Shotcrete plays a crucial role underground. It's performance, as far as ground support, can be affected by many factors. The operators on shotereting machines strive for a consistent thickness, but it's a subjective process at best. There are the site-specific parameters, such as geology and the ambient conditions underground, which affect how well the mixture adheres and cures. Then there's the ingredi-ents that noake up the shotcrete and how well they are mixed and delivered.
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