CMB Shotcrete
CMB Shotcrete
CMB Shotcrete is a high performance, concentrated liquid set accelerator specifically engineered for dry and wet mix shotcrete applications.
Technical Property | Official Certified Value | Engineering Benefit |
Classification | High-Performance Liquid Shotcrete Accelerator | Delivers rapid structural stabilization and fast setting properties |
Setting Reaction | Instantaneous Chemical Acceleration | Allows deep nominal thickness profiling on vertical and overhead surfaces |
Rebound Mitigation | Extreme Water/Material Rebound Reduction | Decreases total site material waste and optimizes chemical costs |
Strength Development | High Early Compressive Strength Evolution | Speeds up excavation cycles and provides immediate structural safety |
System Compatibility | Optimized for Wet & Dry Blended Shotcrete Systems | Offers ultimate operational flexibility across various dynamic spray machinery |
CMB Shotcrete
Ultra-Rapid Setting Profile: Drastically shortens both initial and final setting windows, preventing newly sprayed mixes from sliding down or peeling off.
Advanced Rebound Control: Ensures absolute mechanical stickiness upon high-velocity impact, trapping large aggregates securely within the matrix.
High Early Load-Bearing Capacity: Generates significant early-hour compressive strength curves, crucial for dynamic tunneling and rock-face shoring safety.
Chloride-Free Steel Protection: Formulated entirely without hazardous elements, eliminating any oxidation risk for dynamic steel wire meshes or anchors.
Dense Structural Impermeability: Packs micro-particles closely during impact, producing a dense concrete shell that actively blocks water and subsoil moisture for 2026 specs.
Immediate structural shoring and rock-mass stabilization during tunnel boring, mining, and subway shaft excavations.
Slope stabilization, landslide protection, and rock-face securing along mountainous highway networks.
Protective lining for irrigation canals, stormwater drainage channels, and artificial reservoirs requiring swift concrete cladding.
Large-scale structural restoration, repairing defective bridge soffits, piers, and heavy industrial concrete panels.
Fast structural sealing of retaining shoring walls, deep foundation basements, and maritime coastal assets in Egypt.
Surface Preparation: Substrates must be clean, physically sound, and cleared of loose stones, dirt, and oils. Pre-washing the surface with pressurized water or air jets is highly recommended to guarantee reliable bonding.
Dosage Calibration: Standard operational dosage typically varies between 3% to 7% by weight of cement. The precise percentage must be adjusted based on localized ambient temperatures, cement types, and the required setting speed.
Injection & Spraying Protocol: The liquid accelerator must be metered continuously using a specialized dosing pump and introduced directly at the air/slurry spray nozzle to ensure uniform blending just before surface impact.
Safety & Curing Control: Application crews must wear appropriate personal protective equipment (PPE), including face masks, safety goggles, and heavy-duty suits. Once the shotcrete achieves full final set, execute standard moist curing or apply approved curing membranes to optimize long-term strength.
