Mixture 1

3 parts sand

2 parts cement

2 parts water

Tested after 5 days of curing and held 140lbs

Mixture 3

4.5 parts sand

3.5 parts cement

5.5 parts water

Tested after 4 days of curing and held 95lbs

Second sample tested after 17 days and held 130lbs

Mixture 4

4 parts sand

2.5 parts cement

5 parts water

Tested after 1 day and held 95lbs

Second sample tested after 2 days and held 210lbs

Mixture 5

4 parts glass

3 parts cement

4.5 parts water

Tested after 1 day of curing and held 130lbs

Second sample tested after 13 days and held 140lbs

Mixture 6

6 parts pvc

4 parts cement

6 parts water

Tested after 1 day of curing and held 5lbs

Mixture 7

3 parts styrofoam

3 parts cement

4 parts water

Tested after 1 day of curing and held 10lbs

Second sample tested after 13 days and held 40lbs

Mixture 8

3 parts computer cable

2 parts cement

3 parts water

Tested after 1 day of curing and held 90lbs

Mixture 9

3 parts pebbles

2 parts cement

4 parts water

Tested after 12 days of curing and held 180lbs