Improvement on Flexural Performance of UHPFRC with Hybrid Steel Fiber

IF 0.8 4区工程技术 Q4 ENGINEERING, CIVIL

Teknik Dergi Pub Date : 2020-11-01 DOI:10.18400/tekderg.485565

A. Yavas, Tamer Birol, Kaan Türker, Umut Hasgül, Halit Yazici

引用次数: 4

Abstract

This study investigates the flexural behavior of Ultra-High Performance Fiber Reinforced Concrete (UHPFRC) with hybrid steel fiber referencing the ASTM standard C 1609. Two types of end-hooked fibers in macro fiber concretes and one type short straight fiber in micro fiber concretes were used in mono and hybrid forms. In order to determine the flexural response of UHPFRC, a series of prismatic beam specimens with a dimension of 100 x 100 x 400 mm were tested under the four-point loading and following parameters were compared and discussed in terms of the first cracking load and pattern, flexural strength, deflection capacity, toughness and residual strength capacity under bending loads. The test results showed that as the fiber amount of specimens with the mono fiber increases, in general, better flexural behavior may be ensured. It should be also noted that the hybrid use enhanced the flexural behavior compared to the macro fiber usage.

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混杂钢纤维对UHPFRC抗弯性能的改善

参考ASTM c1609标准，研究了混合钢纤维的超高性能纤维增强混凝土(UHPFRC)的抗弯性能。大纤维混凝土中采用两种端钩型纤维，微纤维混凝土中采用一种短直型纤维。为了确定UHPFRC的抗弯响应，对尺寸为100 × 100 × 400 mm的一系列柱形梁试件在四点荷载下进行了试验，并从首次开裂荷载和模式、抗弯强度、挠曲能力、韧性和抗弯残余强度能力等方面进行了比较和讨论。试验结果表明，随着单纤维试件纤维量的增加，一般可以保证较好的抗弯性能。还应该指出的是，与使用宏纤维相比，混合纤维的使用增强了抗弯性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Teknik Dergi 工程技术-工程：土木

自引率

30.80%

发文量

审稿时长

>12 weeks

期刊介绍： The scope of Teknik Dergi is naturally confined with the subjects falling in the area of civil engineering. However, the area of civil engineering has recently been significantly enlarged, even the definition of civil engineering has somewhat changed. Half a century ago, engineering was simply defined as “the art of using and converting the natural resources for the benefit of the mankind”. Today, the same objective is expected to be realised (i) by complying with the desire and expectations of the people concerned and (ii) without wasting the resources and within the sustainability principles. This change has required an interaction between engineering and social and administrative sciences. Some subjects at the borderline between civil engineering and social and administrative sciences have consequently been included in the area of civil engineering. Teknik Dergi defines its scope in line with this understanding. However, it requires the papers falling in the borderline to have a significant component of civil engineering.