2025
Puno, Peru
San Rafael Mine is a tin mining operation located in the Antauta district, Melgar Province, Puno Region, Peru, at an altitude of 4,500 meters above sea level, with its highest point reaching over 5,000 meters. San Rafael is the third-largest tin producer in the world, currently supplying 12% of the global tin production.
Project Requirements
The mine requires measures to minimize the risks of rock detachment and, at the same time, improve mineral production through the use of structural support with wet-mix shotcrete.
Sika Solutions
To address this requirement, Sika and Robocon conducted from 2018 to 2020 preliminary work on shotcrete mix designs to enhance support, using the most suitable products for high-performance shotcrete.
Products Used
Sika® ViscoCrete® SC-50
High-performance superplasticizer and workability retainer for shotcrete
Sigunit® L-60 Plus
An accelerator for dry- and wet-mix shotcrete, designed for tunnel and slope support applications
SikaFiber® CHO-65/35 NB
High-quality, drawn steel fibers for reinforcement in traditional and shotcrete concrete
SikaFiber® Force-60
Synthetic macro fiber for structural use in shotcrete and conventional concrete
Project Participants
Robocon Servicios S.A.C.
