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采用两电极法测量碳纤维混凝土的体积电阻率时 ,需要采用导电胶粘贴碳布电极。对导电胶的要求是接触电阻小、粘结力强以及价格便宜。通过试验研究 ,证明了碳纤维净浆具有较强的粘结能力 ,较小的电阻率 ,且制备容易、价格低 ;在粘贴14天后接触电阻随混凝土龄期的变化较小 ,能够用于碳纤维混凝土的机敏性测量
The two-electrode method to measure the volume resistivity of carbon fiber concrete, the need to use conductive adhesive paste carbon cloth electrode. The requirements of the conductive adhesive is the contact resistance of small, strong bonding and cheap. Through the experimental study, it is proved that the carbon fiber paste has strong binding ability and small resistivity, and is easy to prepare and low in price; the contact resistance changes little with the concrete age after being adhered for 14 days and can be used for carbon fiber concrete Sensitivity measurement