Cementitious
Grouting Services
High-quality cementitious grouting for strong structural support and waterproofing across Sri Lanka. Reliable non-shrink grout solutions for machinery base plates, post-tensioning ducts, precast joints, anchor bolts and structural gap filling — used on government and landmark projects island-wide.
High-Quality Cementitious Grouting
for Strong Structural Support
Find high-quality cementitious grouting for your construction projects in Sri Lanka at WaterProofing.lk. We provide reliable solutions for strong structural support and waterproofing — using premium non-shrink cementitious grout systems proven on government, commercial and infrastructure projects across the island.
Cementitious grout is a cement-based material mixed to a flowable or trowellable consistency — used to fill spaces, gaps and voids in structures where a strong, stable and dimensionally accurate fill is required. Unlike ordinary mortar, quality cementitious grout is engineered to be non-shrink — it expands slightly on curing to maintain full contact with the surrounding structure, ensuring a complete load transfer path with no voids.
We supply and apply a full range of cementitious grout systems — from free-flowing pre-bagged non-shrink grouts for precision base plate applications to cementitious waterproofing slurries for tanking and damp proofing. All systems are selected to meet the specific strength, flow and performance requirements of each application.
Three Core Cementitious
Grouting Systems
The Critical Importance
of Non-Shrink Grout
Ordinary mortar shrinks as it cures — pulling away from the surfaces it contacts and creating micro-gaps that prevent full load transfer. In structural applications like machinery base plates, this can cause uneven loading, vibration and premature failure of both the machine and the structure below it.
Non-shrink cementitious grout is specifically formulated to undergo a controlled, slight positive expansion during curing — maintaining intimate contact with both the base plate above and the concrete foundation below. This ensures 100% contact area, full and uniform load distribution, and no voids where water can accumulate and cause corrosion.
- Eliminates voids and air pockets beneath base plates and bearing pads
- Ensures full, uniform load transfer from equipment to foundation
- Prevents vibration-induced loosening of base plate connections
- Resists washout — maintains integrity in wet or damp conditions
- Rapid strength gain — heavy equipment can be commissioned faster
- Sulphate resistant — suitable for aggressive ground conditions
Where Cementitious Grouting
Is Used
How Cementitious Grouting
Is Done — Step by Step
Post-Tensioning Duct
Grouting — Why It Matters
Post-tensioned (PT) concrete structures — including bridges, multi-storey car parks, long-span floor slabs and prestressed beams — require the PT ducts to be fully grouted after the tendons are stressed. This protects the high-strength prestressing steel from corrosion and ensures structural continuity of the system.
Incomplete or voided duct grouting is one of the most critical structural defects in PT structures — leaving tendons vulnerable to corrosion, water and chloride attack that can lead to sudden and catastrophic tendon failure. Our specialist PT duct grouting uses fine, pumpable cementitious grout injected under controlled pressure to ensure 100% duct filling with no voids.
- Fine particle size grout — penetrates full duct length without blockage
- Injection under controlled pressure — verifies duct is fully filled
- Non-bleed formulation — no water separation during curing
- High alkalinity — passivates prestressing steel against corrosion
- Suitable for single-strand and multi-strand PT systems
- Compliant with BS EN 447 and ASTM C939 grout standards
Cementitious vs Epoxy Grout —
Choosing the Right System
| Criteria | 🏗️ Cementitious Grout | 🔵 Epoxy Grout |
|---|---|---|
| Compressive strength | 50–80 MPa | 80–120 MPa |
| Chemical resistance | Moderate | Excellent |
| Cost | ✓ Lower cost | Higher cost |
| Gap thickness | 10mm – 100mm+ | 5mm – 50mm |
| Temperature resistance | Excellent | Limited (softens >60°C) |
| Creep under load | Negligible | Some at elevated temp |
| Best for | Most structural apps, PT ducts | Chemical exposure, thin gaps |
More Grouting &
Injection Solutions
Cementitious Grouting FAQs
Need Cementitious Grouting?
Our specialist will assess your application and specify the right grout system — free site visit, transparent quote, no obligation.