Reinforced concrete potable water structures are at higher risk for corrosion because of constant exposure to moisture. They are also limited on protection methods, because it is important not to apply dangerous substances that can leach into drinking water.
Cortec®solves this problem with its industry-leading portfolio of Migrating Corrosion Inhibitor™（MCI®）通过UL认证以符合NSF/ANSI标准61的产品，用于饮用水结构。1MCI®extends the service life of reinforced concrete structures by working its way through concrete pores and creating a protective molecular corrosion inhibiting layer at the level of the rebar. Cortec®已经开发了NSF标准61认证MCI®products for use in all phases of a structure’s life cycle.
新建筑
When constructing new potable water tanks out of reinforced concrete, engineers can specify MCI®-2005或MCI®-2005 NS水基腐蚀抑制混合物。这些混凝土混合物符合ASTM C1582的所有物理属性和腐蚀要求，对于现成混合供应商而言非常友好。与传统的亚硝酸钙混凝土混合物不同，倾向于加速设定的时间并促进更多收缩开裂，MCI®-2005 actually delays set time, which can be a side benefit for concrete workers (MCI®-2005 ns是不需要延迟的项目的普通设置版本）。MCI®-2005包含67％USDA认证的生物基础内容，是USDA BiopReperred的强制性联邦采购计划下的合格产品®程序。2It was used by a water consortium in Spain to enhance the durability of a new 1.32 million gallon (5000 m³) water buffer tank and avoid corrosion issues experienced with previous structures.
维护
MCI®-2018和MCI®-2020 provide excellent surface treatment options for existing structures that need corrosion protection with an NSF Standard 61 certified product. MCI®-2018是含有迁移腐蚀抑制剂的100％硅烷密封剂。它的双重作用抑制了钢筋水平的腐蚀，并排除水并阻止混凝土表面的氯化物侵入。MCI®-2020不是水驱动物，但它提供了额外的强剂量迁移腐蚀抑制剂，在应用后一个月内穿透了混凝土表面以下三英寸的迁移抑制剂。在发现钢筋混凝土覆盖不足之后，它被用来保护脱盐水库和圆柱。
维修
MCI®-2018和MCI®-2020 can also be used in repairs. They have been shown to mitigate preexisting corrosion in reinforced concrete when tested according to the U.S. Bureau of Reclamation M-82 Standard Protocol. Interestingly, they did so starting from a higher chloride threshold than typically required for this test, showing that they are able to reduce corrosion rates independent of chloride levels.
MCI®-2006 NS powder admixture is an excellent option for fortifying repair mortars. In addition to providing corrosion protection to rebar directly in contact with the MCI®-enhanced repair mortar, MCI®-2006 NS also has the capacity to migrate to surrounding undisturbed concrete to reduce the risk of the ring anode effect. This admixture was added to repair mortar and passivating grout when repairing a network of pipes for the same Spanish water consortium previously mentioned.
Source:http://www.cortecvci.com/