Waterproof King
When it comes below the soil sealing, there are generally three ways to do the job:
-- Waterproof on one side blind
- Sealed on the negative side
-- Waterproof on the positive side.
We will check all the options in a concise manner. More details will can be found in other entries.
1) Below-ground blind side waterproofing.
Blind-side waterproofing is a method commonly used in new buildings that are built on the property line. In these situations it is very difficult to dig and work on the positive side. One type of sealing Blind-side waterproofing is also slabs-on-grade.
You can use many materials (eg rubber powder, PVC membranes, SBS special membranes self adhesive), but GCL - Geosynthetic clay-layers - are the absolute kings for the occasion. The ability to exploit the capacity expanding bentonite can work miracles.
Bentonite products have distinct advantages:
- Self properties curative
- Simplicity in sealing fashion
- Are easier to work on the rough wall substrates many retaining structures.
Ensure that the SCM must be limited in order to work properly.
All benefits above certainly reached a significant financial cost.
2) Underground negative side waterproofing
This method should be reserved only when other treatments are not feasible.
Notwithstanding, it has one great advantage: you do not have to search, and of course you always have full access in case of failure.
On the other hand, the structure is permanently immersed in water or water vapor and it is something concrete and reinforcements are particularly not enjoy much.
Systems based cement used for these applications are known for their tendency to crack (substrate following cracks).
Another argument is that these products do not strip and the migration of steam too could feed the internal relative humidity causing severe condensation problems, etc. It could also cause problems of delamination in the flooring much.
But, my friends, most of the time it is difficult to dig!
3) sealing the basement on the positive side.
This type of basement waterproofing is for new construction. The big advantage of this type are:
1) the many options available
2) the fact that the concrete and the reinforcements are well protected from water, humidity and products chemicals and is good for construction.
But everywhere - especially when you're the kind of grumpy person - you can find some disadvantages. When the basement waterproofing fails, we must dig and cause a big mess.
Now, is there a defensible argument, I think!
Let's review briefly the main options for waterproofing basement on the positive side. More details will found in other entries of this blog.
What we will ultimately choose depends largely on two factors:
a) the existing water or moisture
b) use of the basement protected.
3.1) with bituminous sealants Scrubbable.
Please forget the simple bitumen emulsions based on oxidized bitumen. They are not damproofing and waterproofing products. Besides, they gradually become stiff and crack.
Opt instead for rubberized asphalt products. A dry film of 1.5 mm of these products can easily withstand hydrostatic pressure medium. In addition to these products have large connection capacity of crack and remain flexible for many years.
3.2) All in cement grout.
As already mentioned, these products tend to be hard to crack. Some two flexible component products show a much better performance especially when reinforced with mesh fiberglass or non-woven reinforcements.
On the other side products containing cement are easy to use and resistance to high hydrostatic pressure.
Some work with product crystallization thoroughly and do a great job in changing the structure of concrete.
In any case I would not not opt for them if I worked on the positive side.
3.3. Antiroot (garden type) membranes SBS
These membranes SBS specially designed for rugged applications roof garden. Their mass is enriched with substances that prevent the passage of roots.
They are burned on a substrate carefully prepared and primed with the appropriate solvent bituminous primer.
The sealing layer is mechanically protected by a membrane dimpled HDPE.
3.4. Antiroot SBS self adhesive membranes
SBS Antiroot self adhesive membranes are easy to use peel and stick membranes usually with SBS 1.5 Weight kg/m2 and 1.5 mm thick.
Membrane is placed vertically with 10cm side overlap. After detaching the silicone paper the membrane is pressed firmly onto the substrate, taking care to avoid trapping air. Certain special bituminous primer elastomer is used for substrate preparation.
Mechanical protection layers of waterproofing is done with a layer HDPE membrane dimples appropriate
3.5. Coverings based polyurethane elastomers, polyurea or combinations. They produce a tough, elastic, crack transition, the root of resistance, waterproofing membrane flawless.
3.6. GCL or layers of geosynthetic clay is a guaranteed solution in waterproofing positive. These coatings have unique characteristics like:
- Self healing properties
- Simple, no seam sealing shudder.
Power also be used for sealing the blind side.
Other options could be synthetic layer membranes such as PVC, etc.
Chris Strogili
href = "http://maconwaterproofing.blogspot.com"> http://maconwaterproofing.blogspot.com
About the Author:
Civil engineer with postgraduate studies in MBA and Marketing
Article Source: ArticlesBase.com - Basement Waterproofing:some Options for Dry Basements
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