Surface coatings and sealers are a useful tool to help keep outside chemicals from penetrating into concrete. This video explains how impermeable, reactive, vapor permeable sealers work in concrete. Different categories and challenges for each type of sealer is discussed. There is an extended discussion on vapor permeable membranes and their performance. These membranes are especially beneficial for concrete because they are low cost, easy to apply, and show good performance in the field.
Field work is presented that shows the lifespan of silane coatings in Oklahoma bridges. Also, insights are given about how the coatings fail and what can be done after they stop performing.

Thanks to Hailey Goodale! She edited this video and is my Director of Awesome.

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References:
Ricky S.C.WooaHonggangZhubMichael M.K.ChowaChristopher K.Y.LeungbJang-KyoKim
Woo, R.S.C., Hongang, Z.M., Chow, M.K, Leung, C.K.Y., “Barrier Performance of Silane-Clay Nanocomposite Coatings on Concrete Structure”, Composites Science and Technology, V.68, I14, Nov 2008, pp. 2828-2836.

Khanzadeh Moradllo, M., Sudbrink, B., Ley, M.T., “Determining the Effective Service Life of Silane Treatments in Concrete Bridge Decks”, Construction Building Materials, May 2016, doi:10.1016/j.conbuildmat.2016.04.132.
Khanzadeh Moradllo, M., “USE OF NON-DESTRUCTIVE X-RAY MICROSCOPIC TECHNIQUES TO STUDY FLUID TRANSPORT IN CEMENT-BASED MATERIALS”, Dissertation, Oklahoma State University, 2016.