Patent ID: 9217738
Filing Date: 2015-12-22
Classification: G01N

Abstract:
1. A method for determining the redox condition of a cured cementitious material, the method comprising: combining a sample of a cementitious material with de-aerated water to form a mixture, wherein the cementitious material includes ground granulated blast furnace slag, wherein the cementitious material includes about 20% or more by weight of the ground granulated blast furnace slag, the mixture including a liquid portion that includes the de-aerated water and a solid portion; maintaining the mixture under anaerobic conditions for a period of time of about 10 minutes or more to form a leachate; examining the leachate visually and/or by use of spectroscopy following the period of time to determine the color of the leachate, the color of the leachate being indicative of the redox condition of the cured cementitious material.