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Rammed earth structures reinforced by waste tire textile fibers as an attempt to reduce the environmental impacts

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Abstract

Rammed earth is known as a sustainable construction method due to its low energy consumption. Recently, environmental awareness has led to reduced energy consumption by using recycled materials. Moreover, end-of-life materials are causing environmental pollution. Tires are one of the most widely used materials by humans, and used tires result in remarkable pollution at the end of their life. Five series of rammed earth specimens with dimensions of 600 × 600 × 150 mm were constructed for the current experiments. The first was unstabilized rammed earth without the additive mixture and acted as the reference material. The second was an 8% cement-added. In addition to 8% cement, 2% and 4% waste tire textile fibers were added to the third and fourth, respectively. Finally, the fifth included a mixture of soil and 4% tire fibers without any cement addition. The specimens were tested according to the ASTM-E519 standard, as the diagonal shear behavior under compressive pressure in a particular loading system was developed for this research.The addition of cement increased the shear strength by more than 100% and reduced the ductility. In contrast, the use of tire fibers increased the ductility of the specimens. Failure patterns of diagonal tension were observed in the form of vertical cracks. In the samples without cement, in addition to vertical cracks, other cracks developed in the direction of compacted soil layers. Using tire fibers to reinforce rammed earth and improve its stabilization with cement can result in sustainable constructions with improved structural behavior and proper disposal of end-of-life tires.

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Acknowledgments

The authors wish to thank all who assisted in conducting this work.

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Correspondence to M. Safehian.

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The authors certify that they have NO affiliations with or involvement in any organization or entity with any financial interest (such as honoraria; educational grants; participation in speakers’ bureaus; membership, employment, consultancies, stock ownership, or other equity interest; and expert testimony or patent-licensing arrangements), or non-financial interest (such as personal or professional relationships, affiliations, knowledge, or beliefs) in the subject matter or materials discussed in this manuscript.

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Editorial responsibility: Samareh Mirkia.

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Nouri, H., Safehian, M. & Hosseini, S.M.M.M. Rammed earth structures reinforced by waste tire textile fibers as an attempt to reduce the environmental impacts. Int. J. Environ. Sci. Technol. 20, 437–450 (2023). https://doi.org/10.1007/s13762-022-04534-9

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  • DOI: https://doi.org/10.1007/s13762-022-04534-9

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