Microscopic Properties and Splitting Tensile Strength of Fiber-Modified Cement-Stabilized Aeolian Sand
Publication: Journal of Materials in Civil Engineering
Volume 35, Issue 6
Abstract
To study the effects of polypropylene fiber on the splitting tensile strength of cement-stabilized aeolian sand, the influences of cement content, fiber content, and fiber length were analyzed through the splitting tensile strength test and range method. The control variable method was used in conjunction with scanning electron microscopy. The results showed that the influence on splitting strength was exerted in decreasing order by cement content > fiber length > fiber content. With the addition of 0.24% fiber and 9% cement, splitting strength was maximized. The external load on the specimen is eliminated by mechanical friction and adhesion between fiber and sand interface. When the specimen was deformed, the fiber prevented the expansion of internal microcracks and enhanced toughness. A three-dimensional fiber network dispersed the external load and reduced the stress concentration effect. The mechanical properties of cement-stabilized aeolian sand were improved by the fiber, providing a theoretical basis for fiber-modified cement-stabilized aeolian sand subgrade.
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Data Availability Statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
This study was supported by the National Natural Science Foundation of China (Grant No. 52104132); and the Scientific Research Fund of Liaoning Provincial Department of Education (Grant No. LJKZ0346). We would also like to thank Keith (Shanghai) Business Information Consulting Co. Ltd. for their help with language.
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Journal of Materials in Civil Engineering
Volume 35 • Issue 6 • June 2023
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© 2023 American Society of Civil Engineers.
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Received: Jul 8, 2022
Accepted: Oct 5, 2022
Published online: Mar 28, 2023
Published in print: Jun 1, 2023
Discussion open until: Aug 28, 2023
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