EFFECT OF STEEL FIBER CONTENT ON COMPRESSIVE STRENGTH OF HIGH STRENGTH CONCRETE WITH OR WITHOUT NANO-SILICA | ||||
| Journal of Al-Azhar University Engineering Sector | ||||
| Article 4, Volume 17, Issue 65, October 2022, Page 1173-1186 PDF (545.46 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/auej.2022.265707 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| lamiaa eied sadek1; Hazem Mohamed Abd El-latif2; Mohammed Abd El-Sattar1 | ||||
| 1October High Institute for Engineering and Technology, 6th October City, Egypt. | ||||
| 2Housing And Building National Research Center, Egypt | ||||
| Abstract | ||||
| During the past few years, high-strength concrete (HSC) has been increased interest amongst civil and structural engineers. On the Other hand, several varieties of fiber-reinforced concretes are now utilized in the building sector for a variety of purposes. This paper discusses the influence of using steel fiber on the compressive strength and splitting strength of high strength concrete with Nano-silica (NS) and/or silica fume (SF). The experimental effort consists of casting and testing 16 distinct mixes. All of the mixes have the same cement content, and some have the same water content and aggregate content, but they differ in factors such as the quantity of NS, SF, and steel fiber. The mixes have been categorized into three main groups. In group one, the impact of adding 3% SF and/or 2% NS was investigated. In group two, the effect of adding 10% SF and the sources of type F admixtureswas studied. In group three, two subgroups to study the effect of adding 5% SF, as well as the effect of w/c ratiowere considered. As a results, it is established that the average compressive strength of mixes containing fibers to the compressive strength of samples without fibers at 7, 28 and 56 days is 1.04, 1.0 and 1.12, respectively. The average ratio of splitting strength to compressive strength at 28 days is around 7.22%. خلال السنوات القليلهالسابقه زاد الاهتمام بإستخدامالخرسانهالعاليهالمقاومه في مجال هندسه التشييد والبناء . وعلى الجانب الاخر ظهر أستخدام الالياف المعدنيه في مجالات متعددة لما لها من مميزات عديدة. هذا البحث يناقش تأثير استخدام الالياف المعدنيه بنسب مختلفه على مقاومه الضغط ومقاومة الشد للخرسانهعاليه المقاومة والمصنعة بإضافه السليكا مع او بدون النانو سليكا. تم صب 16 خلطه وتقسيمها الي 3 مجموعات حسب متغيرات الدراسة السابقة و تم عصر النتائج و وجد ان الحلقات التي تحتوي علي الياف معدنيه عند عمر 28,7 و 56 يوم كانت مقاومه الضغط لها 1.0, 1.04, 1.12 و مقاومه الشد عند عمر 28 يوم كانت 7.22% | ||||
| Keywords | ||||
| Compressive strength; High strength concrete; Steel fiber; Silica fume; Nano-silica; Splitting strength | ||||
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