Hello everyone!
This is my debut post in this forum.
By profession, I am a chemist and I have been studying a construction/insulation material called foamed concrete, which could be an interesting alternative to lightweight concrete.
As far as I know, only one small house has been built with this material (Villa Nivelius in Nacka - address unknown).
If anyone in this esteemed forum knows of any more houses built with this material (not necessarily as a load-bearing construction material) or has worked with it in construction projects, it would be great to hear about it - either as a post or as a private message.
Thanks for a very nice and interesting forum.
This is my debut post in this forum.
By profession, I am a chemist and I have been studying a construction/insulation material called foamed concrete, which could be an interesting alternative to lightweight concrete.
As far as I know, only one small house has been built with this material (Villa Nivelius in Nacka - address unknown).
If anyone in this esteemed forum knows of any more houses built with this material (not necessarily as a load-bearing construction material) or has worked with it in construction projects, it would be great to hear about it - either as a post or as a private message.
Thanks for a very nice and interesting forum.
In summary, foam concrete consists of fine-grained concrete to which a very stable foam (similar to shaving cream) is added. The amount of foam added determines the density of the finished foam concrete. It is then mixed in a suitably sized mixer to obtain a homogeneous mixture, after which the mixture is pumped/poured where desired. Foam concrete flows easily. If suitable fibers are added, surface cracks are also avoided. The density of foam concrete can vary between 400-1800 kg/m3, and the insulation capability is comparable to lightweight concrete of similar density. Foam concrete is also frost resistant. It is a relatively new material, at least the fiber-reinforced variant.
The large concrete companies sell it for use in filling pipe trenches, etc. Then there are some smaller operators. Search on Google "skumbetong skumcement porbetong porcement" or "foamed concrete".
Another alternative, which I personally consider to be worse, is cellbetong (cellcement), which is concrete with XPS added.
Another alternative, which I personally consider to be worse, is cellbetong (cellcement), which is concrete with XPS added.
Having foam concrete as flooring, I'm not sure. It might be usable if it's fiber-reinforced, but I'm doubtful. The biggest advantage of foam cement is probably its insulating ability at a low price.
Check out the web and be amazed.
I want to emphasize that I don't claim to know anything beyond what I have read. I'm just a bit interested in it.
Check out the web and be amazed.
I want to emphasize that I don't claim to know anything beyond what I have read. I'm just a bit interested in it.
A house in Ekebyholm (Rimbo area) has been founded with foam concrete by an eminent northerner of older vintage. A nearby neighbor is studying property management at the university. He has written his thesis about the neighbor's foundation and insulation with foam concrete. I went through this thesis and presentation yesterday when he stayed overnight with us. He convincingly talked about the benefits of founding your house construction with a material as safe and insulating as expanded polystyrene. I, who despise carpenter ants in the property, also appreciate an alternative to expanded polystyrene that the carpenter ants build in. He also talks about different foam mixers since the formulas are often protected by patents. So my suggestion, like his, is to check with www.cellexbuildingsystem.com.
I have been able to look at the manufacturing process of foamed concrete and think the material is great. However, its insulation value is far below EPS, so it needs an outer shell of EPS to be well-insulated. It's a shame that cellexbuildingsystem.com is no longer up, it would have been interesting to read about others' experiences. Foamed concrete is available in Sweden but it's not marketed for house building! Why? It would be too cheap! Believe me!
Agree. The German building material manufacturers are having a field day in Sweden. There's no competition.
The state-owned building material manufacturer Durox, which was established in the 50s to break up the oligopoly of that time, was shut down after pressure from the Moderates. The difference now is that the oligopoly is in foreign hands.
Regarding foam concrete, there is also a method using magnesium to extrude the concrete. Used abroad. It is considered stronger and more water-resistant than foam concrete. Does anyone know if there's anything like that in Sweden?
The state-owned building material manufacturer Durox, which was established in the 50s to break up the oligopoly of that time, was shut down after pressure from the Moderates. The difference now is that the oligopoly is in foreign hands.
Regarding foam concrete, there is also a method using magnesium to extrude the concrete. Used abroad. It is considered stronger and more water-resistant than foam concrete. Does anyone know if there's anything like that in Sweden?
Sorry for referring to the nonexistent page www.cellexbuildingsystem.com. Ingvar Hagström has his own page now at http://www.fadershus.com/. Try that one instead.
Hello everyone! My first post!
I have experience with foam concrete. Well, that's probably an exaggeration! But I know an architect who has worked on building houses that way. He built a house in Nacka. He told me that he only worked abroad and had been building with this technique for a long time. An interesting heating system in the floors consisted of polished concrete. The floors looked like marble, he said. A warm marble floor - that would be lovely. The architect is no longer in Sweden.
Does anyone know of a builder?
I have experience with foam concrete. Well, that's probably an exaggeration! But I know an architect who has worked on building houses that way. He built a house in Nacka. He told me that he only worked abroad and had been building with this technique for a long time. An interesting heating system in the floors consisted of polished concrete. The floors looked like marble, he said. A warm marble floor - that would be lovely. The architect is no longer in Sweden.
Does anyone know of a builder?
is this a material for use in casting a friggebod slab?
I came across this forum and feel that I have some knowledge to contribute. There is a method that has been further developed recently by a company called Aercrete, see www.aercrete.se. They have mobile equipment that mixes and pumps foam concrete directly at the construction site. Foam concrete is used in several different contexts. The most common is probably slab on grade and renovation of old crawl space foundations where foam concrete of low density is used for insulation and building a new floor.
So, would foam concrete be a good material to cast directly on the ground to minimize building height when excavating a basement?
I wasn't planning to have underfloor heating. Do you still need to have draining material underneath?
10cm of Isodrän should be enough for a standard concrete basement floor, without underfloor heating that is. But if you could reduce it and gain a couple of extra centimeters in ceiling height, it wouldn't hurt.
I wasn't planning to have underfloor heating. Do you still need to have draining material underneath?
10cm of Isodrän should be enough for a standard concrete basement floor, without underfloor heating that is. But if you could reduce it and gain a couple of extra centimeters in ceiling height, it wouldn't hurt.
I'm eager to eventually make my own foam machine and follow Domegaia's concept but with better molds.