With three powdered, alkali-free shotcrete accelerators, Sika's Sigunit® technology covers all requirements for dry shotcrete formulations and opens up new possibilities for dry mortar development. For this purpose, Sika has its own shotcrete laboratory with a spray booth at its headquarters in Zurich. There, the accelerators are improved with regard to maximum early strength and early strength, good sprayability, minimal rebound and economical dosing. The special composition also protects users and the environment, as no additional alkalis are released during processing and subsequent use.
AREAS OF APPLICATION
Repairing and reinforcing of concrete
Mountain support in underground mining
Rock and slope stabilisation
Internal formwork made of shotcrete in tunnels and galleries
Shotcrete lining of underground facilities
Drift and lining of tunnels and galleries with high-quality shotcrete
PRODUCT HIGHLIGHTS
ACCELERATOR SETTING FOR CEMENTITIOUS DRY-MIX MORTARS
Time is preciour in the constuction industry and the rapid curing of cementitious dry-mix mortars is crucial. With innovative technology, a reliable initial acceleration is achieved in just a few minutes. This not only facilitates processing, but also minimises the rebound effect and ensures rapid load absorption.
This solution is versatile and is even suitable for slightly more inert CO2-reduced special cements. Despite the accelerated setting, the final strength of the mortar is maintained, so that the quality of your structures is guaranteed.
Another advantage of this technology is that it does not cause alkalis to leach into the groundwater, which contributes to a more environmentally friendly construction method.