Foundation Crack Injection Case Study

HMI® proposed Soil Link™ Acrylate Grout Injection, an ideal solution for sealing hairline cracks in below-grade structures. The acrylate grout’s low viscosity allowed it to penetrate deep into the crack, ensuring a watertight seal. The project followed a precise six-step injection process:

1. Drilling: Small-diameter holes were strategically drilled along the crack to intercept it and allow injection points.
2. Injection Port Installation & Water Testing: Ports were installed at drilled points and tested with water to confirm crack interception and flow paths.
3. Indicator Ports & Epoxy Sealing: Additional indicator ports were set up to monitor the grout’s travel, and the surface of the crack was sealed with epoxy to contain the injection.
4. Mixing & Testing: The acrylate grout components were mixed, and small test batches were used to confirm reaction times and ensure optimal gel formation.
5. Injection & Solidification: Using an easy-to-use pump, the grout was injected with water, filling the entire crack from bottom to top, penetrating tight spaces, and forming a flexible, watertight seal.
6. Port Removal & Patching: Once the grout was fully cured, the ports were removed, and the drilled holes were patched for a clean, finished appearance.