Effect of fiber types on fire-induced spalling and thermal performance of UHPC circular columns

IF 6.2 2区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Developments in the Built Environment Pub Date : 2024-08-13 DOI:10.1016/j.dibe.2024.100523

Farid Abed , Salem Khalaf , Yazan Alhoubi , Mohamed A. Moustafa , Mohammad Al Jamal

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Abstract

Ultra-high-performance concrete (UHPC) emerged as a promising material for modern construction, offering unparalleled strength, durability, and versatility. However, there is limited research regarding UHPC's response to fire, prompting urgent investigation and analysis. This paper presents an experimental study focused on evaluating the effect of different types of fibers on the fire performance of UHPC circular columns. The fiber types considered in this study included steel fibers (SF), a hybrid mix of steel and polypropylene fibers (SPPF), and polyvinyl alcohol fibers (PVAF). Additionally, a control column was cast without the inclusion of any fibers. All UHPC specimens were subjected to standard fire exposure, following the ASTM E119 fire test. The results indicated a substantial resistance to spalling with the incorporation of fibers. Moreover, the column featuring PVAF exhibited the lowest internal temperature readings among the columns. Columns reinforced with SF and SPPF exhibited uniform spalling on all sides.

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纤维类型对火灾诱发的 UHPC 圆形柱剥落和热性能的影响

超高性能混凝土（UHPC）具有无与伦比的强度、耐久性和多功能性，是一种前景广阔的现代建筑材料。然而，有关超高性能混凝土对火灾反应的研究却很有限，这就迫切需要进行调查和分析。本文介绍了一项实验研究，重点评估不同类型的纤维对 UHPC 圆形柱防火性能的影响。本研究考虑的纤维类型包括钢纤维 (SF)、钢纤维和聚丙烯纤维的混合纤维 (SPPF) 以及聚乙烯醇纤维 (PVAF)。此外，还浇注了不含任何纤维的对照柱。所有 UHPC 试样都按照 ASTM E119 防火测试方法进行了标准防火测试。结果表明，加入纤维后，抗剥落能力大大增强。此外，采用 PVAF 的柱子在所有柱子中显示出最低的内部温度读数。用 SF 和 SPPF 加固的柱子在所有面上都表现出均匀的剥落。

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来源期刊

Developments in the Built Environment Multiple-

CiteScore

7.40

自引率

1.20%

发文量

审稿时长

22 days

期刊介绍： Developments in the Built Environment (DIBE) is a recently established peer-reviewed gold open access journal, ensuring that all accepted articles are permanently and freely accessible. Focused on civil engineering and the built environment, DIBE publishes original papers and short communications. Encompassing topics such as construction materials and building sustainability, the journal adopts a holistic approach with the aim of benefiting the community.