When it comes to strength, concrete certainly holds its own, and then some. Although it is perceived as rugged and durable and often stands the test of time, nothing lasts forever. Unsatisfied with “good enough,” researchers are looking to give concrete a longer life by helping it repair itself. Concrete is ubiquitous. It is used in residential, commercial and infrastructure construction. Despite its popularity, there are drawbacks. It is energy and resource intensive to make and it is sen