Penetrating sealants show great promise for protecting concrete from the negative impacts of deicing salts.
Many sealers are available on the market, each with different chemical compositions and performance attributes.
The challenge for Iowa’s city and county engineers is selecting the appropriate sealer.
Iowa DOT funded laboratory and field testing to better understand how to select the right sealant for each application and to determine the best way to evaluate the sealer’s effectiveness.
As a result of this research, engineers have a better understanding of which types of sealers are formulated to address common durability problems.
They also have a set of recommendations on the best tests for assessing key categories of sealers. Additional field testing is underway to assess the long-term impacts of sealers on concrete joints.
Learn more about this project in Iowa DOT’s new research brief, and check out other Iowa DOT research efforts on the News & Publications page.
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