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.

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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.

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.

Fabric Reinforced Concrete

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Image source:

http://lancelotcoar.com/concept-for-fabric-reinforced-concrete/

Made by: Lancelot Coar

Materials: concrete, fabric

Process:The invisible forces (of tension and compression) that move through all material structures are in fact curvilinear in nature, contrary to the rectilinear forms they are often contained by. This project examines the ways in which tensile reinforcing might more accurately follow the complex, yet predictable, forms of tensile force-flow as opposed to the overly generalized linear assembly of steel rebar commonly used in these structures.

The work shows a multi-level column and slab construction in which a pre-tensioned structural fabric is pulled into a form that follows the force-flow within the structure. The concrete (modeled in plaster) is then poured within the fabric form work, allowing the hydrostatic pressure to generate the desired form.

Rock Melt

Image source:http://www.floristicplanet.by/fdloristicheskie-skulptury-dzhejmi-norta/

Made by: Jamie North

Materials: concrete, recycled slag, smelting iron ore, plants

Process: The process begins by modelling the work on paper or in a program, then constructing a steel armature if needed and making the form mouldings, which are typically made from plywood or cardboard. Then the detailed mouldings are made from clay and the larger aggregates that will be exposed in the final sculpture. The mouldings are as negative sculpture, as the positive or “end” piece is determined by this crucial stage. Once this negative sculpture is completed, the concrete mix is poured in, vibrated and left to cure before being stripped. Final finishing involves scraping away the clay which is reminiscent of an archaeological process, as the material placements and decisions behind these are revealed. High pressure water is then used to clean away the remaining clay.

The plants positioned within the man-made pylons comfortably complement one another. The process which the concrete undergoes lends it an almost organic and aestheticised appearance, making it a suitable-looking object to support the growth of organic life.