Precast Solutions - May/June 2008 - (Page 23)

transmits that measured information to a computer monitoring point via wireless or cabled connection. Other sensor types are being developed through industry and academic research groups. The goal of all sensor producers is to make the devices affordable since there could potentially be several thousand sensors applied to a single structure. A data logger, similar to the one shown here, can monitor data transmitted from sensors embedded in concrete structures. Courtesy CalTrans CONCLUSION Smart sensors work virtually calibration free and can therefore be used for long-term monitoring of concrete structures. The durability of sensors embedded in concrete can be attained by using special sensor holders protecting the sensor elements and ensuring a perfect bond between the sensor and the surrounding concrete. Because of their very small dimensions, sensors can be used as “microsensors.” Their application in concrete system research might help to contribute to the solution of related experimental one that acquires the physical, biological or chemical input, and converts the measured value into a digital format in the units of the measured attribute and Greg Stutz is NPCA’s vice president of Technical Services. problems. MAY/JUNE 2008 | PRECAST SOLUTIONS 23 http://www.grifcote.com http://www.grifcote.com

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Precast Solutions - May/June 2008 Contents Sustainability and Practicality Security Blanket A Frank Lloyd Wright Takes Shape Concrete Joins MENSA Precast Lightens Up

Precast Solutions - May/June 2008

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