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.
A Sensor for Embedded Stress Measure of Concrete: Testing and Material Heterogeneity Issues / Anerdi, C.; Gino, D.; Malavisi, M.; Bertagnoli, G.. - ELETTRONICO. - 42:(2020), pp. 385-399. (Intervento presentato al convegno Italian Concrete Days 2018 tenutosi a Lecco nel June 2018) [10.1007/978-3-030-23748-6_30].
A Sensor for Embedded Stress Measure of Concrete: Testing and Material Heterogeneity Issues
Anerdi C.;Gino D.;Malavisi M.;Bertagnoli G.
2020
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.File | Dimensione | Formato | |
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https://hdl.handle.net/11583/2776914