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Based on access representative study literature at home and abroad, introduces the FRP bars in recent years, the practical applications in civil engineering; study the performance of the FRP tendons acid salt, moisture, UV and temperature resistant refractory etc. Experimental study of acid corrosion and mechanical properties, the work done as follows: room temperature, in chemical media NaOH solution corrosion test measured the the CFRP tendons water absorption and mass loss, data extraction analysis and summary; preliminary finding FRP bars in the acid-base erosion corrosion mechanism. Ambient conditions, in chemical media HCI solution corrosion test measured the the CFRP tendons water absorption and mass loss, through data extraction and analysis, the preliminary finding of FRP bars in the acid-base erosion corrosion mechanism. 3 under ambient conditions, in the chemical media HCI solution and NaOH solution, the corrosion test, CFRP rib 60d and 120d, respectively tensile test, determination of the tensile strength of the CFRP tendons. Analysis of the data collected for the test, find out the law of CFRP tendon corrosion. Establish a fuzzy model based on the sample data. ANFIS in matlab realization, based the Sugeno fuzzy fuzzy model built by the principles of the system used to predict the FRP bars corrosion in solution. The results show that: 1. Due to the nature of the water absorption of the epoxy matrix, CFRP tendon specimens in alkaline solution corrosion, water absorption of about 68 days maximum, 68 days later, the water absorption began to decrease and stabilize. The CFRP tendons Specimen quality growth increasing with the corrosion time, which is mainly due to the ester bond of fortune the CFRP tendons specimen matrix plasticizer anhydride with an alkali solution in the OH-irreversible reaction, the resultant adsorption and retention in the trial member; as the concentration of the solution increases, the etching time is longer, the greater the mass increased, until the anhydride is completely reacted with the OH-end. 2. Due to the nature of the epoxy resin matrix absorbent, CFRP rib specimen in corrosion of an acid solution, water absorption in about 64 days to reach maximum, 64 days later, the water absorption began to decrease, the corrosion of 130 days, the water absorption stabilized. The CFRP tendons Specimen quality growth increasing with the corrosion time, which is mainly due the CFRP tendons specimen base material with an acid solution occurs irreversible hydrolysis of an ether bond, and chlorinated hydrolysis reaction, the product was adsorbed and retained on the test piece; solution the greater the concentration, the etching time is longer, the greater the mass increase. CFRP rib test piece etched in acid solution, 120 days, almost no change of the mechanical properties, and this is mainly because of the CFRP tendons bear loads the main component of the carbon fiber does not react with acid and alkali, only the matrix material or a plasticizer and an acid alkali chemical to destroy the adhesion of the matrix and fiber, the mechanical properties of only a slight decline. With the growth of etching time, the solution on the base material corrosion fueled, the adhesive force of the matrix and fibers are further smaller, until completely destroyed, the tensile strength will fall to a certain critical value, after which the strength of the CFRP tendons will not will drop. 4. ANFIS in matlab on the realization of the fuzzy model of CFRP tendon corrosion in acid and alkaline solutions are established on the basis of the sample data. Preliminary prediction of the model obtained the model is effective.
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