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 ...

Conventional concrete typically contains about 30% ordinary Portland cement paste by volume. Using less can make concrete harder to work with as it becomes stiffer.

Use Plastic Flowerpots to Make DIY Cement Planters Create unique concrete containers for your home or garden from these cheap molds.

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

Engineers have come up with a way to make stronger concrete and cut down on the amount of spent coffee grounds wasted each yar.

Technologies being pioneered in California could make concrete carbon negative — but they won't happen without government leadership.