Freezing resistant cement based stress sensor element
A stress sensor, cement-based technology, used in instruments, measuring forces, measuring devices, etc., can solve the problems of poor frost resistance, easy to be damaged, affecting the service life and measurement accuracy of cement-based stress sensors, and achieve good resistance. Freeze resistance, improved durability, and the effects of sharp changes in pressure-capacitance characteristics
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[0021] Table 1 Properties of 42.5 rapid hardening early strength calcium sulfoaluminate cement
[0022]
[0023] Table 2 Chopped Polypropylene Hydrocarbon Fiber Performance Parameters
[0024]
[0025] Table 3 Performance parameters of carbon nanotubes
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[0027] The weight percent of each mineral phase system in the calcium sulfoaluminate cement clinker of table 4
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[0029] Prepare calcium sulfoaluminate cement, chopped polypropylene hydrocarbon carbon fibers and carbon nanotubes with physical and chemical properties as described in Table 1, Table 2, Table 3 and Table 4 to make 4 groups of frost-resistant cement-based stress sensor elements.
[0030] Chopped polypropylene carbon fiber is cleaned and dried, and a certain proportion of chopped polypropylene carbon fiber is added to the methyl cellulose solution, stirred with a glass rod to ensure that the chopped polypropylene carbon fiber is completely dispersed; at the same time, carbon nanotubes a...
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