This paper explores the use of Internet of Things (IoT) technology for monitoring concrete strength during the curing process. By employing a thermocouple temperature sensor, the study tracks the temperature changes in concrete specimens caused by the hydration process, which is crucial for understanding the development of concrete strength over time. However, the paper highlights that temperature alone cannot accurately predict the concrete’s strength, and therefore, a time-temperature relationship must be established to provide a more reliable assessment. The research introduces the concept of a low-cost, wireless embedded maturity sensor that utilizes an Arduino microcontroller and a cloud-based system (Thingspeak.com) for real-time data collection. This system not only monitors temperature but also tracks the maturity index of the concrete, offering instant access to strength predictions remotely via an app or web portal. The use of IoT enables real-time monitoring, reduces human intervention, and ensures that construction teams have timely, accurate data to make informed decisions about the curing process and structural integrity.
When compared to traditional methods, Concurex offers a significantly more comprehensive and reliable solution for concrete strength monitoring. While the IoT system discussed in the paper relies on temperature sensors and time-temperature correlations to estimate strength, Concurex directly measures the electrical resistance associated with the hydration and strength development process. This provides a more precise and real-time assessment of concrete strength. Additionally, Concurex offers non-destructive, structure-wide monitoring that performs consistently across various environmental conditions (e.g., changes in temperature, humidity, and pressure), whereas the IoT system might require recalibration due to environmental factors. Moreover, Concurex provides a continuous strength growth curve, offering more actionable insights, such as when to remove formwork or apply loads. In contrast, the IoT-based system only provides indirect data, which may not be as precise or comprehensive in its predictions, making Concurex a more robust and efficient solution for optimizing construction timelines and improving the overall quality of the monitoring process.
Varshini PG, Suhail Ahmad Magray, Suresh Bhakare, V Punith Kumar. (2023). Concrete Strength Monitoring Using Applications of IoT. International Research Journal of Engineering and Technology (IRJET), Volume 05, Issue 06, June 2023.
(https://www.irjweb.com/CONCRETE%20STRENGTH%20MONITORING%20USING%20APPLICATIONS%20OF%20IOT.pdf)
