Improving the performance of damaged FBECR in chloride-contaminated concrete

No Thumbnail Available

Date

Journal Title

Journal ISSN

Volume Title

Publisher

Saudi Digital Library

Abstract

ﺘﻡ ﺇﺠﺭﺍﺀ ﻫﺫﻩ ﺍﻟﺩﺭﺍﺴﺔ ﻟﺘﺤﺩﻴﺩ ﺍﺜﺭ ﺍﻟﺨﺩﻭﺵ ﻋﻠﻰ ﻁﺒﻘﺔ ﻁـﻼﺀ ﻗـﻀﺒﺎﻥ ﺤﺩﻴـﺩ ﺍﻟﺘﺴﻠﻴﺢ ﺍﻟﻤﻁﻠﻴﺔ ﺒﻤﺎﺩﺓ ﺍﻷﻴﺒﻭﻜﺴﻲ ﻋﻨﺩ ﺍﺴﺘﺨﺩﺍﻡ ﺨﺭﺴﺎﻨﺔ ﺍﺴﻤﻨﺕ ﻋﺎﺩﻱ ﻭﺨﺭﺴﺎﻨﺔ ﺍﺴﻤﻨﺕ ﻤﺨﻠﻭﻁ ﺒﻤﻭﺍﺩ ﺇﻀ ﺎﻓﻴﺔ ﻤﺜل ﺴﻠﻴﻜﺎﻓﻴﻭﻡ ، ﻓﻼﻱ ﺃﺵ ﻭ ﺒﻼﺴﺕ ﻓﺭﻨﺱ ﺴﻼﻕ . ﺃﻴﻀﺎ ﺘﻡ ﺘﺤﺩﻴﺩ ٢±٢٣) ﺍﺜﺭ ﺍﻟﺘﻌﺭﺽ ﻟﺩﺭﺠﺎﺕ ﺍﻟﺤﺭﺍﺭﺓ ﺍﻟﻤﺨﺘﻠﻔﺔ ،٣٥±٢ ٢±٤٨ ﻭ ، ﺩﺭﺠﺔ ﻤﺌﻭﻴﺔ ( ﻋﻠﻰ ﻤﻌﺩل ﺘﺂﻜل ﺍﻟﺤﺩﻴﺩ . ﺘﻤﺕ ﻤﻘﺎﺭﻨﺔ ﺍﻟﺘﺂﻜل ﻨﺘﻴﺠﺔ ﻟﺼﺩﺃ ﺍﻟﺤﺩﻴـﺩ ﻓـﻲ ﺍﻟﻘـﻀﺒﺎﻥ ﺍﻟﻤﻁﻠﻴـﺔ ﻭﻤﻘﺎﺭﻨﺔ ﺒﺎﻟﺘﺂﻜل ﻓﻲ ﺍﻟﻘﻀﺒﺎﻥ ﺍﻟﻐﻴﺭ ﻤﻁﻠﻴﺔ ﺒﻭﺍﺴﻁﺔ ﻗﻴﺎﺱ ﺸ ﺩﺓ ﺍﻟﺠﻬﺩ ﺍﻟﻜﻬﺭﺒﺎﺌ ﻲ ﻟﻠﺘﻴـﺎﺭ ﺍﻟﻨﺎﺘﺞ ﻋﻥ ﺍﻟﺼﺩﺃ ﻭﺃﻴﻀﺎ ﺸﺩﺓ ﺍﻟﺘﻴﺎﺭ ﺍﻟﻜﻬﺭﺒﺎﺌ ﻲ ﺨﻼل ﻓﺘﺭﺍﺕ ﺯﻤﻨﻴﺔ ﻤﻨﺘﻅﻤﺔ . ﺃﻅﻬـﺭﺕ ﻨﺘﺎﺌﺞ ﻗﻴﺎﺱ ﺸﺩﺓ ﺍﻟﺘﻴﺎﺭ ﺍﻥ ﺍﻟﻘﻀﺒﺎﻥ ﺍﻟﺘﻲ ﻟﻡ ﺘﺘﻌﺭﺽ ﻟﺨﺩﻭﺵ ﻓﻲ ﺴﻁﺢ ﺍﻟﻁﻼﺀ ﻜ ﺎﻨـﺕ %٢ ﺨﺎﻤﻠﺔ ﻓﻲ ﻜل ﺒﻴﺌﺎﺕ ﺍﻟﻜﻠﻭﺭ ﺤﺘﻰ ﻨﺴﺒﺔ ﺘﺭﻜﻴﺯ ﻭ ٤٨ ﺘﻌﺭﻴﻀﻬﺎ ﻟﺩﺭﺠـﺔ ﺤـﺭﺍﺭﺓ ﺩﺭﺠﺔ ﻤﺌﻭﻴﺔ .ﺒﻴﻤﻨ ﺎ ﻭﺠﺩ ﺇﻥ ﺍﻟﺼﺩﺃ ﻓﻲ ﺍﻟﻘﻀﺒﺎﻥ ﺍﻟﺘﻲ ﺘﻌﺭﻀﺕ ﻟﺨﺩﻭﺵ ﻓﻲ ﺍﻟﻁﻼﺀ ﻴﺯﻴﺩ ﺒﺯﻴﺎﺩﺓ ﻜﻤﻴﺔ ﺍﻟﺨﺩﻭﺵ ﻭ ﺩﺭﺠﺔ ﺍﻟﺤﺭﺍﺭﺓ ﻭﺘﺭﻜﻴﺯ ﺍﻟﻜﻠﻭﺭ ﻓﻲ ﺍﻟﻌﻴﻨﺔ . ﻭﻗـﺩ ﻭﺠـﺩ ﺇﻥ ﺃﺩﺍﺀ ﺍﻟﻘﻀﺒﺎﻥ ﺍﻟﻤﻁﻠﻴﺔ ﺒﺎﻷﻴﺒﻭﻜﺴﻲ ٤٨ ﻜﺎﻥ ﻤﺭﻀﻲ ﻓﻲ ﺩﺭﺠﺔ ﺍﻟﺤﺭﺍﺭﺓ ﺩﺭﺠﺔ ﻤﺌﻭﻴﺔ ﻭﺤﺘـﻰ %ﺍﻟﺨﺭﺴﺎﻨﺔ ٢ ﻨﺴﺒﺔ ﺘﺭﻜﻴﺯ ﻤﻥ ﺍﻟﻜﻠﻭﺭ ﻓﻲ ﺨﻠﻁﺔ .

Description

Keywords

Citation

Endorsement

Review

Supplemented By

Referenced By

Copyright owned by the Saudi Digital Library (SDL) © 2025