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The Strongest Hollow Block

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by

Ronald Bengz

on 9 September 2013

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Transcript of The Strongest Hollow Block

Strong Hollow Blocks
Data and Observations
Introduction
We already have strong hollow blocks but sometimes it does not exceed the expectations of everyone. So we are here to improve the endurance and strength of hollow blocks by using other materials to make it.
Procedure
For the procedure, there will be two sets of cement mix. One set will be added with crushed/powdered sea shells and car grease. The other set will be added with pieces of plastic bottles. Instead of water, saltwater will be used for both setups. Each cement mix will be molded into hollow blocks. It will be set aside for a couple of days. When both blocks are already dry, durability and strength will be tested. It will be both done by dropping both blocks in the second floor of a building which is 15 feet above the ground. To be able to compute for the pressure applied for the both blocks, unit force (which is mass multiplied by acceleration [distance/time]) will be divided by the area. To be able to make sure that the same pressure was applied in dropping, rubber strip will be used to push the blocks .That the rubber was stretched. That block which only breaks a little compared to the other after dropping is considered as the more durable block. Height will be increased until the block will eventually break down to small pieces. Pressure in every altitude will be recorded to know how much pressure the block can’t stand.



Hypotheses
Hypothesis:
The hollow block with the components of oyster shells can endure more pressure than the other hollow block since we have seen churches and houses that are built a long time ago using these types of hollow block and most of those buildings are still standing strong.
Null Hypothesis:
Hollow blocks with components of oyster shells are not really frequently used in the construction of different modern infrastructures. Nowadays, only ordinary hollow blocks are more convenient for the public than any other type of hollow block. This is why there is a chance that our hypothesis can be proven as false.

Materials
Construction of the Hollow Block
Hollow blocks made out of oyster shells
cement and aggregate
saltwater
car grease
crushed oyster shells
Hollow blocks made out of plastic
cement and aggregate
saltwater
car grease
cut plastic bottles
Problem
Which type of hollow block can withstand more pressure between a hollow block composed of cut plastic bottles and a hollow block composed of crushed oyster shells?
 Of all types of hollow blocks, why did we choose the use of oyster shells and cut out plastic bottles in creating hollow blocks?
 How strong are the hollow blocks?
 Is it advisable to use these types of hollow blocks?
 Why do people mostly only use ordinary hollow blocks than these type of hollow blocks?

Materials for the Experiment
rubber strips
stopwatch
pull-push rule
weighing scale
Conclusion
Full transcript