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Experiment 2 : Casting the same mix of concrete in different conditions of cast.
2.1) Plastic - Exploring form and texture with different tensions of holding the plastic sheet.
2.3) Fabric - Exploring form and texture with different tensions of holding the fabric.
2.3) Soil - Exploring form and texture with different sizes of soil particles.
2.4) Plastic/Soil + Fabric - Exploring the phenomenological context of form, texture, material appearance and tactility.
Apparatus and Materials Required : Cement, sand, aggregate, water, fabric (cotton sheet), plastic sheet, tub.
Experiment 2.1: Fabric-Cotton Sheet:
Experiment 2.1: Fabric-Cotton Sheet:
Procedure:
Preparing a concrete mix with a cement:sand ratio of 1:2 with 200ml of water.
Placing the fabric over a circular tub and tying it on 4 sides to adjust the tension of fabric.
a) Condition 1: The fabric is tightly held without bulge.
b) Condition 2: The fabric is loosely help with buldge.
Pouring and spreading the same mix in the different conditions.
Letting the mix dry and record observations while it's setting and post it's set.
Condition 1:
Condition 1:
Cement:sand = 1:2
Water= 200ml
Observation:
While casting:
While pouring the mix on the tightly held fabric, the fabric starts to bulge.
Creasing is seen around the rim of the tub.
Result:
The resulting form had a parabolic profile.
Due to the stretching of fabric, texture of the fabric was rough (as concrete percolated in the gap between fabric strings).
The scale of texture was small.
No creasing was seen.
Condition 2:
Condition 2:
Cement:sand = 1:2
Water= 200ml
Observation:
While casting:
While pouring the mix on the loosely held fabric, the fabric starts to bulge more.
Creasing is seen around the rim of the tub.
Result:
The resulting form had a parabolic profile with smaller radius.
Due to the stretching of fabric, texture of the fabric was rough (as concrete percolated in the gap between fabric strings).
The scale of texture was slightly bigger in this case.
No creasing was seen.
Experiment 2.2: Plastic Sheet:
Experiment 2.2: Plastic Sheet:
Procedure:
Preparing a concrete mix with a cement:sand ratio of 1:2 with 200ml of water.
Placing the sand/aggregate in the tub and dig some out.
After digging, allowing the soil/aggregate to set (angle decide by angle of repose).
a) Condition 1: The concrete mix is casted in plastic sheet tightly held without bulge.
b) Condition 2: The concrete mix is casted in plastic sheet loosely held with bulge.
Pouring and spreading the same mix in the different conditions.
Letting the mix dry and record observations while it's setting and post it's set.
VID_20200824_125836.mp4Condition 1:
Condition 1:
Cement:sand = 1:2
Water= 200ml
Observation:
While casting:
While pouring the mix on the tightly held sheet, not much bulging is seen
As the concrete is poured on the plastic sheet, creasing is seen as the weight of concrete forces the plastic sheet to bulge
Unlike other casts, the mix could not be spread using hand as concrete was not sticking to the surface of plastic making the cast reusable.
Result:
The resulting form was a thin, flat plate like with very little bulge.
Little creasing was seen around the edges with no surface modulation.
The resulting surface was very smooth and had a glossy finish.
Condition 2:
Condition 2:
Cement:sand = 1:2
Water= 200ml
Observation:
While casting:
While pouring the mix on the loosely held sheet, some bulging was seen.
As the concrete is poured on the plastic sheet, creasing is seen as the weight of concrete forces the plastic sheet to bulge
Unlike other casts, the mix could not be spread using hand as concrete was not sticking to the surface of plastic making the cast reusable.
Result:
The resulting form was a thin, flat plate like with bulge.
Little creasing was seen around the edges with no surface modulation.
The resulting surface was very smooth and had a glossy finish.
Experiment 2.3: Soil/Aggregate:
Experiment 2.3: Soil/Aggregate:
Procedure
Preparing a concrete mix with a cement:sand ratio of 1:2 with 200ml of water.
Placing the sand/aggregate in the tub and dig some out.
After digging, allowing the soil/aggregate to set (angle decide by angle of repose).
a) Condition 1: The concrete mix is casted in fine soil.
b) Condition 2: The concrete mix is casted in large aggregate.
Pouring and spreading the same mix in the different conditions.
Letting the mix dry and record observations while it's setting and post it's set.
VID_20200821_130458.mp4Condition 1:
Condition 1:
Cement:sand = 1:2
Water= 200ml
Observation:
While casting:
While digging the soil, due to it's smaller granular size, it had a steeper angle of repose compared to aggregate.
Soil particles stuck to the surface of the mix.
Result:
The resulting form was similar to the pit which was dug in the soil.
