Results of a new five-year study of recycled concrete show that it performs as well, and in several cases even better, than conventional concrete. Researchers conducted side-by-side comparisons of recycled and conventional concrete within two common applications -- a building foundation and a municipal sidewalk. They found that the recycled concrete had comparable strength and durability after five years of being in service. — Science Daily

Forest Products Laboratory (FPL) researcher Junyong Zhu in co-collaboration with colleagues from the University of Maryland and University of Colorado, have developed a transparent wood material that may be the window of tomorrow. Researchers found that transparent wood has the potential to outperform glass currently used in construction. — USDA Forest Service

Scientists from round the world are meeting in Germany to improve ways of making money from carbon dioxide.

They want to transform some of the CO2 that’s overheating the planet into products to benefit humanity.

They don’t claim the technology will solve climate change, but they say it will help.

Carbon dioxide is already being used in novel ways to create fuels, polymers, fertilisers, proteins, foams and building blocks. — BBC

A team of Boston University researchers recently stuck a loudspeaker into one end of a PVC pipe. They cranked it up loud. What did they hear? Nothing.

How was this possible? Did they block the other end of the pipe with noise canceling foams or a chunk of concrete? No, nothing of the sort. The pipe was actually left open save for a small, 3D-printed ring placed around the rim. That ring cut 94% of the sound blasting from the speaker, enough to make it inaudible to the human ear. — Fast Company

Cut peat blocks were already being used for building houses thousands of years ago. Now, scientists at the University of Tartu have developed a material which could make it possible to print energy-efficient houses out of milled peat and oil shale ash using a 3D printer. — Research in Estonia

According to the CDP report, the cement industry is the second-largest industrial emitter of carbon after the steel industry. And when accounting for its use in human-made structures, it is responsible for more than a third of the world’s carbon emissions. But unlike the transportation sector, in which a new type of fuel can dramatically decrease the sector’s pollutants, cement’s problem is, well, cemented in its formulation [...] — The Outline

The tinted world of tomorrow is coming, and airports—mini-cities of steel, concrete and lots and lots of glass—are interested. In a test last fall, Dallas-Fort Worth International Airport outfitted one of its gates with a new type of “smart glass” that can adjust for sunlight exposure. The obvious point is to keep travelers from getting overheated—but the exercise also brought a more lucrative benefit. — Bloomberg

[...] scientists say a simple and inexpensive new process can transform any type of wood into a material stronger than steel, and even some high-tech titanium alloys. [...]

The results are impressive. The team’s compressed wood is three times as dense as the untreated substance, Hu says, adding that its resistance to being ripped apart is increased more than 10-fold. It also can become about 50 times more resistant to compression and almost 20 times as stiff. — Scientific American

Since 2008, Solidia Technologies [...] has been quietly developing a new cement-making process that produces up to 70% fewer CO2 emissions at a cost that DeCristofaro claims is on par with or better than conventional cement.

Solidia, which was formed in a bid to commercialize ideas developed at Rutgers University in New Jersey, is not the first company to attempt to make environmentally friendly cement. But industry experts say it’s the most promising yet. — Quartz

Molecules 10,000 times narrower than the width of a human hair could hold the key to making possible wooden skyscrapers and more energy-efficient paper production, according to research published today in the journal Nature Communications. The study, led by a father and son team at the Universities of Warwick and Cambridge, solves a long-standing mystery of how key sugars in cells bind to form strong, indigestible materials. — University of Cambridge

In bone, the proportions of protein and mineral are roughly equal – the mineral gives bone stiffness and hardness, while the protein gives it toughness or resistance to fracture. While bones can break, it is relatively rare, and they have the benefit of being self-healing [...]

“All of our existing building standards have been designed with concrete and steel in mind. Constructing buildings out of entirely new materials would mean completely rethinking the whole industry." — cam.ac.uk

adding butts can cut the energy needed to fire bricks by up to 58 per cent.

Fired-clay bricks incorporated with cigarette butts were also lighter with better insulation properties – meaning reduced household heating and cooling costs.

Importantly, bricks incorporated with 1 per cent cigarette butts maintained properties very similar to those of normal bricks. — sciencedaily.com

A scientist in Mexico has created glowing cement that absorbs solar energy during the day and emits light after sun-down.

Claiming the engineered cement can last a hundred years, he says it could make roads and structures glow in the dark, cutting the cost of street-lighting.

The patent is the first for Mexico’s University of San Nicolas Hidalgo, says the researcher behind the invention, Dr. José Carlos Rubio, according to Investigación y Desarrollo. — globalconstructionreview.com