www.concreteproducts.com January 2018 • 67
INNOVATIONS REPORT
GCP TYTRO SYSTEM
Shown here in an early field application, the Tytro Shotcrete System offers these GCP-cited benefits against silica fume alternatives: high
dosage efficiency; enhanced sprayability and improved cohesion; waste minimization through lower rebound and dust; reduced cycle times
owing to greater layer thickness attained in a single pass; accelerated strength development; lower permeability and higher water penetra-
tion resistance; handling ease and safety; more consistent quality; and, storage efficiency in the absence of silo requirements.
achieved through mix optimization, waste minimization and shorter
cycle times; and, affords faster construction area re-entry times due
to more rapid early age strength development at equal accelerator
dosage rate.
Joining RC in the Tytro Shotcrete System are GCP's Strux 2-in.
synthetic macro-fiber plus these companion agents: WR high-range
water reducer; HC hydration control, extending mix working life up
to 72 hours; SA, an alkali-free set accelerator formulated to provide
high early strength at low dosage rates; AE air entraining admixture;
and, RM, a rheology modifier to improve pumpability and spraying
sequences. — GCP Applied Technologies, Cambridge, Mass., www.gcpat.
com/shotcrete
PHOTO: GCP