The construction industry is under increasing pressure to reduce its environmental footprint, and a significant focus has been placed on low-carbon concrete. Concrete is a vital material for ...
But, while cement - the key ingredient in concrete - has shaped much of our built environment, it also has a massive carbon footprint. Cement is the source of about 8% of the world's carbon ...
The footprints were formed 3.5 million years ago when at least two individuals walked over wet volcanic ash. The wet ash hardened like cement and was then covered by more ash. The footprints show ...
Then a light rain fell onto the ash to create something like wet cement -- an ideal material for trapping footprints. Birds and mammals left a great number of prints, but, spectacularly ...
But workers have told the BBC that gulls have left footprints in each of the three concrete pours - with each needing to be re-skimmed before it sets. Carl Smith, leader of Great Yarmouth Borough ...