Electrochemical judgment method of fire-damaged concrete reinforcement damage
A technology of concrete reinforcement and determination method, applied in the direction of electrochemical variables of materials, etc., can solve problems such as concrete neutralization
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[0051] (1) Specimen preparation: preparation of concrete slabs
[0052] Raw materials: P.O 42.5 cement, gravel 5-25mm, medium sand, round steel with a diameter of 10mm;
[0053] Concrete mix ratio: m (cement): m (sand): m (stone): m (water) = 385: 610: 1220: 220; (this is the mass ratio of the four raw materials)
[0054] Specimen preparation: pouring 30mm×30mm×10mm reinforced concrete slabs, the thickness of the concrete cover is 25mm; (the thickness of the concrete cover refers to the distance between the steel bar and the concrete surface). And all wires are pre-led out for testing; after 28 days of standard curing, the specimens are placed in an indoor natural environment for standby;
[0055] Five concrete slabs of the same size are poured, and the steel bars are placed in two types: well shape and cross shape, and the wires are pre-leaded for testing. %) after 28 days, put it in indoor natural environment for later use.
[0056] Denote as sample 1, sample 2, sample 3,...
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