If you have old, cracked, uneven, or non-level concrete slabs on your patio, you may be thinking about removing the concrete ...

Make a mould First you need to make a mould for your canoe -- a positive mould where the canoe is moulded over the outside, not in a hollow. Glue the foam cubes together to create a 1m x 1m x 4m ...

How to make low-carbon concrete from old cement If the cement industry were a country, it would the third-biggest carbon polluter ...