{"id":10706,"date":"2015-11-03T00:00:00","date_gmt":"2015-11-03T00:00:00","guid":{"rendered":"https:\/\/engineering.uodiyala.edu.iq\/%d9%86%d8%b4%d8%b1-%d8%a8%d8%ad%d8%ab-%d8%b9%d9%84%d9%85%d9%8a-12\/"},"modified":"2023-03-12T03:51:38","modified_gmt":"2023-03-12T03:51:38","slug":"%d9%86%d8%b4%d8%b1-%d8%a8%d8%ad%d8%ab-%d8%b9%d9%84%d9%85%d9%8a-12","status":"publish","type":"post","link":"https:\/\/engineering.uodiyala.edu.iq\/?p=10706","title":{"rendered":"\u0646\u0634\u0631 \u0628\u062d\u062b \u0639\u0644\u0645\u064a"},"content":{"rendered":"
\n

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( <\/span>International Journal of Engineering Research &technology<\/span> <\/span>(IJ<\/span>E<\/span>RT)<\/span>)<\/span><\/p>\n

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\nThis laboratory research is concerned with the shear transfer behavior of self-compacted concrete SCC push-off specimens being exposed to high temperatures for one time or more. Two types of casting water are used, namely, tap water (drinkable) and raw<\/span> <\/span>water (undrinkable) which is brought from local wells, a situation which is currently under use in Iraq especially in large engineering facilities far from cities. Effect of heat exposure is also studied due to well-known unstable circumstances that Iraq faces. Twenty-four pecimens  are  cast  and  some  of  them  are  exposed  to  different  levels  of  heating.  Later  on  after  heating  in  an  electrical  furnace, specimens  are  cooled  down  by  two  ways,  gradually,  by  leaving  them  to  air  for  one  day,  and  the  fast  way  by  gently  putting  in  water. Testing of specimens is carried out by loading each one, using compression machine until failure. It is observed that using raw water in  casting  SCC  (no heatexposure)  leads  to  decrease  in  shear  transfer  strength  and  in  vertical  slip  in  addition  to  the  decrement  in compressive strength and tensile strengthen comparison with using potable water. It is also observed that heating and then rapid cooling cause  tangible  shear  transfer  strength, slip,  compressive  strength  and  tensile  strength  decrease  especially  when  raw  water  is  used  for concrete casting.<\/span><\/p>\n

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http:\/\/www.engineering.uodiyala.edu.iq\/
\n<\/span><\/div>\n<\/p>\n

 <\/span><\/p>\n

 <\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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