Final project: sand casting

Concept

What we want to do is to create a kind of shell which with very free form by pouring the concrete onto sandpile. After a test——concrete with different consistencies pouring onto the same sandpile and evaluating the performances, we are looking forward to finding the most suitable consistency for a concrete shell.

new image - vgkqx

Process

Firstly we made a test showing what can 10 gram water do in a default mix, we added 10 more gram water each consistency and poured them onto a slanted panel. They performed wide differences which totally beyond our imagination.

Then we began to deal with the main question. We made four different consistency (the diagram shows the exact figure) and poured them onto the sandpile, trying to made them flew freely and tolerating the overlapping part for better evaluation.

Explanation

From the experiment on how concrete flow with different consistencies, we learned that viscosity did have great affect on how it shaped. And the amount of water decided concrete’s viscosity. Concrete of mixture 1 and mixture 2 flew quickly and hard to shape, after decreasing the water, it became easier to shape the shell. Therefore, for further development, concrete between mixture 3 and mixture 4 can be used to shape a shell, with appropriate flowability to extend and enough viscosity.dav

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Assignment 05 – Adaptive Formwork

We took a triangle as a unit to build the formwork looking forward to creating a casting with screw texture.

We followed the given steps and default data to mix the concrete but it was too dry to drain through the coarse aggregate. We were wondering if the sand was big enough to let concrete drain through. So we decided to leave it right here and we will continue it after we find the way through the coming seminar course.

Flexible Formwork – Smocking & Texture

Smocking:

We firstly defined a 2cm*2cm grid, then tried to sew each chosen point and made this cover. Unfortunately the stirrer didn’t work, so we added 175 gram extra water to make it flowable. We poured concrete  into fabric which we made some smocking to give it an amazing surface.

 

Texture:

We poured concrete onto the cut plastic cups. After two days, we found it too soft due to the too much water, so the main question in this casting is the amount of the water.

P_WALL

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 […]

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 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.

Group 4

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The second day.
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The third day.
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calculation
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calculation
seminar2
description of five mixtures

The five mixtures of our group look similar to each other, it may due to the proportion of cement, sand and water are almost the same. They are stiff and with large granule and harden quickly. However, we didn’t make it flat with tools. Because we found that it wouldn’t be able to see the differences of granular after that.

Desert rose

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 […]

Image Source:

https://en.m.wikipedia.org/wiki/Desert_rose_(crystal)#

Location: Tunisian

Made by: Sand

Materials: Crystal

Fabrication process:

The rosette crystal habit tends to occur when the crystals form in arid sandy conditions, such as the evaporation of a shallow salt basin. The crystals form a circular array of flat plates, giving the rock a shape similar to a rose blossom. Gypsum roses usually have better defined, sharper edges than baryte roses. Celestine and other bladed evaporite minerals may also form rosette clusters. They can appear either as a single rose-like bloom or as clusters of blooms, with most sizes ranging from pea sized to 4 inches (10 cm) in diameter.

The ambient sand that is incorporated into the crystal structure, or otherwise encrusts the crystals, varies with the local environment. If iron oxides are present, the rosettes take on a rusty tone.

What is interesting is that the combination of sand and crystal varies with local environment. And it also shapes differently during different era. Hence, a desert rose can show the location of it and even the era when it formed.