Study On The Factors Affecting On The Conductive Performance Of The Graphite Slurry Infiltrated Fiber Concrete

After changing the electric conductivity of infiltrated mortar, the graphite slurry infiltrated fiber concrete (GSIFCON) is configured using the processing technique of SIFCON, as well as taking steel fibers and graphite as conductive media in this paper. Moreover, the factors which can affect its electric conductivity performance and its electric mechanism are investigated and summarized in this paper.Firstly, the experiment is made to contrast the veracity of the schemes in testing the resistance. The schemes are two- electrode method,four- electrode method and two- electrode compounding method. It is found that both four- electrode method and two- electrode compounding method can eliminate the error the contact resistance arouses. But considering so many steps of the latter, four- electrode method is selected as scheme for testing the resistances of the samples. In the experiments, no matter the inside condition or the external condition, the factors which can affect the electric conductivity performance of GSIFCON are studied. These factors are the inner (including the content of steel fiber,the content of graphite, the rust inhibitor, the binder ratios and cement aggregate ratios) and the external (including age, the power-supply-voltage and humidity). We can gain conclusions as follows: (1) The content of steel fiber is the most principal factor to affect the electric conductivity of GSIFCON; (2) The appropriate content of graphite can make the electric conductivity of GSIFCON lower; (3) Mixing the rust inhibitor into GSIFCON can also make the electric conductivity of GSIFCON lower, and can ensure the electric conductivity performance of GSIFCON stabilized to improve durability; (4) The binder ratio and cement aggregate ratio are significant for the close-grained extent of GSIFCON; (5) The resistance ratios of GSIFCON are larger with the age longer; (6) The resistance ratios of GSIFCON are invariable basically under the low volts d.c; (7) The resistance ratios of GSIFCON are larger with the water ratios longer; The resistance ratios of GSIFCON mixed into the rust inhibitor are lower than GSIFCON not mixed into the rust inhibitor with the same water ratios. In addition, some simple analysis is made on the phenomena and data.Afterward, the electric mechanisms of the conductive concretes in which there is only one electric material (the graphite conductive concrete and the steel fiber conductive concrete) are analyzed. Basing on the two kinds of electric mechanisms and the phenomena and data from the experiments, the-electric mechanism of GSIFCON is summarized. In the end, the phenomena are explained scientificly and reasonably by the electric mechanism of the electric network, which validates that the electric mechanism is scientific.