Eric Sim on MSN

How to make concrete weights at home for cheap

No gym? No problem. In this video, I’ll show you how to make your own concrete weights at home using simple materials and ...
Los Angeles Times

Cement is a big part of the carbon problem. Here’s how to make it part of the solution

In 2014, hundreds of Angelenos gathered downtown to watch more than 2,000 trucks pour concrete into a vast hole. During that event, Los Angeles set a world record: 80 million pounds of concrete were ...
Nature

We use 30 billion tonnes of concrete each year — here’s how to make it sustainable

Jianzhuang Xiao is a professor of recycled concrete materials and structures at Tongji University, Shanghai, China, and a vice-president at Guangxi University, Nanning, China. Zongjin Li is a ...
Wired

How to make a floating concrete canoe

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 block ...
C&EN

Making cement and concrete nature’s way

A photobioreactor, which looks like a large vat of blue liquid with pink light shining, at Prometheus Materials. Stimulated by light, microbes in this bioreactor multiply and react carbon dioxide with ...