The Concrete Maturity Monitoring System uses the iQ32T RFID tag which is an active RFID tag that uses an advanced radio frequency technology and operates at 915 MHz. It includes a temperature logger with an accuracy that exceeds the ASTM C1074-93 requirements. With the recommended hardware, our average range should be at least 15' to 20'. The RFID tag contains 32 KB of memory and a battery life of 6+ years. The iQ32T can be programmed to wake up, read, and record the ambient temperature at user defined intervals. The stored information can be read at any time you wish, with no restrictions on the number of times it is read. There are also a number of other ways beside concrete maturity, that the RFID tag can be used in the construction industry. Above ground, in clear air, it has a read range of over 300 feet.  


The system uses a portable terminal to read and write to the RFID tag buried in the concrete.  Such as Psion-Teklogix's  "Work About Pro" shown on the left. You could also use a Laptop providing it has a PCMCIA slot.  This solution is not necessarily the best method to communicate with the RFID tag as it can easily be damaged out at the construction sites.  Yet to evaluate the system, or in an emergency it can be very helpful.
 
   

The i-CARD is a PCMCIA card that contains the "brains" of the system. It allows the portable (or PDA) and the RFID tags to "talk" with each other. It also acts as the transceiver and holds the antenna if used with the iPac.

Should you have several RFID tags within the same general reading area, the i-CARD is smart enough to speak with only one tag at a time, and it will let your know which tag you are addressing and whether you are reading or writing to the tag.
 
The Concrete Maturity Software was developed to work specifically with the above-mentioned components. It allows for inputting all of the necessary information, including the sample mix design data to create the concrete maturity curve. Once you have collected the information from the tag, you can immediately display the concrete strength. The software also displays a graph of the time and temperature for a quick visual check. It gives the user a number of options such as using either the Nurse-Saul equation or the Arrhenius methodology. It will also give you the choice of using the standard 28-day or an expediated maturity calculation.
 


The Starter Kit includes a handheld portable computer, the i-Card, an antenna, the Concrete Maturity Software loaded on the handheld and i-Q32T RFID tags.  The customer has a choice of tags with or without the external probe or a combination.You will also receive an outstanding User Manual, that will take you step by step through all of the processes to get you up and running. An onsite visit is available, but to date, we have never had anyone find it necessary for us to make a visit. It truly is as easy as 1-2-3. We also offer support for you at no cost.