Scientists use processed coffee grounds to make stronger concrete

In an idea that fittingly arose over a cup of coffee, researchers have devised a technique to recycle used coffee grounds to make stronger concrete. Engineers at RMIT University say they have developed a way to make concrete nearly 30% stronger by incorporating processed coffee grounds into the material. The researchers have converted waste coffee grounds into biochar, a lightweight residue similar to charcoal, and used that biochar to replace a portion of the sand required to make concrete.

tips

tiny

coffee ground 咖啡渣

concrete 混凝土

incorporate 合并的；合并

biochar 生物炭

lightweight 轻量

residue 剩余；残渣

reside 居住

charcoal 木炭（char 家庭杂务；炭；coal 木炭；煤）

sand 这里是沙子