By Dian Schaffhauser 02/11/21 Engineering researchers at Purdue University have come up with sensors that can determine concrete strength onsite in real-time, and they're testing it right on campus. The hope is that the technology will help builders speed up their construction timelines safely. According to a campus article, concrete mix designs are tested offsite for "compressive strength" before their use in a construction project. Once the testing is done and the mixes vetted for use, they can't be changed without additional testing. The new sensors would eliminate the need for offsite testing by enabling contractors to verify the concrete's maturity right on the jobsite.