Abstract

Our purpose of this experiment is to create a cheap yet strong material that was stronger, yet cheaper to manufacture than concrete. We intended to use the concept of the material Pykrete to make our material.
           
We hypothesised that by mixing sawdust, sand or stone powder would increase the material's tensile strength due to the individual material's properties being able to strengthen the bricks. Tensile strength is the maximum load that a material can support without fracture when being stretched, divided by the original cross-sectional area of the material. Tensile strengths have dimensions of force per unit area and in the English system of measurement are commonly expressed in units of pounds per square inch, often abbreviated to psi.

To make the brick, we mixed and moulded the bricks using 2 universal moulds that were made out of a material called chipboard. We then baked them in the baking oven to solidify the mixture.

We then clamped the bricks using a vice and drilled holes through it and measured the time taken for the drill to penetrate through the entirety of the brick. The result was the time taken in seconds for the drill to penetrate the bricks.

The results were that most of the bricks had similar strength, save for the two which were made out of sawdust and clay and granite powder and clay.

Our time management was not very good, often only 1 or 2 members were able to have been in the lab at anytime instead of our full team of 3 members. If this had been possible, our project would have been less time consuming and more productive. A better material could have been used as a substitute for baking clay.

No comments:

Post a Comment