Experts propose research priorities for making concrete 'greener'
The challenge of making concrete greener—reducing its sizable carbon footprint without compromising performance—is just like the world's most ubiquitous manufactured material—hard!
Effect of CO2 on the integrity of well cement examined
Geologic carbon storage is the separation and capture of carbon dioxide (CO2) from large stationary sources, such as power plants, followed by injection into deep geologic formations. Long-term storage of ...
Groundbreaking mercury treaty adopted by 140 countries (Update)
More than 140 countries agreed Saturday on a ground-breaking treaty to rein in the use and emission of health-hazardous mercury, the UN said, but environmental activists lamented it did not go far enough.
Rich countries reluctant to help finance mercury treaty, UN officials say
Crisis-weary developed countries' reluctance to help finance a ground-breaking international treaty to rein in the use of health-hazardous mercury is threatening the accord, UN officials warned Thursday.
The secret of nanoparticle packing in cement
Cement production is responsible for 5% of carbon dioxide emissions. If we are to invent a "green" cement, we need to understand in more detail the legendary qualities of traditional Portland cement. A research group partly ...
Pulverized rocks used to strip CO2 from large emitting plants
Researchers in Quebec are developing a process that would see steel, coal and cement plants as well as oil and gas facilities remove most of the carbon dioxide (CO2) from their emissions through chemical reactions with various ...
From downcycling to recycling: Using lighting to separate cement particles from stone
Every year several millions of tons of building rubble are produced. An efficient way of recycling concrete – the building material of the 20th and 21st century – does not yet exist. Researchers are working ...
Special grout required for effective sealing of old nuclear reactors
When Savannah River Nuclear Solutions Area Completions Projects personnel sealed the site's massive P and R reactors, a suite of technologies and services from DOE's Savannah River National Laboratory (SRNL) ...
Philippine gold mine struggles to plug waste spill
The Philippines' largest gold mine said Tuesday it was struggling to contain a waste spillage from its tailings dam which has forced it to suspend operations for the past month.
Elgin platform gas leak plugged safely, says Total
French energy giant Total said Monday it had successfully plugged a gas leak at a North Sea platform that cost the firm hundreds of millions of dollars and threatened to trigger a major explosion.
The first seconds in a building's life: X-ray diffraction studies of cement hydration on the millisecond scale
(Phys.org) -- No matter if it is a giant complex, a high-rise, or an underground project, modern architecture cannot get along without concrete. The component in concrete that holds the other components together ...
Solar thermal process produces cement with no carbon dioxide emissions
Engineers develop cement with 97 percent smaller CO2 and energy footprint
Drexel engineers have found a way to improve upon ordinary Portland cement (OPC), the glue that's bonded much of the world's construction since the late 1800s. In research recently published in Cement and Concrete Composites ...
Recipe for success: Recycled glass and cement
(PhysOrg.com) -- Michigan State University researchers have found that by mixing ground waste glass into the cement that is used to make concrete, the concrete is stronger, more durable and more resistant ...