Honeycombs are actively built by bees, the bees could make just about any shape but over a long period of natural selection their behavior evolved to make shapes that minimize the area of wax needed and still be structurally functional for their needs. Perhaps the same structural principles could be used when trying to improve concrete casting and reducing the amount of material needed to make a variety of concrete shapes.
Image source: https://www.quora.com/Why-does-nature-prefer-hexagonal-shapes
Meanders are sinuous bends in a river with a faster flow of water on the outside channel leaving the inside to be slower therefore depositing sediments. The water flows faster on the outside bend of a river because it has further to travel, its speed and erosive power is therefore greater. This erodes the outside of the meander, producing a river cliff and deeper channel on that side. The bends become deeper and deeper in time, until the water finds a shortcut and the bends are cut off, drying out or becomes separate lakes.
Image source: https://sites.google.com/site/stmarysfluvialstudies/meanders-alice-emily
Image Source: http://matsysdesign.com/2011/09/17/p_wall-sevenstar/ Credits: Fabrication and Installation: Andrei Hakovich, Sean Wong, and Nathan John Date: 2011 Materials: Fiber-Reinforced Plaster Fabrication process: Using nylon fabric and wooden dowels as form-work, the weight of the liquid plaster slurry causes the fabric to sag, expand, and wrinkle before finding a state of equilibrium. The form that emerges resonates […]
Fabrication and Installation: Andrei Hakovich, Sean Wong, and Nathan John
Materials: Fiber-Reinforced Plaster
Using nylon fabric and wooden dowels as form-work, the weight of the liquid plaster slurry causes the fabric to sag, expand, and wrinkle before finding a state of equilibrium. The form that emerges resonates with the tension between our own elastic skin and fluid interior.
What really interests me is the way they shape the casting. Using the self-organization of material under force to shape it. It is similar to the tension between our own skin and fluid interior. This really makes the casting like an alive biology. Maybe it can even breathe through the holes on it, just like cells of human beings.
This is a technique for casting high towers without using scaffolding. As the concrete dries, the same form slides upwards and is used again, adding layer by layer. Maybe a similar concept can be used in a smaller scale somehow?
Image source: https://sv.wikipedia.org/wiki/Glidformsgjutning
Process: Slip forming
This is how most of the world’s plastic products are made, from car body panels to bottle lids. It is also used for glass and metals. The material is heated and forced into a cavity mould made of metal, where it cools and hardens. The moulds can be reused thousands of times which makes it ideal for mass production. The picture is showing one side of a comb mould.
Image source: https://sc02.alicdn.com/kf/HTB14sGpJXXXXXX0XFXXq6xXFXXXh/China-Factory-Plastic-Comb-Making-Injection-Mold.jpg
Process: injection moulding
Made by: Rainer Mutsch
Material: Fiber cement
Process: Produced by the company Eternit fiber-cement is a very durable, fully recyclable material consisting of 100% natural materials like cellulose fibers and water.
Each Dune element is 3D-molded out of one whole fiber-cement panel, the cut-offs are thereby reduced to a minimum.
Image source: https://www.dezeen.com/2010/10/27/dune-by-rainer-mutsch/
Made by: Rachel Dein
Material: clay, plaster
Process: She makes impressions in wet clay, and then pours plaster directly over it. The clay captures the most intricate details. Each clay mould can only be used once, making every piece unique.
Image source: http://www.racheldein.com/gallery/
How things change over time can be frightening but also fascinating! Statues and sculptures of limestone or other more sensitive materials is heavily affected by what we call Acid rain. As the rain falls on the material, it slowly starts to eat of parts, little by little, until you no longer can recognise the initial motive. The method of making something finished, straight or closed, to later remove chosen or random parts is a method used in many fields, art, architecture etc. Siri Derkert osed this way of working on her artwork in the subway station Östermalmstorg in Stockholm. So by first covering a dark part of the wall In white concrete, and later apply force to revel the underlying color and then create lines.
Lime stone statues effected by acid rain.
First image: Unknown
Second image: Rheims Cathedral, France
Siri Derkert working on her art, Stockholm
When pouring concrete into a form there are several things that can go wrong. Can these features be turned into an asset? Can they be controlled or steered in any way? Air or water bubbles is a common problem but can create a beautiful pattern. Although it is hard to control the placement and intensity of the bubbles. Another issue when casting large amount of concrete is the lines created in-between different pours, because the color do differ between different bags of cement and is affected by many other aspects which is hard to control and will therefore result in slight color differences. This can also be turned into an asset.
Airbubbles in light gray casts
Material: Unknown, probably plaster or cement
Made by: Fernando Mastrangelo
Material: Pigmented Cement
Process: Casting in layers
Cement Ceramic vessels
Made by: Studio Twocan
Material: Pigmented Cement
Process: Mould casting
Made by: Hotson Bakker Boniface Haden architects + urbanistes
Osoyoos, BC V0H, Canada
Material: Sand, Clay, Grave, Water, Cement
Process: Rammed Earth
Rammed earth wall at the NK’Mip Desert Heritage Centre in Osoyoos, BC