APPLICATION OF THE ALKALI-FREE SETTING ACCELERAT OR AND SUPERPLASTICIZER FOR SHOTCRETE SUPPORT OF MINE WORKINGS

https://doi.org/10.48498/minmag.2022.212.12.003

The advisability has been studied to apply alkali-free setting accelerator and superplasticizer for shotcrete support of mine workings at the Zhomart mine. The wet process sprayed concrete technology for the mine workings has been fully developed. The maximum layer thickness of the surface has been from 10 cm to 12 cm. The steam curing has been used, and as a result, the fast-setting of the applied concrete has been observed. The test results have demonstrated that the increasing in the lifespan of concrete and doubling all strength characteristics should consequently lead to the security upgrade of production processes with stability and maintenance of the shot crete support.

*A.G. Akpanbayeva, T.K. Isabek