Injection grouting is a common method used to repair and waterproof basement RCC (Reinforced Cement Concrete) walls. It involves injecting a grout material into cracks, voids, or honeycombs in the concrete to seal them and restore structural integrity. Here’s a detailed guide on the process and benefits of injection grouting for basement RCC walls:
Types of Injection Grouts:
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Cementitious Grouts:
- Made of cement and fine aggregates.
- Suitable for filling wide cracks and large voids.
- Provides structural strength.
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Epoxy Grouts:
- Made of epoxy resins.
- Ideal for filling fine cracks.
- High bonding strength and chemical resistance.
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Polyurethane Grouts:
- Made of polyurethane resins.
- Expands upon contact with water, sealing leaks effectively.
- Flexible and can accommodate slight movements in the structure.
Steps in Injection Grouting:
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Inspection and Assessment:
- Inspect the basement walls to identify cracks, voids, or areas of water leakage.
- Determine the type of grout to be used based on the nature of the cracks and the environmental conditions.