1) Your Challenges on Active Runways

• Time window is short. Night or off‑peak closures leave only a few hours; every extra minute increases diversion and delay costs.

• High loads & dynamics. Landing and braking zones demand early strength, impact resistance, and fatigue performance.

• Moisture, fuel, and chemicals. Concrete faces jet fuel drips, de‑icers, UV, and frequent washing—repairs must be impermeable and chemically robust.

• Hidden voids. Pumping, erosion or consolidation can create sub‑base voids, leading to rocking slabs and reflective cracking.

• Joints deteriorate first. Open or raveled joints admit water and FOD risks; fast, flexible resealing is essential.

2) ZRETE System Approach (Pick by Scenario)

A. Rapid Full‑Depth or Partial‑Depth Patching — Reopen Same Shift

• Material: Rapid‑Setting Concrete high‑early‑strength formulation.

• Why it works: Flowable placement, fast strength gain for early traffic opening, shrinkage‑compensated to prevent edge debonding, durable in wet/cold.

• Typical result: Saw‑cut & removal → patch placement → reopen in ~2 hours (subject to field temps and section size).

B. Expansion Joint Rehabilitation — Ride Quality + Waterproofing

• Materials: Rapid‑Setting Concrete for shoulder/joint nosing rebuild; MS12A Silane‑Modified Joint Sealant for flexible, fuel‑resistant sealing.

• Why it works: Hard nosing resists impact; elastic sealant maintains watertightness under thermal movement and vibration.

C. Sub‑Base Void Filling / Slab Stabilization — Stop Rocking & Faulting

• Material: Two‑Component Polyurethane Injection Grout.

• Why it works: Low‑viscosity, expanding resin travels and fills voids under slabs, restores support, minimizes future pumping and corner breaks.

D. Durability Upgrade — Make Repairs Last Longer

• Materials: Silane Impregnating Agent (penetrating water‑repellent) and/or Water‑Based Capillary Inorganic Waterproofer (pore‑blocking).

• Why it works: Deep hydrophobization + capillary blocking reduce water & chloride ingress, slowing freeze‑thaw and rebar corrosion, cutting lifetime costs.

Airports demand repair systems that combine speed, structural integrity, and durability under extreme loads and environmental conditions. Below we describe core solution components, the challenges they address, and how our products perform: