Tag Archive for 'Concrete'

Roychand et al. show that the leaching of organic compounds from waste coffee grounds hinders the hydration reaction of cement particles, thereby significantly hampering the compressive strength of waste coffee ground-blended concrete; however, pyrolyzing waste coffee grounds at 350 degrees Celsius led to a significant improvement in its material properties, which resulted in a 29.3% enhancement in the compressive strength of the composite concrete blended with coffee biochar. Image credit: Roychand et al., doi: 10.1016/j.jclepro.2023.138205.

Researchers Turn Waste Coffee Grounds into Valuable Resource for Enhancement of Concrete Strength

Aug 22, 2023 by News Staff

A new study published in the Journal of Cleaner Production is the first to prove that waste coffee grounds can be used to improve concrete. Roychand et...

The carbon-negative, environmentally friendly concrete that is nearly as strong as regular concrete. Image credit: Washington State University.

Environmentally Friendly, Carbon-Negative Concrete Created

Apr 18, 2023 by News Staff

Researchers at Washington State University have demonstrated a new synergistic carbon-capture strategy, i.e., using concrete washout water and biochar...

Aled Roberts and Nigel Scrutton used simulated Martian soil mixed with potato starch and a pinch of salt to create the material that is twice as strong as ordinary concrete and is perfectly suited for construction work in extraterrestrial environments. Image credit: Aled Roberts & Nigel Scrutton, doi: 10.1515/eng-2022-0390.

StarCrete: Materials Scientists Create Starch-Based Concrete for Extraterrestrial Construction

Mar 17, 2023 by Enrico de Lazaro

The StarCrete is twice as strong as regular concrete and is made from extraterrestrial dust, potato starch, and a pinch of salt. Aled Roberts and Nigel...

Collection location and distinctive features of the ancient Roman concrete samples used by Seymour et al. Image credit: Seymour et al., doi: 10.1126/sciadv.add1602.

Scientists Solve Mystery of Why Ancient Roman Concrete Was So Durable

Jan 10, 2023 by News Staff

Ancient Roman concretes have survived millennia, but mechanistic insights into their durability is an enigma. To solve the mystery, researchers from MIT...

Portus Cosanus pier, Orbetello, Italy. Image credit: J.P. Oleson.

New Research Shows How Natural Chemistry Strengthened Ancient Roman Marine Concrete

Jul 4, 2017 by News Staff

While modern marine concrete structures crumble within years, ancient Roman piers and breakwaters endure to this day, and are stronger now than when they...

Colosseum in Rome, Italy. Image credit: Jerzy Strzelecki / CC BY 3.0.

Secrets of Roman Architectural Concrete Uncovered

Dec 18, 2014 by News Staff

A group of scientists led by Dr Anthony Ingraffea of Cornell University has revealed clues to the longevity and endurance of such Imperial Roman monuments...