Influence of construction materials density on data transmission performance of IOT devices.

Real-time monitoring of objects is being applied in bridges, tunnels, water, and others. Hence, the monitoring of the concrete properties using the maturity method and monitoring the electrical resistivity is crucial for its evaluation. This paper evaluates the influence of construction material density on the performance of data transmission from IoT (internet of things) devices in a laboratory. Tests were carried out regarding signal strengths of IoT devices and the reliability of the temperature measurement and its relative error. The results show that for the devices evaluated, the density of the material in which the IoT device is inserted directly influences the RSSI (Received Signal Strength Indication) and the IoT connection. However, there is no change in the quality of data collected in the field, resulting in high reliability in data gathering by IoT devices and thus leading to correct analysis and decision making by the stakeholders. • Construction material with density lower than 1945 kg/m3 do not inhibit data transmission. • As the density increases, the RSSI decreases. • The RSSI intensity do not influence the data quality and errors. • Employing an external antenna increases the RSSI. [ABSTRACT FROM AUTHOR]