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Structural behavior of lightweight reinforced concrete columns exposure to eccentric loads at high temperature
المصدر
al-Qadisiyah Journal for Engineering Sciences
العدد
المجلد 14، العدد 2 (30 يونيو/حزيران 2021)، ص ص. 83-91، 9ص.
الناشر
تاريخ النشر
2021-06-30
دولة النشر
العراق
عدد الصفحات
9
الموضوعات
الملخص EN
This paper presents an experimental investigation on the behavior of six reinforced concrete columns under elevated temperature.
An expanded clay aggregate (LECA) was used in three reinforced concrete columns, other three remain columns used natural aggregate.
All RC columns have similar cross sectional dimensions of 150mm ×150 mm (width× height); and 1250mm total length.
The columns were designed according to ACI Committee 318-2014 and exposed to different elevated temperatures of 400 oC and500 oC.
After exposure to elevated temperature, the columns were axially loaded by compression force using an eccentricity ratio (e/h) equal to 0.5.
The experimental test results demonstrated a remarkable decrease in the ultimate carrying capacity of the columns when subjected to elevated temperature.
The experimental test results have also revealed that the lightweight reinforced concrete columns have more fire resistance than the normal weight reinforced concrete columns under same elevated temperature.
The ultimate load capacity of LWRC columns decreases by about 6.5 % , and 14.286 % , at elevated temperature magnitude of 400 ºC, and 500 ºC respectively, compared with the control column at ambient temperature.
However, the ultimate load capacity of NWRC columns decreases by about 14.15 % , and 28.571 % , at elevated temperature magnitude of 400 ºC, and 500 ºC respectively, compared with the control column at ambient This paper presents an experimental investigation on the behavior of six reinforced concrete columns under elevated temperature.
An expanded clay aggregate (LECA) was used in three reinforced concrete columns, other three remain columns used natural aggregate.
All RC columns have similar cross sectional dimensions of 150mm ×150 mm (width× height); and 1250mm total length.
The columns were designed according to ACI Committee 318-2014 and exposed to different elevated temperatures of 400 oC and500 oC.
After exposure to elevated temperature, the columns were axially loaded by compression force using an eccentricity ratio (e/h) equal to 0.5.
The experimental test results demonstrated a remarkable decrease in the ultimate carrying capacity of the columns when subjected to elevated temperature.
The experimental test results have also revealed that the lightweight reinforced concrete columns have more fire resistance than the normal weight reinforced concrete columns under same elevated temperature.
The ultimate load capacity of LWRC columns decreases by about 6.5 % , and 14.286 % , at elevated temperature magnitude of 400 ºC, and 500 ºC respectively, compared with the control column at ambient temperature.
However, the ultimate load capacity of NWRC columns decreases by about 14.15 % , and 28.571 % , at elevated temperature magnitude of 400 ºC, and 500 ºC respectively, compared with the control column at ambient temperature.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
2021. Structural behavior of lightweight reinforced concrete columns exposure to eccentric loads at high temperature. al-Qadisiyah Journal for Engineering Sciences،Vol. 14, no. 2, pp.83-91.
https://search.emarefa.net/detail/BIM-1271734
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Structural behavior of lightweight reinforced concrete columns exposure to eccentric loads at high temperature. al-Qadisiyah Journal for Engineering Sciences Vol. 14, no. 2 (2021), pp.83-91.
https://search.emarefa.net/detail/BIM-1271734
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Structural behavior of lightweight reinforced concrete columns exposure to eccentric loads at high temperature. al-Qadisiyah Journal for Engineering Sciences. 2021. Vol. 14, no. 2, pp.83-91.
https://search.emarefa.net/detail/BIM-1271734
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
-
رقم السجل
BIM-1271734
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