Effect of Hybrid Fibers on Water absorption and Mechanical Strengths of Geopolymer Concrete based on Blast Furnace Slag

Publish Year: 1398
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_JCEMA-3-4_002

تاریخ نمایه سازی: 31 خرداد 1399

Abstract:

In recent years, geopolymers, as a new class of green cement binders, have gained significant attention as an environmental-friendly alternative to Ordinary Portland Cement (OPC) which can potentially reduce negative environmental impacts of OPC. Fiber Reinforced Geopolymer Concrete (FRGPC) is known as a new type of concrete with enhanced ductility characteristics over conventional concrete. In this experimental study, hybrid fibers of 12mm modified polypropylene and 55mm polyolefin were used to manufacture FRGPC specimens based on Granulated Ground Blast Furnace Slag (GGBFS). In this regard, FRGPC and non-fiber specimens were produced. The specimens were subjected to compressive, indirect tensile and 3-point flexural tests, as well as water absorption capacity and specific density studies. The obtained results showed that using hybrid fibers decreased the specific density and water absorption, a slight increase in compressive strength and a significant improvement in tensile and flexural strengths of FRGPC specimens compared to non-fiber specimens.

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Authors

Amir Bahador Moradikhou

Young Researchers and Elites club, Science and Research Branch, Islamic Azad University, Tehran, Iran.

Alireza Esparham

Young Researchers and Elites club, Science and Research Branch, Islamic Azad University, Tehran, Iran.

Mohammad Jamshidi Avanaki

School of Civil Engineering, College of Engineering, University of Tehran, ۱۴۱۵۵-۶۴۵۷, Tehran, Iran.