Abstract
The deformation law of concrete at early age not only affects the shrinkage and cracking of concrete structure in construction, but also further influences its mechanical performance, safety and durability. Based on the existing test methods of cementitious material deformation at early age and aimed at the existing problems, this paper puts forward five kinds of technical solutions to improve the measurement method. Try to use the change in light signals, the electrical signals and leverage-buoyancy method to implement the automatic and continuous deformation monitoring of early-age concrete. Lastly the combination of corrugated pipe, tilt flat base and eddy-current transducer was recommended as the optimal non-contact measurement method for monitoring the deformation of early-age concrete.
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