Investigation on the impact of curing conditions on the behavior of controlled low-strength material as basement of rural roads in the Mekong Delta

https://doi.org/10.31130/ud-jst.2023.562E

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Author

  • Sang Yum Lee
    Induk University, Seoul 01878, Republic of Korea
    Trinh Vo Thi To
    Nguyen Tat Thanh University, Ho Chi Minh City 70000, Vietnam
    Tri Ho Minh Le
    Nguyen Tat Thanh University, Ho Chi Minh City 70000, Vietnam

Keywords:

Flowable-fill materials
sustainable development
Mekong Delta
rural roads
curing conditions

Abstract

This study investigates the performance of controlled low-strength material (CLSM) in the challenging Mekong Delta climate, which experiences rapid weather fluctuations, acid rain erosion, uneven mixture gradation, and subpar aggregate quality. Additionally, difficulties in sieving and quality control have led to the disposal of dredged soil in construction sites. The research aims to enhance the practical use of CLSM as a foundation for rural roads in the Mekong Delta by incorporating dredged soil and mineral additives (6% silica fume, 25% bottom ash) under various curing conditions, including normal, acidic, and salted environments. The study assesses CLSM strength through flowability, setting time, and unconfined compressive strength tests. Findings highlight the significant influence of curing conditions on both early and 28-day CLSM strength, with harsh environments compromising cement hydration. Optimizing dredged soil content and mineral components can bolster CLSM strength and promote sustainable use of dredged soil in construction.

References

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Published

Sep 30, 2023
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How to Cite
Lee, S. Y., T. V. Thi To, and T. H. Minh Le. “Investigation on the Impact of Curing Conditions on the Behavior of Controlled Low-Strength Material As Basement of Rural Roads in the Mekong Delta”. The University of Danang - Journal of Science and Technology, vol. 21, no. 9.3, Sept. 2023, pp. 19-23, doi:10.31130/ud-jst.2023.562E.

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