The soil particles were stuck to the external surface of the cast. Excess of particles were removed by spraying water over the cast. This resulted in small pores over the surface of cast but still many soil particles were stuck on the surface.
Condition 2:
Condition 2:
Cement:sand = 1:2
Water= 200ml
Observation:
(While casting)
-While digging the aggregate, due to it's larger granular size, it had a gentle angle of repose compared to soil.
-Aggregate particles stuck to the surface of the mix.
(Result)
-The resulting form was not similar to the pit which was dug in the aggregate as some concrete seeped in the gaps between aggregate particles.
-The aggregate were stuck to the external surface of the cast. Excess of particles were removed by plucking with hand. This resulted in large cavities over the surface of cast but still many aggregate particles were stuck on the surface.
Experiment 2.4: Fabric/Plastic + Soil/Aggregate:
Experiment 2.4: Fabric/Plastic + Soil/Aggregate:
Procedure:
Preparing a concrete mix with a cement: sand ratio of 1:2 with 200ml of water.
Placing the sand/aggregate in the tub and dig some out.
After digging, allowing the soil/aggregate to set (angle decide by the angle of repose).
Placing the fabric/plastic sheet over the tub.
a) Condition 1: The concrete mix is cast on fabric (cotton) in fine soil/aggregate
b) Condition 2: The concrete mix is cast on plastic sheet in soil/aggregate.
Pouring and spreading the same mix in different conditions.
Letting the mix dry and record observations while it's setting and post it's set.
soil.mp4Condition 1.1: Soil/Fabric:
Condition 1.1: Soil/Fabric:
Cement:sand = 1:2
Water= 200ml
Observation:
While casting:
While digging the soil, due to it's smaller granular size, it had a steeper angle of repose compared to aggregate.
As the concrete is poured on the fabric, creasing is seen as the weight of concrete forces the fabric to take the form of the pit.
Result:
The resulting form was similar to the pit which was dug in the soil with sharp creasing seen around the edge.
Very less surface modulation was seen (except the creasing) due to small size of soil particles.
The texture of rough texture of fabric was seen on the cast as the concrete pushed the fabric in the pit.
Condition 1.2: Aggregate/Fabric:
Condition 1.2: Aggregate/Fabric:
Cement:sand = 1:2
Water= 200ml
Observation:
(While casting)
-While digging the aggregate, due to it's larger granular size, it had a gentle angle of repose compared to soil.
-As the concrete is poured on the fabric, creasing is seen as the weight of concrete forces the fabric to take the form of the pit.
(Result)
-The resulting form was not similar to the pit which was dug in the aggregate with gentle creasing seen around the edge.
-Gentle surface modulation was seen (along with creasing) due to the large size of aggregate particles.
-The texture of rough texture of fabric was seen on the cast as the concrete pushed the fabric in the pit.
Condition 2.1: Soil/Plastic:
Condition 2.1: Soil/Plastic:
Cement:sand = 1:2
Water= 200ml
Observation:
While casting:
While digging the soil, due to it's smaller granular size, it had a steeper angle of repose compared to aggregate.
As the concrete is poured on the plastic sheet, creasing is seen as the weight of concrete forces the plastic sheet to take the form of the pit.
Unlike other casts, the mix could not be spread using hand as concrete was not sticking to the surface of plastic making the cast reusable.
Result:
The resulting form was similar to the pit which was dug in the soil with sharp creasing seen around the edge.
Very less surface modulation was seen (except the creasing) due to small size of soil particles.
The surface of the cast had a glossy and smooth texture due to the smooth surface of the plastic sheet.
Condition 2.2: Aggregate/Plastic:
Condition 2.2: Aggregate/Plastic:
Cement:sand = 1:2
Water= 200ml
Observation:
While casting:
While digging the aggregate, due to it's larger granular size, it had a gentle angle of repose compared to soil.
As the concrete is poured on the plastic sheet, creasing is seen as the weight of concrete forces the plastic sheet to take the form of the pit.
Unlike other casts, the mix could not be spread using hand as concrete was not sticking to the surface of plastic making the cast reusable.
Result:
The resulting form was not similar to the pit which was dug in the aggregate with gentle creasing seen around the edge.
Gentle surface modulation was seen (along with creasing) due to the large size of aggregate particles.
The surface of the cast had a glossy and smooth texture due to the smooth surface of the plastic sheet.
Final Observation:
Final Observation:
The idea of "gestures" was explored in this experiment. By casting in different conditions, the human gestures of digging, cast selection, form and texture imagination was studied. The question of involvement plays a major role in driving this experiment. This technique of exploring form and texture opens up the idea of crafting.
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