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What is bio-bitumen?

Bio-bitumen is a bio-based asphalt binding obtainable through renewable biomass materials such as agricultural waste, plant oils, lignin, algae or even animal manure and is an environmentally friendly ...
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From smog to streets: How crop waste blamed for Delhi’s pollution could soon build roads

What if the crop waste that chokes Delhi every winter could quietly turn into smoother roads? Scientists at CSIR-Central Road Research Institute (CRRI) say it already can. A new bio-bitumen technology ...