Abstract
Concrete is well known to be a heterogeneous material that is usually considered homogeneous only referring to a scale of several centimetres. This characteristic makes measuring stresses inside concrete a particularly difficult task. Strains can be measured using several well-known devices. Nevertheless, it is almost impossible to derive a correct estimation of the stress within a concrete structure starting from strain measures as the modulus of elasticity is variable and unknown and creep strains superimpose elastic ones. A preliminary experimental campaign performed to test a stress sensor with the dimensions of a coin to be embedded in concrete is described in the present paper. The effects external applied load are measured comparing the results of short-term loading test performed directly on the sensor and on concrete specimens
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Acknowledgements
The authors would like to acknowledge Safecertifiedstructures Technology s.r.l, STMicroelectronics s.r.l. and Microtel s.r.l. for the collaboration and support during testing.
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Anerdi, C., Gino, D., Malavisi, M., Bertagnoli, G. (2020). A Sensor for Embedded Stress Measure of Concrete: Testing and Material Heterogeneity Issues. In: di Prisco, M., Menegotto, M. (eds) Proceedings of Italian Concrete Days 2018. ICD 2018. Lecture Notes in Civil Engineering, vol 42. Springer, Cham. https://doi.org/10.1007/978-3-030-23748-6_30
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DOI: https://doi.org/10.1007/978-3-030-23748-6_30
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