Tracking Concrete Strength Development (IMAGE) Purdue University Caption Purdue researchers analyze data on concrete properties detected from sensors embedded into I-465 near Indianapolis. Credit Purdue University photo/Erin Easterling Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.