| The James IQM System enables fresh concrete to be easily and completely monitored in the field for improved safety, quality assurance and optimum setting time.
The IQM System
The temperature history is recorded by the IQM-4010 K Thermocouple Module, which can store over eight thousand temperature readings. Intervals between readings are specified by the user and can vary from one minute to twenty-four hours. Designed with the latest in microcomputer technology, the module is rugged enough for the harshest construction environments.
The module is programmed with the required Equivalent Age of the concrete under test. The red light on the module will flash continuously once this number has been reached. This provides a simple and effective automatic indication that the concrete has reached the desired level of maturity at that location.
Generally, sensors are inserted at critical points subject to
the most extreme temperatures. Using the modular IQM-Meter™
System, there is no limit to the number of sensors that can be embedded
in the wet concrete. The sensor giving the lowest maturity number
indicates the area with the lowest strength, and this sensor will
be the last to signal that the desired maturity has been reached.
The economical M-IQM-4040 PC Software and cable interface allow direct uploading of the data to a Windows environment P.C. The data, then, can be easily imported into any spreadsheet, word processor, or graphing software package for further analysis. Temperature history can also be graphically displayed with respect to time. The IQM software will create maturity indices from the more complex Arrhenius equation according to ASTM procedure. Strength gain can also be calculated via accepted methods. All of these parameters can be graphically displayed with respect to time. |
