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Cement

Centimeters-thick concrete roof uses steel cables and fabric layer to support unique structures

By April Gocha / October 17, 2017

ETH Zurich researchers have used computational modeling to design an ultrathin concrete roof for that optimizes strength while eliminating extra material and weight.

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Video: This is the first 3-D printed reinforced concrete bridge in the world

By Faye Oney / October 11, 2017

Researchers at Eindhoven University of Technology, in collaboration with BAM Infra, recently completed construction of the world’s first 3-D printed reinforced concrete bridge. The steel cables, added during printing, help prestress the concrete to support loads beyond its weight.

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Paraffin offers superior solution to road salt for melting snow, ice

By Faye Oney / September 26, 2017

Salt has long been used on roads and sidewalks to melt snow and ice, but it can destroy vehicles and the environment over time. Researchers have developed a method for melting snow and ice using paraffin, which is less expensive and environmentally-friendly.

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Video: 3-D printed concrete research brings us closer to construction applications

By Faye Oney / September 13, 2017

A mechanical engineering student recently participated in a NIST summer project involving 3-D printed concrete—watch this video to see how the project team tested various cement paste samples to measure viscosity, yield stress, and printing defects.

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cigarette butts

Cigarette butts mixed with asphalt create new pavement material

By Faye Oney / August 25, 2017

A research team may have solved the cigarette butt litter problem. By mixing discarded cigarette butts with asphalt concrete, they produced a material that can handle heavy traffic and reduce the urban heat island effect.

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High-tech methods confirm Pliny the Elder’s observations and reveal new insights into strength of Roman concrete

By April Gocha / July 31, 2017

An international group of scientists recently found that the key to the strength of ancient Roman concrete is the presence of aluminous tobermorite, a mineral that slowly forms within voids and prevents cracks from traversing through the concrete.

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Della Roy Lecture, student poster sessions contribute to successful Cements 2017

By Erica Zimmerman / July 6, 2017

Students, young professionals, and researchers gathered at Georgia Tech to learn, present, and network with others at the 8th Advances in Cements-Based Materials meeting, June 26–28, hosted by ACerS Cements Division. Highlights included the student poster session and Della Roy Lecture.

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Video: Concrete reinforced with recycled tire fibers has enhanced performance, reduced environmental impact

By April Gocha / June 28, 2017

Scientists at the University of British Colombia (Vancouver, British Colombia, Canada) have a new strategy that just might be going somewhere—they’ve devised a technique to incorporate recycled rubber tire fibers into concrete to reuse the waste material, improve the durability of concrete, and reduced the carbon footprint of the concrete industry.

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Taller concrete wind turbine towers may finally get off the ground to expand wind power potential

By April Gocha / June 12, 2017

According to studies of wind power potential from towers positioned at varying distances off the ground, taller wind turbine towers would make wind power viable in a much wider region of the United States than is currently feasible.

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Disorderly conduct: Simulations reveal irradiated materials are surprisingly disordered, question safety of vitrified nuclear waste

By April Gocha / June 8, 2017

New atomistic simulations by researchers at the University of California, Los Angeles and Oak Ridge National Lab are revealing that irradiated materials are even more disordered that previously thought—calling into question the safety of vitrified nuclear waste.

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