

Abstract: Although concrete typically begins its life at a highly basic pH of about 13, the pH values at exposed surfaces soon fall as reactions occur between carbon dioxide from the atmosphere and alkalis in the concrete- a process known as carbonation. Over time, fronts of carbonated concrete, with pH values of about 8.5, advance below exposed surfaces.

Keywords: Concrete