Look how far we have come because of the trail blazed by these Ferrocement Information Networks. New mixes and new armature techniques, based on new, readily available materials use ultra-low water, easy-spread mixes (0.23 w.c.r.) made possible by additives such as Eucon SPJ (Euclid Chemical Company), Micron 3 by Boral Materials Technology, short PVA fibers by Nycon and larger, toughness-enhancing fibers such as Forta Ferro fibers made by Forta Ferro Corp and special closed cell aeration ingredients like Mearlcell 3552 made by Cellular Concrete LLC combine to achieve an easy to spread, no-shrink mortar that will bind with just the top layer of armature reinforcing in such a way that it will disintegrate into small pieces of steel and composite together long before it delaminates and separates from the steel. This style of vapor proof cement with 12 percent or so of closed-cell spherical aeration, in essence, fossilizes even the support reinforcing that is not fully encapsulated by the mortar. It does this by blocking moisture and air movement at the surface and by providing closed cell space where the small amounts of expanding material that might penetrate are non-destructive amounts of iron oxide or ice crystals that can safely grow inside the closed micro voids. This creates a chemically stable zone where the shell contacts the armature steel and even beyond. Replacing the hexagonal wire with standard grade expanded metal plaster lath, causes a greater enhancement of pre-failure tensile strength in this approach. Using 2 to 3 layers of the light, 10 guage grid wire, welded wire 6-6-10 mesh or even 11 gauge galvanized 3"x3" mesh, in a way so that the layers overlap to form a rigid triangular pattern causes, this now largely fossilized sub framing of steel, to impart great tensile enhancing support to the 1.5 cm surface shell above. That 1.5 cm shell is a 2/3 pure fiber-composite layer and a third that is fully integrated with the heavily anchored lath layer and only partially or periodically integrated with light gauge grid rod steel. Encapsulating larger rod steel creates the potential for chemical expansion to overcome the matrix integrity. Using triangular-patterned layers of lighter grid steel, that becomes only periodically or partially encapsulated by the composite weather shield, is a more stable and easier approach to creating a proper tensile reinforcing in all directions. The steel and the shell become independent of each other to a degree while each enhancing the other in an interdependent way where one helps the other have an ability to do its own job better; their independent and interdependent jobs, of flexing, transferring loads, weathering and enduring chemical changes over time. Readily available tools, such as 3/4 inch Pneumatic 'C' ring tools (hog ring guns) with a 5/8 closure, make it easy to make the many quick ties necessary for the upper shell to be anchored to all the steel. This helps that pure, fiber-reinforced, vapor-proof composite shell to move as one with the tensile-braced and compression-braced sub framing, that it is only partially integrated with, while having no-chance of de-lamination (spalling) from the armature. Broad sturdy sub-framing can be made with the same, more chemically stable, light wire approach. Light wire trusses can be made rigid with the same rigidifying triangular pattern of overlapping layers along the sides of wire blocks that serve as internal framing for broad trusses. The light-wire framing supporting two surface shells that move as one under all deformation strains creates a stress-skin/structural sandwich effect. Broad and sturdy structural sandwich forms can really maximize and show off the benefit of super-long enduring shells that are very thin but rigid while having a pliable range. That pliable range is made possible by a properly supported and stronger shell and because of the surface shells thinner cross-section thickness. The higher compression strength, chemical stability and overall toughness of these new surface shells and the well protected sub-framing result in structures now have a life-span that is impossible to predict. This is because the chemical expansion effects and weathering effects, the known processes for cementitious composite to degrade overtime, are largely removed. Light-weight, neat cellular concrete is also readily available. It can be transferred around the light wire truss framing inside the structural sandwich, to fossilize that light steel internal framing in the same way the smaller amount of closed cell aeration does in the denser, high-performance composite surface shell. Cellular concrete can be mixed and pumped at such a fast rate that the cost efficiency from labor saved can, in some situations, like in the US, exceed the labor cost of just bucketing in near-by loose sand. This approach is not as 'A,B, & C' as the sand water and cement approach, but really, it is not much more complicated for the level of capability and investment shown in this video. Very glad for all the new possibilities created by these original innovators seeking to also make good sturdy architecture available to most.
+ShambhalaVillage I learned some ferroconcrete in design school during 1974-75 but that was it. My model was small and about 6mm, sledgehammer just bounced off! Since then I see different kinds of fiber-crete with different fibers, wire, fiberglass, wood shavings, even lot of paper pulp in water and I wonder if the fibers would be incompatible in ferro-crete due to the mesh? If possible to use only fibers in concrete, anything that can make rope of cloth make be a candidate to replace more expensive metal. You can't grow metal.
Wow. U exposed so many possibilities for this type of construction. Can u please send me some details so that I can build something in India. I want to be involved in building affordable homes for the poor. Pls mail me links where I can learn more about this type of construction.
This is not Ferro Cement, this is Ferro concrete, if not sealed it will let water in as it is porous. Ferro Cement is a 2-1 mix of the finest sand and with 15% of the sand replaced by a pozzlan such as Diaotomasious earth or Silica sand, you also add a small amount of trioxide to stop the galvanic reaction (gas bubbles ). This is water tight and does not need sealing.
If it has a coarse aggregate and uses a portland type binder it would be concrete. If it uses a masonry based binder it would be cement. Another frequently used term is Ferro plaster.
