Method · Repair & strengthening
Grout poured or pumped into large voids under machine baseplates, at precast joints and in columns and beams. Non-shrink grout, cured as directed, does not shrink and bonds tightly.
Grout poured or pumped into large voids — under machine baseplates, at joints between precast blocks, in columns and beams — using formwork or pressure.
Large voids in a column, beam or machine base.
Non-shrink grout does not shrink when mixed and cured as directed; epoxy grout is high-strength and resists chemicals and vibration.
For cementitious grout the concrete is soaked first, and standing water is removed before the pour.
Formwork closes the void so the grout stays where it is poured.
Poured in, or pumped under pressure, to fill the void completely; then left to cure before it takes load.
Under machine baseplates the grout carries the machine, so the base is loaded only after curing.
This is one example. We decide the actual work after seeing the site.
We find the cause — corrosion, movement, leakage or overload — and pick the method for it.
We find the cause first, then pick the method for it — not just "cover it up".
| Method | What it does | Symptom |
|---|---|---|
| Patching — Surface Repair | Hand-fill chipped/spalled areas. No formwork; about 30–50 mm per layer by product (less overhead). Polymer-modified repair mortar. | Chipped / spalled surface |
| Grouting — Filling Voidsthis page | Pour or pump into large voids in columns, beams, machine bases (formwork / pressure). Non-shrink grout (no shrink when cured as directed, tight bond) ・ Epoxy grout (high strength, resists chemicals and vibration). | Large void in a column, beam or machine base |
| Crack Injection — Epoxy or PU resin | Epoxy resin restores strength in dry cracks ・ wetter cracks take flexible PU resin, which seals but does not restore strength. | Structural crack — restore strength |
| Crack Injection — Stop leaks: PU Foam | Foams on contact with water and stops it fast. | Crack that leaks water |
| Crack Injection — Stop leaks: Hydrogel | Swells into a soft, flexible gel — for leaks at joints that move a little. | Leak at a moving joint |
| CFRP Strengthening | Not repair — the goal is to increase the load a structure can carry (e.g. raise a floor's load capacity). 3 forms: Fabric/Wrap ・ Plate/Laminate ・ Rod/Bar. Requires structural-engineer design (ACI 440.2); damaged concrete is repaired first. | Need to carry more load |
Also with this method:Cardinal Health · MEA Khlong Toei
The volume of the voids, how many places, the formwork needed and whether the grout must be pumped. Send drawings and photos on LINE.
Non-shrink grout does not shrink when mixed and cured as directed, and bonds tightly. Epoxy grout is high-strength, resists chemicals and vibration, and goes on dry concrete.
Under a baseplate the grout carries the machine, so it is loaded only after the grout has cured.
Send photos of the crack or damage and where it is. We diagnose the cause and propose the method.
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