Effect of Rubber Treated by Acidic Solution On Some Mechanical Properties of Rubberize Cement Mortar

Abstract

In the present work, the properties of rubberize cement mortar containingcrumb rubber treated by acidic solution are tested and compared with normal rubberize and normal cement mortar.The rubber, which is treated by different acidic solution such as: (H 2 SO 4 , HCl and CH 3 COOH) is used as a fine aggregate as avolumetric partial replacement of sand in cement mortar. The percent of replacement ranged from 5 to 30%.Compressive strength, modulus of rupture and modulus of elasticity (static and dynamic) a retested for all mixes. Cubes of cement mortar also tested by ultrasonic pulse velocity (UPV) and hammer tests method to show the effect of treated rubber on the UPV and hammer tests and to demonstrate the possibility of this methods for estimating the compressive strength of rubberize cement mortar.The results show that the treatment of rubber by acidic solution significantly improves the properties of rubberize cement mortar. Moreover the results show that CH 3 COOH gives better improvement compared withH 2 SO 4. The treatment of rubber by HCl shows negative effects on all cement mortar properties. ‫ﺗﺄﺛﯿﺮ‬ ‫اﻟﻤﻌﺎﻟﺞ‬ ‫اﻟﻤﻄﺎط‬ ‫ﻋﻠﻰ‬ ‫ﺣﺎﻣﻀﯿﺔ‬ ‫ﺑﻤﺤﺎﻟﯿﻞ‬ ‫ﺑﻌﺾ‬ ‫ﻟﻤﻮﻧﺔ‬ ‫اﻟﻤﯿﻜﺎﻧﯿﻜﯿﺔ‬ ‫اﻟﺨﺼﺎﺋﺺ‬ ‫اﻻﺳﻤﻨﺖ‬ ‫اﻟﻤﻄﺎﻃﯿﺔ‬ ‫اﻟﺨﻼﺻﺔ‬ ‫ﻤﻭﻨﺔ‬ ‫ﺨﺼﺎﺌﺹ‬ ‫ﺩﺭﺍﺴﺔ‬ ‫ﺘﻡ‬ ‫ﺍﻟﺒﺤﺙ‬ ‫ﻫﺫﺍ‬ ‫ﻓﻲ‬ ‫ﺍﻻﺴﻤﻨﺕ‬ ‫ﺒﺎﻟﻤﺤﺎﻟﻴل‬ ‫ﻤﻌﺎﻟﺞ‬ ‫ﻤﻁﺎﻁ‬ ‫ﻋﻠﻰ‬ ‫ﺍﻟﺤﺎﻭﻴﺔ‬ ‫ﺍﻟﻤﻁﺎﻁﻴﺔ‬ ‫ﻤﻭﻨﺔ‬ ‫ﻤﻊ‬ ‫ﺍﻟﻨﺘﺎﺌﺞ‬ ‫ﻤﻘﺎﺭﻨﺔ‬ ‫ﻭﺘﻡ‬ ‫ﺍﻟﺤﺎﻤﻀﻴﺔ‬ ‫ﺍﻻﺴﻤﻨﺕ‬ ‫ﻭﺍﻻﻋﺘﻴﺎﺩﻴﺔ‬ ‫ﺍﻟﻤﻁﺎﻁﻴﺔ‬. ‫ﻤﺤﺎﻟﻴـل‬ ‫ﺜﻼﺜـﺔ‬ ‫ﺍﺴـﺘﺨﺩﺍﻡ‬ ‫ﺘﻡ‬ ‫ﻭﻫﻲ‬ ‫ﺍﻟﻤﻁﺎﻁ‬ ‫ﻟﻤﻌﺎﻟﺠﺔ‬ ‫ﺤﺎﻤﻀﻴﺔ‬ (H 2 SO 4 , HCl and CH 3 COOH) ‫ﺍﻟﻤﻁـﺎﻁ‬ ‫ﺍﺴﺘﺨﺩﺍﻡ‬ ‫ﺘﻡ‬ ‫ﺤﻴﺙ‬ ‫ﻜﻨﺴﺒﺔ‬ ‫ﻤﻥ‬ ‫ﺘﺘﺭﺍﻭﺡ‬ ‫ﻭﺒﻨﺴﺒﺔ‬ ‫ﺍﻟﻨﺎﻋﻡ‬ ‫ﺍﻟﺭﻜﺎﻡ‬ ‫ﺤﺠﻡ‬ ‫ﻤﻥ‬ ‫ﺘﻌﻭﻴﻀﺔ‬ ‫ﺤﺠﻤﻴﺔ‬ 5 ‫ﺍﻟﻰ‬ 30 ‫ﺒﺎﻟﻤﺌﺔ‬. ‫ﻤﻘﺎﻭﻤﺔ‬ ‫ﻗﻴﺎﺱ‬ ‫ﺘﻡ‬ ‫ﺍﻟﻤﺒﺎﺸﺭ‬ ‫ﻏﻴﺭ‬ ‫ﺍﻟﺸﺩ‬ ‫ﻭﻤﻘﺎﻭﻤﺔ‬ ‫ﺍﻻﻨﻀﻐﺎﻁ‬) ‫ﺍﻟﻜﺴﺭ‬ ‫ﻤﻌﺎﻤل‬ (‫ﺍﻟﻤﺭﻭﻨﺔ‬ ‫ﻭﻤﻌﺎﻤل‬) ‫ﻭﺍﻟـﺩﻴﻨﺎﻤﻴﻜﻲ‬ ‫ﺍﻻﺴـﺘﺎﺘﻴﻜﻲ‬ (‫ﺍﻟﺨﻠﻁﺎﺕ‬ ‫ﻟﺠﻤﻴﻊ‬. ‫ﺍﻟﻤﻜﻌﺒﺎﺕ‬ ‫ﻓﺤﺹ‬ ‫ﺘﻡ‬ ‫ﻜﺫﻟﻙ‬ ‫ﻭﺫﻟـﻙ‬ ‫ﺍﻟﻤﻁﺭﻗـﺔ‬ ‫ﻭﻁﺭﻴﻘﺔ‬ ‫ﺍﻟﺼﻭﺘﻴﺔ‬ ‫ﻓﻭﻕ‬ ‫ﺍﻻﻤﻭﺍﺝ‬ ‫ﺒﻁﺭﻴﻘﺔ‬ ‫ﻟ‬ ‫ﺘ‬ ‫ﻓـﻲ‬ ‫ﺍﻟﻤﻁﺭﻗـﺔ‬ ‫ﻓﺤﺹ‬ ‫ﻭﻜﻔﺎﺀﺓ‬ ‫ﺍﻤﻜﺎﻨﻴﺔ‬ ‫ﻭﺒﻴﺎﻥ‬ ‫ﺍﻟﺼﻭﺘﻴﺔ‬ ‫ﻓﻭﻕ‬ ‫ﺍﻻﻤﻭﺍﺝ‬ ‫ﺴﺭﻋﺔ‬ ‫ﻤﻌﺭﻓﺔ‬ ‫ﻤﻘﺎﻭﻤـﺔ‬ ‫ﺨﻤـﻴﻥ‬ ‫ﺍﻟ‬ ‫ﻟﻠﺨﺭﺴﺎﻨﺔ‬ ‫ﺍﻻﻨﻀﻐﺎﻁ‬ ‫ﻤﻁﺎﻁﻴﺔ‬. ‫ﻭﺒﺸـﻜل‬ ‫ﺘﺤﺴﻥ‬ ‫ﺍﻟﺤﺎﻤﻀﻴﺔ‬ ‫ﺒﺎﻟﻤﺤﺎﻟﻴل‬ ‫ﺍﻟﻤﻁﺎﻁ‬ ‫ﻤﻌﺎﻟﺠﺔ‬ ‫ﺍﻥ‬ ‫ﺍﻟﻨﺘﺎﺌﺞ‬ ‫ﺒﻴﻨﺕ‬ ‫ﻤﻭﻨﺔ‬ ‫ﺨﺼﺎﺌﺹ‬ ‫ﻤﻠﺤﻭﻅ‬ ‫ﺍﻻﺴﻤﻨﺕ‬ ‫ﺍﻟﻤﻁﺎﻁﻴﺔ‬. ‫ﺍﺴـﺘﺨﺩﺍﻡ‬ ‫ﺍﻥ‬ ‫ﺍﻟﻨﺘﺎﺌﺞ‬ ‫ﺒﻴﻨﺕ‬ ‫ﻜﺫﻟﻙ‬ CH 3 COOH ‫ﻴﻌﻁـﻲ‬ ‫ﻤﻠﺤﻭ‬ ‫ﺘﺤﺴﻴﻨﺎ‬ ‫ﻤﻥ‬ ‫ﻭﺍﻜﺜﺭ‬ ‫ﻅﺎ‬ H 2 SO 4 ‫ﺒﻴﻨﻤﺎ‬ HCL ‫ﻋﻜﺴﻴﺔ‬ ‫ﻨﺘﺎﺌﺞ‬ ‫ﻴﻌﻁﻲ‬. _ PDF created with pdfFactory Pro trial version www.pdffactory.com