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What is Autogenous Healing?

April 26, 2017autogenous healing

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What is Autogenous Healing?

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Simply stated, autogenous healing is the ability of cement to heal itself. In the presence of moisture, cement extrudes calcium hydroxide which, upon exposure to the atmosphere, is converted to calcium carbonate (limestone) which seals the crack. This is the same phenomenon that happens when a broken bone is mended. Autogenous healing of cement lined pipe is common when the buried pipe is in the presence of moisture, either on the soil side or inside of the pipe itself. These cracks, when healed autogenously, are stronger than the original cement lining. Evidence of autogenous healing is a whitish substance forming along the crack line. Conclusion: Even though your pipeline has exfiltration problems, it will stop after it is cement lined!