Amir Hajiesmaeili is a PhD student at the structural maintenance and safety laboratory at the Swiss federal institute of technology. He developed experimental building materials.The material contains a fiber made of very hard polyethylene instead of ordinary steel fibers.Not only do they provide the same amount of structural support as steel fibers, but they also adhere well to cement.As a result, only about half the cement is needed. 

This is notable because the production of conventional Portland cement is a major source of greenhouse gas emissions.In fact, Hajiesmaeili claims that the production of his ultra-high performance fiber-reinforced concrete (UHPFRC) produces 60-70% less carbon dioxide than ordinary steel fibre reinforced concrete.In addition, the material is reported to have lost 10 percent of its weight. 

The new UHPFRC material will be used next year to reinforce Bridges, which will be the first practical application of the material."With this material, we can add value by ensuring a structure that will last for a long time," said laboratory director Eugen Bruhwiler.The solution makes more financial and environmental sense than renovating and reconstructing existing structures such as Bridges and historic sites."

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