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Title: Influence of polypropylene-fiber on the mechanical properties of self-compacting-concrete with recycled aggregates // Magazine of Civil Engineering. – 2020. – № 7 (99). — С. 9905
Creators: Hajmohammadian Baghba M.; Hashemi S. A. H.; Kalbasi Anaraki K.; Hashemi E. S.
Imprint: 2020
Collection: Общая коллекция
Subjects: Строительство; Строительные материалы и изделия; polypropylene fibers; mechanical properties; self-compacting concrete; concrete aggregates; recycled concrete aggregates; impact resistance of concrete; compressive strength; полипропиленовые волокна; механические свойства; самоуплотняющиеся бетоны; бетонные заполнители; переработанные бетонные заполнители; ударопрочность бетонов; прочность на сжатие
UDC: 691
LBC: 38.3
Document type: Article, report
File type: PDF
Language: English
DOI: 10.18720/MCE.99.5
Rights: Свободный доступ из сети Интернет (чтение, печать, копирование)
Record key: RU\SPSTU\edoc\66111

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In this study, the properties of self-compacting concrete (SCC) produced with different percentages of recycled aggregates (RAs) and polypropylene fibers is investigated in comparison with natural aggregates. The effect of using different percentages of 0 %, 25 %, 50 %, 75 % and 100 % RAs instead of natural aggregates (NAs) and polypropylene fibers of 0.1 %, 0.2 % and 0.3 % by volume of concrete in a fresh and hard state, consisting of a total 20 mixture composition, was investigated in SCC. SCC tests in the fresh state, including Slump Flow, J Ring, V Funnel, and L Box and hard concrete tests include compressive, tensile, and flexural and impact tests performed at the age of 28 days. Increasing the use of RAs does not significantly reduce the SCC tests in the fresh state while increasing the fibers causes a significant decrease in tests. In hardened concrete tests, with the increasing use of RAs of concrete, decreasing in compressive strength, tensile strength, flexural strength, and impact resistance were observed. While increasing the percentage of polypropylene fibers in recycled concrete, there was an increase in impact resistance and tensile strength and more energy absorption in the flexural test.

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Table of Contents

  • Influence of polypropylene-fiber on the mechanical properties of self-compacting-concrete with recycled aggregates
    • 1. Introduction
    • 2. Methods
      • 2.1. Materials
      • 2.2. Mixing ratios and specimen preparation
      • 2.3. Setting and test methods
    • 3. Results and Discussion
      • 3.1. Fresh mix properties
      • 3.2. Properties of hardened concrete
    • 4. Conclusion

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