The addition of slag has been shown to reduce greenhouse gas emissions from concrete manufacture by more than 95 per cent. Researchers have now discovered that the concrete delivers.
Everlasting concrete is here! It requires no maintenance, and its manufacture emits 80 per cent less CO2 than current products. And just recently, its inventors have been awarded a research prize for their achievement.
Christian John Engelsen at SINTEF is teaching the world to recycle demolition rubble to make new concrete. Anything and everything can be recycled, he says. What takes time is getting people on board.
Keeping concrete warm during transport between the mixing plant and construction site results in a better, cheaper and more eco-friendly product. A new type of concrete mixer truck can result in less wastage and better quality of this important building material.
It sounds a bit strange, but some materials become stronger when subjected to stress. Why is that, and why do they eventually fail anyway?
Norwegian cities are expanding very rapidly and in the areas surrounding many of them, naturally-occurring aggregates for asphalt and concrete production are becoming scarce. The solution may lie in local rock outcrops.
Blue clay from Norway is emerging as a climate-friendly alternative to cements used to make concrete – turning a waste material into a resource.