They can be both anodic, cathodic, or a mixture. Some work to create a protecting barrier that stabilizes the layer of rust encompassing the steel, Some others offer a skinny protective coating that forestalls chlorides from reacting With all the metal. In the situation of gypsum, it can positively hold https://concrete-admixture86183.articlesblogger.com/54991456/air-entraining-concrete-fundamentals-explained