The recently developed smart strand offers the possibility of measuring the prestress force of the tendon from jacking and all along its service life. In the present study, a method estimating the force distribution in all the tendons of a prestressed concrete (PSC) girder installed with one smart strand is proposed. The force distribution in the prestressed tendons is formulated by the frictio...

When talking about energy efficiency at global scale, buildings are the cornerstone in terms of power consumption and CO2 emissions. New communication paradigms, such as Internet of Things, can improve the way sensors and actuators are accessed in smart buildings. Following this approach, we present an energy efficiency subsystem integrated with a building automation solution that makes the mos...

This paper presents an experimental study on circular stirrup-confined concrete specimens under uniaxial and monotonic load. The effects of stirrup volume ratio, stirrup yield strength and concrete strength on damage evolution of stirrup-confined concrete were investigated. The experimental results showed that the strength and ductility of concrete are improved by appropriate arrangement of the...

Steel is prone to corrosion induced by chloride ions, which is a serious threat to reinforced concrete structures, especially in marine environments. In this work, we report a novel capsule-based self-recovery system that utilizes chloride ions as a trigger. These capsules, which are functionalized via a smart response to chloride ions, are fabricated using a silver alginate hydrogel that disin...

Since prestressed concrete members rely on the tensile strength of the prestressing strands to resist loads, loss of even few them could result catastrophic. Therefore, it is important to measure present residual prestress force. Although there are some techniques for obtaining present prestress force, some problems still remain. One method is to install load cell in front of anchor head but th...

There is a strong necessity for monitoring, runtime configuration, and maintenance of smart transducer networks. This paper describes tools for establishing these tasks in distributed real-time systems. A time-triggered architecture is presented, that accomplishes deterministic, reproducible monitoring of a smart transducer network without probe effects. This architecture allows access to the r...

The advent of smart sensing technologies has opened up new avenues for addressing the billion dollar problem in the wastewater industry of H2S corrosion in concrete sewer pipes, where there is a growing interest in monitoring the environmental properties that govern the rate of corrosion. In this context, this paper proposes a methodology to predict the moisture content of concretes through dat...

The “Web of Things” (WoT) is a vision of a World Wide Web that reaches into the physical world by providing a seamless integration of digitally augmented everyday objects. In this paper, we present the AutoWoT project, a toolkit that facilitates the rapid integration of smart devices into the Web. It thereby lowers the entry barrier for users to expose data and services provided by their smart ...

Future Internet technologies (BigData, Cloud Computing, Mobile Web Apps, etc.) offer manufacturing industries the possibility to engage in a digital transformation leveraging advanced business processes. Furthermore, IoT technologies are enabling technologies for new Smart Manufacturing solutions. The FITMAN project, Future Internet Technologies for Manufacturing Industries, is working on the d...

For the safety of prestressed structures, prestress loss is a critical issue that will increase with structural damage, so it is necessary to investigate prestress loss of prestressed structures under different damage scenarios. Unfortunately, to date, no qualified techniques are available due to difficulty for sensors to survive in harsh construction environments of long service life and large...