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General Engineering Science Fair Project

Does Sand Size Matter?

Does Sand Size Matter? | Science Fair Projects | STEM Projects
We want to know if the size of sand used to make bricks affects the strength of the bricks. We'll use two different sizes of sand and compare the results.


The hypothesis is that the larger size of sand will make the strongest brick.

Method & Materials

You will make bricks using two different sizes of sand, then test them for durability, weight, and compression.
You will need 4,536 kg of #8 and #30 silica, 4,536 kg of Portland cement, 9,072 cc of water, a wheelbarrow, a shovel, a mold, a small can of oil, 4,536 kg of weights, a bucket, and a compressive strength tester.


The results showed that the larger size of sand (#8) was stronger than the smaller size (#30) in all tests except for one. The average strength of the #8 silica was 6,610 kilograms in the Compression Test, while the #30 silica was only 4,280.6 kilograms.

Why do this project?

This science project is interesting because it shows how the size of sand used to make bricks can affect the strength of the bricks.

Also Consider

Variations to consider include testing three different types of the same kind of brick to find out which is the strongest, and testing the bricks to see which one holds the most water or moisture.

Full project details

You can find additional information and details for this science fair project here. Have fun exploring!

Related video

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