Industrial Basement Waterproofing · Minsk

What Pioneer Delivered

Not just a machine — a matched system, a trained crew on site, and after-sales backing end to end.

• On-site survey of the vault — mapping the cold joints and tie-rod penetrations that were the real leak paths and confirming the concrete could be primed damp before any spray.
• A single-source system — the JYYJ-H-V8T machine and the chemical-resistant pure polyurea matched, tuned to an 8-second gel and warranted together, not equipment and material sourced from three suppliers who blame each other.
• A spray crew trained for confined-vault vertical and overhead work and fast-gel polyurea — the hard part of waterproofing is laying an even pinhole-free film on walls, and we own it.
• Holiday-tested QA and a return-to-service plan built around $15k/day downtime — the equipment vault went back to service the same day, saving roughly $30k versus a 3-day epoxy alternative.
• Ongoing remote support for ratio, temperature and gel-time tuning, plus re-order of the exact matched chemical-resistant polyurea — so the next vault or repair is a phone call, not a new project.

Execution Process

1. 1 · Abrasive Blasting to CSP 4

   Vault floor and walls are abrasive-blasted to a CSP 4 concrete surface profile, opening the pores and removing laitance, old coatings and contamination. Cold joints and tie-rod penetrations are routed and prepared as the known leak paths.

2. 2 · Primer & Detail Setup

   A moisture-tolerant primer is applied to the blasted concrete and the routed cold joints and penetrations are detailed to anchor the membrane. The JYYJ-H-V8T is set to 36 MPa with its 10-inch PLC, gel time tuned to 8 seconds for vertical work.

3. 3 · Pure Polyurea Spray Application

   Spray 2.5 mm DFT of pure polyurea over floor and walls with the JYYJ-H-V8T at 36 MPa, the 8-second gel letting the film build on vertical surfaces without sag. The seamless monolithic membrane bridges every cold joint and tie-rod penetration.

4. 4 · Cure & Same-Day Return

   The polyurea cures to service in about 30 seconds and the membrane is holiday-tested for pinholes before the vault is signed off. With chemical resistance and over 400% elongation built in, the equipment vault is returned to service the same day.