Look how far we have come because of the trail blazed by these Ferrocement Information Networks. New mixes and new armature techniques, based on new, readily available materials use ultra-low water, easy-spread mixes (0.23 w.c.r.) made possible by additives such as Eucon SPJ (Euclid Chemical Company), Micron 3 by Boral Materials Technology, short PVA fibers by Nycon and larger, toughness-enhancing fibers such as Forta Ferro fibers made by Forta Ferro Corp and special closed cell aeration ingredients like Mearlcell 3552 made by Cellular Concrete LLC combine to achieve an easy to spread, no-shrink mortar that will bind with just the top layer of armature reinforcing in such a way that it will disintegrate into small pieces of steel and composite together long before it delaminates and separates from the steel. This style of vapor proof cement with 12 percent or so of closed-cell spherical aeration, in essence, fossilizes even the support reinforcing that is not fully encapsulated by the mortar. It does this by blocking moisture and air movement at the surface and by providing closed cell space where the small amounts of expanding material that might penetrate are non-destructive amounts of iron oxide or ice crystals that can safely grow inside the closed micro voids. This creates a chemically stable zone where the shell contacts the armature steel and even beyond.
Replacing the hexagonal wire with standard grade expanded metal plaster lath, causes a greater enhancement of pre-failure tensile strength in this approach. Using 2 to 3 layers of the light, 10 guage grid wire, welded wire 6-6-10 mesh or even 11 gauge galvanized 3"x3" mesh, in a way so that the layers overlap to form a rigid triangular pattern causes, this now largely fossilized sub framing of steel, to impart great tensile enhancing support to the 1.5 cm surface shell above. That 1.5 cm shell is a 2/3 pure fiber-composite layer and a third that is fully integrated with the heavily anchored lath layer and only partially or periodically integrated with light gauge grid rod steel. Encapsulating larger rod steel creates the potential for chemical expansion to overcome the matrix integrity. Using triangular-patterned layers of lighter grid steel, that becomes only periodically or partially encapsulated by the composite weather shield, is a more stable and easier approach to creating a proper tensile reinforcing in all directions. The steel and the shell become independent of each other to a degree while each enhancing the other in an interdependent way where one helps the other have an ability to do its own job better; their independent and interdependent jobs, of flexing, transferring loads, weathering and enduring chemical changes over time.
Readily available tools, such as 3/4 inch Pneumatic 'C' ring tools (hog ring guns) with a 5/8 closure, make it easy to make the many quick ties necessary for the upper shell to be anchored to all the steel. This helps that pure, fiber-reinforced, vapor-proof composite shell to move as one with the tensile-braced and compression-braced sub framing, that it is only partially integrated with, while having no-chance of de-lamination (spalling) from the armature. Broad sturdy sub-framing can be made with the same, more chemically stable, light wire approach. Light wire trusses can be made rigid with the same rigidifying triangular pattern of overlapping layers along the sides of wire blocks that serve as internal framing for broad trusses. The light-wire framing supporting two surface shells that move as one under all deformation strains creates a stress-skin/structural sandwich effect. Broad and sturdy structural sandwich forms can really maximize and show off the benefit of super-long enduring shells that are very thin but rigid while having a pliable range. That pliable range is made possible by a properly supported and stronger shell and because of the surface shells thinner cross-section thickness. The higher compression strength, chemical stability and overall toughness of these new surface shells and the well protected sub-framing result in structures now have a life-span that is impossible to predict. This is because the chemical expansion effects and weathering effects, the known processes for cementitious composite to degrade overtime, are largely removed.
Light-weight, neat cellular concrete is also readily available. It can be transferred around the light wire truss framing inside the structural sandwich, to fossilize that light steel internal framing in the same way the smaller amount of closed cell aeration does in the denser, high-performance composite surface shell. Cellular concrete can be mixed and pumped at such a fast rate that the cost efficiency from labor saved can, in some situations, like in the US, exceed the labor cost of just bucketing in near-by loose sand. This approach is not as 'A,B, & C' as the sand water and cement approach, but really, it is not much more complicated for the level of capability and investment shown in this video. Very glad for all the new possibilities created by these original innovators seeking to also make good sturdy architecture available to most.
+ShambhalaVillage
I learned some ferroconcrete in design school during 1974-75 but that was it. My model was small and about 6mm, sledgehammer just bounced off!
Since then I see different kinds of fiber-crete with different fibers, wire, fiberglass, wood shavings, even lot of paper pulp in water and I wonder if the fibers would be incompatible in ferro-crete due to the mesh?
If possible to use only fibers in concrete, anything that can make rope of cloth make be a candidate to replace more expensive metal. You can't grow metal.
Wow. U exposed so many possibilities for this type of construction. Can u please send me some details so that I can build something in India. I want to be involved in building affordable homes for the poor. Pls mail me links where I can learn more about this type of construction.
@@shaikanaboobacker3059 www.flex-shell-architecture.com
Good information collection. Thanks
can you upload or direct me on methods of ferrocement i want to make a chair using this method
Good video
have you seen the latest indroducing ferrocements? you can google it right here..
This is not Ferro Cement, this is Ferro concrete, if not sealed it will let water in as it is porous. Ferro Cement is a 2-1 mix of the finest sand and with 15% of the sand replaced by a pozzlan such as Diaotomasious earth or Silica sand, you also add a small amount of trioxide to stop the galvanic reaction (gas bubbles ). This is water tight and does not need sealing.
where can I learn more on that? Where did you learn about it?
If it has a coarse aggregate and uses a portland type binder it would be concrete. If it uses a masonry based binder it would be cement. Another frequently used term is Ferro plaster.
#ORAHZEN
Mge chanal ekatath podi udawwak