With the development of environmentally conscious construction projects across the world, there are still many demands of building materials that today’s technologies have not yet satisfied.  Looking at the two main structural building materials, steel and concrete, one in particular lacks characteristics of carbon neutrality.  While steel is nearing full recycled production, concrete remains a very carbon intensive process.  The main contributor to this trait is portland cement.  Portland cement exhausts sulfates, soot and nitrogen oxides when it is created (Chandra 518).  In addition, natural aggregate from raw mined material contributes to concrete’s carbon consumption.  These two aspects of concrete are in need of sustainable remediation in order for carbon neutral projects to allow its use in generous quantities.

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