Voids, cracks and gaps
Concrete, reinforced concrete, masonry and stone within the thickness range stated in the TDS. Grain size and gap accessibility limit the ability to inject.
MINERAL VOID FILLING
InjectGrout 4035
Fine-grained injection mortar for filling gaps and voids in concrete, masonry and stone, including water-filled spaces — with flow under control.
| Product / preparation | Dry mortar + 3 l of water (±4%) per 15 kg |
|---|---|
| Filling thickness range | From 0.6 mm to 10 cm |
| Grain size | Up to 0.150 mm |
| Dry mix consumption | Approximately 1.45 kg per 1 l of fresh mortar |
| Working time at 20°C | 30 min |
| Application temperature | Material, ambient and substrate temperature +5 to +30°C |
| Delivery method | Injection mortar pump; manual, mechanical or gravity application possible |
Technical data
Read values together with the temperature, material state and test conditions.
| Compressive strength after 1 / 7 / 28 days | 10 / 25 / 35 MPa |
|---|---|
| Flexural strength after 1 / 7 / 28 days | 2.0 / 3.7 / 5.6 MPa |
| Shrinkage after 90 days — PN-EN 12617-4 | ≤ 0.9 mm/m |
| Pull-off adhesion after 28 days | 1.5 MPa to a concrete substrate |
| Watertightness — PN-88/B-06250 | W12 |
| Water per 15 kg of dry mix | 3 l ±4%, i.e. 2.88–3.12 l |
1,45 kg/l describes dry mix consumption per litre of mortar, not the density of the entire wet mix. Mortar results do not determine anchor or repaired element capacity. Water conditions must protect the fresh filling from flow.
- Storage and shelf life
- Dry, cool place away from sunlight; 12 months in the original, unopened packaging.
Applications and selection criteria
First establish the repair objective, substrate condition, presence of water and joint movement.
Submerged filling
The mortar has increased resistance to washout. The TDS requires no flow during injection and for 12 h afterwards, depending on the element temperature.
Anchoring and pipe stabilisation
Embedding anchors and bars in concrete or rock and stabilising pipes within the scope specified by the design. This does not replace selection of anchorage length and capacity.
Application conditions and limitations
Standing water and active flow are different conditions. Do not inject fresh mortar into an uncontrolled stream. Do not treat rigid mortar as a flexible seal for a moving joint. Protect fresh filling from drying and frost.
How the material behaves
Water-filled voids permitted; no flow during application and for 12 h afterwards, depending on temperature. Rigid filling; not intended to accommodate expansion joint movement.
1. Preparation
Dry mix + water
2. Delivery
Mortar pump or gravity application
3. Result
Mineral, rigid filling
Preparation and application
Work sequence after assessing the structure and selecting the method. Full requirements are given in the product instructions.
Prepare the zone and water conditions
Check voids, accessibility and access routes. For water-filled spaces, plan to stop the flow during delivery and curing.
Measure water and add the mix
Pour water into a clean container. Add dry mortar while mixing. For 15 kg, use 3 l ±4% of water.
Mix at low speed for 3 min
Do not substitute trowel mixing for the recommended mixing method. Match the batch to the working time and apply using equipment intended for mortar.
Monitor filling and cure
Monitor material passage and quantity. Protect the mortar from washout, frost and rapid drying. Clean tools and the system with water according to the pump instructions.
From selection to application
Choose the instructions for your task and calculate material quantities using clearly defined assumptions.
Product documentation
Data, application instructions and safety documents for the supplied material.
Preparing for safe work
Before use, read the current documentation for all supplied components. Select protective equipment, ventilation and cleaning methods appropriate to the material and equipment.
Discuss your project conditions
Prepare a description of the substrate, water, geometry and expected result. Let us select the material and delivery method.