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FLEXURAL BEHAVIOR OF SLURRY INFILTRATED FIBER CONCRETE (SIFCON) CONTAINING SUPPLEMENTARY CEMENTITIOUSE MATERIALS

Authors: Shakir Ahmed Salih --- Qais Jwad Frayyeh --- Manolia Abed Al-wahab Ali
Journal: Journal of Engineering and Sustainable Development مجلة الهندسة والتنمية المستدامة ISSN: 25200917 Year: 2018 Volume: 22 Issue: 2 (Part-3) Pages: 35-48
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

Slurry Infiltrated fiber Concrete (SIFCON) is a relatively new high performance material and can be considered as a special type of Fiber Reinforced Concrete (FRC) with high fiber content. The matrix consists of flowing mortar or cement slurry which must infiltrate properly through the fiber network placed in molds. SIFCON possessing excellent mechanical properties coupled with large ductility and toughness values. SIFCON has found application in area where high ductility and energy absorption are needed especially in seismic-resistant reinforced concrete frames and in structure under abnormal or explosive loads. Other successful applications include pavement overlays, repair of prestressed beams and repair of structural reinforced concrete element.The main aim of this study is to determine the effect of hooked ended steel fiber content and mineral admixture replacement silica fume (SF) on strength and deformation characteristics of SIFCON specimens under flexural loading. Three volume fraction of steel fiber (6, 8.5, and 11) % were used in this investigation .The percentage of SF replacement was (10%), by weight of cement in SIFCON slurry. Both the flexural strength and toughness characteristic were carried out by testing specimens of 100*100*400 mm at the age of 7and 28 days. The results obtained from these tests were compared with those carried out on conventional fiber reinforced mortar (FRM) with 2% fiber content, as control specimens. The test results show superior characteristics of SIFCON ,as compared with normal FRM ,which were affected in positive manner by using cementitiouse materials (SF) as a partial replacement by weight of cement, and with increasing the volume fraction of steel fiber. The flexural strength and toughness value up to (28.08 MPa ) and (159 N.mm),respectively were obtained at age of 28 days.


Article
Experimental Investigation on The Ferrocement Slabs With A Sifcon Matrix
دراسة عملية على البلاطات الفيروسمنتية مع السيفكون

Author: Abdulkhaliq Abdulyimah Jaafer عبد الخالق عبد اليمة
Journal: Wasit Journal of Engineering Sciences مجلة واسط للعلوم الهندسية ISSN: 23056932 Year: 2015 Volume: 3 Issue: 1 Pages: 40-54
Publisher: Wassit University جامعة واسط

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Abstract

The present study conducts to investigate the effect of Slurry Infiltration Fiber Concrete (SIFCON) matrix on flexural response of Ferro cement slabs. For this purpose a total of 14 Ferro cement slabs with SIFCON of size (500*120*25 mm) are cast and tested. The major variables studied in this investigation include the number of mesh layers and various volume ratio of discrete steel fiber (2.5, 5, 7.5 and 10%). Structural performance parameters used for comparisons are load–deflection curves, ultimate load and corresponding deflection at failure, energy absorption and failure mode and crack pattern. The inclusion of SIFCON in the Ferro cement slabs can significantly improve its flexural strength and energy absorption may be concluded. Furthermore, reduction in crack width with a large number of cracks is observed in specimens contain SIFCON compared to control specimens.

اجريت هذه الدراسة للتعرف على تأثير الملاط الخرساني المتخلل للألياف الحديدية (السيفكون) على استجابة البلاطات الفيروسمنتية. و لتحقيق هذا الغرض تم صب وفحص اربعة عشر بلاطة فيروسمنتية مع السيفكون بأبعاد (500 * 120 * 25 ملم) . حيث كانت المتغيرات الرئيسية المدروسة في هذا البحث هي عدد طبقات الاسلاك المعدنية والنسب الحجمية للألياف الحديدية حيث استخدمت نسب حجوم مختلفة (2.5 و 5 و 7.5 و 10٪). كانت معايير الأداء الانشائي المستخدمة لأغراض المقارنات هي منحنيات الحمل - انحراف، التحميل الاقصى والانحراف عند الفشل، وامتصاص الطاقة ووضع الفشل ونمط التشققات. ان وجود السيفكون في البلاطات الفيروسمنتية ساعد بشكل ملحوظ على تحسين مقاومتها للانثناء والطاقة الممتصة لها. وعلاوة على ذلك، لوحظ انخفاض في عرض التشققات مع ظهور عدد كبير من الشقوق في العينات الحاوية على السيفكون مقارنة بعينات السيطرة.

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