Upv Testing on Steel Fiber
Journal of Engineering and Development, Vol. 10, No. 3, September (2006)
ISSN 1813-7822
Effect of Addition of Steel Fiber on the Compressive
Strength of Composite Concrete Materials under High
Temperatures (Experimental & Statistical Work)
Asst. Lect. Sawsan Akram Hassan
Civil Engineering Department, College of Engineering
Al-Mustansiriya University, Baghdad, Iraq
Abstract
This study presents the benefit gained from using steel fiber reinforcement on concrete mixture. The effect of fire on compressive strength is investigated. Two different tests, one of them is the non destructive test which is the ultrasonic pulse velocity (UPV) test and the other is the destructive compression test, are carried out using (10cm) cubs.
Forty-eight cubes (half of them are with steel fiber reinforcement of fiber/concrete ratio of (0.01) by volume and the remaining cubes are without fiber reinforcement) are heated to temperature levels of (100,200,300,400,500,600 and 700°C). Then after specimens are air cooled and (UPV) test is done, the specimens are destructively tested.
The results indicated that the addition of steel fiber increases the compressive strength at all tested heating levels with a maximum percentage increase of (56.9%) at temperature level (500°C) in spite of that they have the same behavior but the residual compressive strength decreases with the addition of steel fiber for the tested heating levels lower than
(400°C) and increases for the heating levels above this degree. Statistical analysis are done to find mathematical relationships to predict some variables of fibrous reinforced
الخـالصـــــــة
الدراسة الحالٌة تتسلط الضوء على الفائدة الحاصلة من استعمال تسلٌح األلٌاا الفوذيٌاة اً تلوولو ٌاا الخرسااوة
حٌث بحث تأثٌر الحرارة على مقاومة اوضغاطها.ا ري ووعان من الفحص احدهما ذاتال ً وهاو حاص سارعة األماوا
.)10 cm((واألخر إتال ً باستعمال وماي ملعبة بطول ضلعUPV) وق الصوتٌة
)0.01(تم تسخٌن(84) وموي (وصفها مقواة بألٌا الفوذي
ISSN 1813-7822
Effect of Addition of Steel Fiber on the Compressive
Strength of Composite Concrete Materials under High
Temperatures (Experimental & Statistical Work)
Asst. Lect. Sawsan Akram Hassan
Civil Engineering Department, College of Engineering
Al-Mustansiriya University, Baghdad, Iraq
Abstract
This study presents the benefit gained from using steel fiber reinforcement on concrete mixture. The effect of fire on compressive strength is investigated. Two different tests, one of them is the non destructive test which is the ultrasonic pulse velocity (UPV) test and the other is the destructive compression test, are carried out using (10cm) cubs.
Forty-eight cubes (half of them are with steel fiber reinforcement of fiber/concrete ratio of (0.01) by volume and the remaining cubes are without fiber reinforcement) are heated to temperature levels of (100,200,300,400,500,600 and 700°C). Then after specimens are air cooled and (UPV) test is done, the specimens are destructively tested.
The results indicated that the addition of steel fiber increases the compressive strength at all tested heating levels with a maximum percentage increase of (56.9%) at temperature level (500°C) in spite of that they have the same behavior but the residual compressive strength decreases with the addition of steel fiber for the tested heating levels lower than
(400°C) and increases for the heating levels above this degree. Statistical analysis are done to find mathematical relationships to predict some variables of fibrous reinforced
الخـالصـــــــة
الدراسة الحالٌة تتسلط الضوء على الفائدة الحاصلة من استعمال تسلٌح األلٌاا الفوذيٌاة اً تلوولو ٌاا الخرسااوة
حٌث بحث تأثٌر الحرارة على مقاومة اوضغاطها.ا ري ووعان من الفحص احدهما ذاتال ً وهاو حاص سارعة األماوا
.)10 cm((واألخر إتال ً باستعمال وماي ملعبة بطول ضلعUPV) وق الصوتٌة
)0.01(تم تسخٌن(84) وموي (وصفها مقواة بألٌا الفوذي
References: 1. Swamy, R. N., Managat, S. P., and Rao, C. V. S. K., “The Mechanism of Fiber Reinforcement of Cement Matrices”, SP-44, ACI, Detroit, 1974, pp.1-28. India, SERC, 1987, pp.2.3-2.23. and Concrete Composites, No. 25, 2003, pp.343-350. No .2, 2005, pp. 373-379. No. 1, 2004, pp. 29-37. Temperatures up to 500F”, ACI Special Publication SP-25, Temperature and Concrete, Detroit, Michigan, USA, 1971, pp.59-105. Michigan, USA, 1971, pp.1-31.