Flexural Behavior of Polyester Polymer Concrete Subjected to Different Chemicals
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 28، شماره: 7
سال انتشار: 1394
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 420
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شناسه ملی سند علمی:
JR_IJE-28-7_003
تاریخ نمایه سازی: 15 آذر 1394
چکیده مقاله:
Polymer concrete (PC) is a composite material prepared by resin and aggregates. Advantages of polymer concretes include rapid curing, high flexural and compressive strengths, suitable chemicalresistance and low permeability. In this research, a comparative study was performed on degradation ofpolyester resin concrete in different chemical solutions. Polymer concrete specimens were examined for flexural strength and flexural toughness after two and four months of exposure to the chemicals(i.e. sulfuric acid, sodium hydroxide, sodium sulfate, nitric acid, hydrochloric acid, citric acid,demineralized water, potable water, potassium hydroxide, gas oil). Results showed that the highest decrease in flexural strength occurred in sodium hydroxide solution after two months of exposure. Comparing acid attack to the specimens it was found that citric acid as an organic acid, despite ofhigher pH, had the highest impact on flexural strength. The flexural strength of PC specimens decreased considerablly in all chemicals (except in gas oil). There was not significant difference between two and four months of exposuring, therefore, the main degrading processes start during the first 60 days of exposuring
کلیدواژه ها:
نویسندگان
m.j Hashemi
Polymer Research Lab., School of Chemical Engineering, Iran University of Science and Technology (IUST) Iran
m Jamshidi
Polymer Research Lab., School of Chemical Engineering, Iran University of Science and Technology (IUST) Iran