Waterproofing Options for Interbloc Structures.
This article summarises three common approaches to waterproofing an Interbloc structure.
Interbloc blocks are commonly used to construct temporary settlement tanks and permanent bunding. To ensure the waterproofing of an Interbloc structure, there are three distinct options, each catering to different levels of waterproofing requirements.
Option 1: Polyurethane Sealant
The first method involves utilising an industrial-grade polyurethane sealant during the construction of the Interbloc structure. This sealant is applied to each block, and as subsequent blocks are added, the polyurethane is compressed between them. Additionally, it is common practice to apply extra sealant to the gaps between the blocks after the structure is complete.
While this option is cost-effective and straightforward, achieving 100% waterproofing can be challenging.
Option 2: Shotcrete
The second approach is to construct the Interbloc structure and then apply a layer of shotcrete to its surface. Although this method is more expensive, it ensures complete waterproofing of the structure. An added advantage of using shotcrete is its ease of removal, facilitating deconstruction if needed in the future.
Option 3: Grout Render
The third option involves building the Interbloc structure and subsequently rendering the inside wall with a grout or plaster. Though moderately costly, this method provides a guaranteed waterproofing solution.
In summary, the choice of waterproofing method for Interbloc blocks depends on factors such as budget, the required level of waterproofing, and the potential need for deconstruction in the future. Consideration of these factors will aid in selecting the most suitable option for your specific application.
