National defense and military industry
Engineering Background
Special underground protective structures—such as underground command posts and military reserve depots—require structures with extremely high resistance to seepage, earthquake, and explosion.
Technical Challenges
The structural fissures are extremely fine, and conventional cement cannot fill them.
The environmental requirements are extremely high; the materials must be resistant to high temperatures, corrosion-resistant, and have a long service life.
Product Corresponding Features
Ultrafine particle size: Fatigue cracks with a size less than 0.05 mm can be detected;
Waterproofing performance: Permeability coefficient ≤ 10⁻¹⁰ m/s;
Physicochemical stability: Inorganic mineral system, non-volatile, corrosion-resistant, and high-temperature resistant.
Professional Processes and Parameters
Hidden deep reinforcement: Form a sealed and consolidated body within the concrete component;
Sealing and anti-seepage treatment: Enhance the overall integrity and concealment of the structure;
Recommended parameters: Grouting pressure: 5–10 MPa; water-to-cement ratio: 1.0–1.3.
Engineering benefits
Significantly enhance resistance to detonation, ensuring the facility’s long-term safe and stable operation;
Waterproofing performance: The permeability coefficient of microfractures has decreased from 10⁻⁶ cm/s to ≤10⁻¹⁰ cm/s, meeting the standards for nuclear-grade and military engineering applications.
Holistic Enhancement: The compressive strength of the protective structure is increased by 20–30%, and its impact toughness is improved by 25–40%.
Anti-knock capability: The structure maintains its integrity under simulated detonation loads of 0.5–1.0 MPa, and the failure mode transitions from brittle failure to ductile failure.
Lifecycle: The engineering maintenance cycle has been extended from major overhauls every 5–8 years to over 20 years, reducing the maintenance frequency by 60–70%.
Economic benefits: Long-term safe operation reduces the substantial replacement and protection costs associated with facility failures, with potential savings per single large military facility reaching hundreds of millions of yuan.
Business alignment target department
Military engineering planning and design departments, facility maintenance units.
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