Scientists Use Treated Human Waste Biochar to Strengthen Concrete
Indian scientists have developed a method to partially replace cement in concrete with biochar derived from treated human faecal sludge. Studies show that replacing 5 to 10 percent of cement with this biochar can increase concrete's compressive strength by 21% and flexural strength by 42% after 91 days of curing. The biochar is produced through controlled drying and pyrolysis of faecal sludge collected from treatment plants. Higher replacement levels, such as 15%, may reduce performance, but the material remains stable over time and could offer a sustainable alternative in construction.
First-hand measurement across 2 sources
We measured how 2 outlets covered this story. No outlet gave this story a measurable political slant — there is no left–right reading to report. Overall sentiment is positive (66/100). Lens Score 35/100.
Outlets measured: economictimes, indiatoday. See how each one headlined and framed the same story in the source comparison below.
AI Analysis
Sentiment was consistent across outlets (58–75/100), indicating broadly factual reporting rather than editorialising.
Coverage timeline
indiatoday broke this story on 9 Sept, 07:42 am. Other outlets followed.