In Singapore, biocement was created from construction waste and urea

/ Technologies /

At Nanyang Technological University, biocement was invented, which consists exclusively of animal urea and carbide sediment, which arises as a result of engineering works in the mining industry.

About this reports the Tech Xplore. 

In the process of research, the inventors found out that ecological development is stronger than its analogues. It can find application in improving the engineering and geological features of soils.

The soil reinforced with biocement has a strength of up to 1,7 megapascals, which is higher than when treating the same area with an equivalent amount of conventional cement.

The production technology of the new material consists in the reaction of urea and calcium ions from sludge. As a result of their interaction, a solid substance is formed - calcium carbonate precipitate. It is found in shoal, limestone and marble.

A test sample of restoration of sculpture with biocement. Its solution is colorless, which allows you to preserve the original color of the carving during restoration work. Photo: Nanyang Technological University

If such a reaction is carried out in sand, its particles will bind together and form a monolithic mass. Due to its density and waterproof properties, the material can be used to create monuments. 

Biocement has already been proven effective in repairing cracks in rocks, strengthening soils in deserts to combat dust and wind erosion, and building water reservoirs.



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