Abstract
The microstructure changes of acrylate spray-on waterproof material in alkaline groundwater environment were tentatively studied with X-ray microscopy (XRM), and the validity of deciding the failure of the material was explored in paper. Regarded NaOH solution with pH=12 as corrosive medium, after the immersion in the alkaline solution, spray-on waterproof material was scanned with XRM, and the structure was characterized with some indexes such as porosity and pore connectivity. The results show that when the waterproof material is immersed in alkaline solution for some time, the surface of the material becomes uneven, the overall porosity falls and the pore connectivity rises. It is feasible to study on the failure of waterproof material in underground engineering with XRM.
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