TY - GEN
T1 - Influence of Curing Conditions on the Strength of Xanthan Gum-Stabilised Sand
AU - Feng, Mingwei
AU - Wang, Juan
AU - Liu, Shu
N1 - Publisher Copyright:
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2025.
PY - 2025
Y1 - 2025
N2 - Biopolymer-stabilised soil holds great promise as an environment-friendly material suitable for sustainable pavement construction. However, the impact of curing conditions, a vital aspect that can influence the mechanical properties of biopolymer-stabilised sand, remains uncertain. In this study, the influences of curing time and relative humidity on the compressive strength of the xanthan gum-stabilised sand were investigated through macroscopic and microscopic laboratory tests. The results indicate that the compressive strength of xanthan gum-stabilised sand is closely correlated with its residual moisture content. As the curing time increases, the residual moisture content gradually decreases, signifying the attainment of different specific residual moisture conditions. This reduction in moisture content is accompanied by an increase in compressive strength. And the strengths of stabilised specimens, tested after the final attainment of equivalent moisture content, are similar in both short-term and long-term curing. Furthermore, an optimal curing humidity of around 40% was identified. SEM test results demonstrate that under the optimal curing condition, thicker and more widely distributed gels bond adjacent sand particles, thereby contributing to the improved strength.
AB - Biopolymer-stabilised soil holds great promise as an environment-friendly material suitable for sustainable pavement construction. However, the impact of curing conditions, a vital aspect that can influence the mechanical properties of biopolymer-stabilised sand, remains uncertain. In this study, the influences of curing time and relative humidity on the compressive strength of the xanthan gum-stabilised sand were investigated through macroscopic and microscopic laboratory tests. The results indicate that the compressive strength of xanthan gum-stabilised sand is closely correlated with its residual moisture content. As the curing time increases, the residual moisture content gradually decreases, signifying the attainment of different specific residual moisture conditions. This reduction in moisture content is accompanied by an increase in compressive strength. And the strengths of stabilised specimens, tested after the final attainment of equivalent moisture content, are similar in both short-term and long-term curing. Furthermore, an optimal curing humidity of around 40% was identified. SEM test results demonstrate that under the optimal curing condition, thicker and more widely distributed gels bond adjacent sand particles, thereby contributing to the improved strength.
KW - Curing condition
KW - Unconfined compressive strength
KW - Xanthan gum-stabilised sand
UR - http://www.scopus.com/inward/record.url?scp=85208276428&partnerID=8YFLogxK
U2 - 10.1007/978-981-97-8237-6_10
DO - 10.1007/978-981-97-8237-6_10
M3 - Conference contribution
AN - SCOPUS:85208276428
SN - 9789819782369
T3 - Lecture Notes in Civil Engineering
SP - 97
EP - 104
BT - Proceedings of the 5th International Conference on Transportation Geotechnics (ICTG) 2024 - Sustainable Infrastructure and Numerical Modeling in Roads, Rails, and Harbours
A2 - Rujikiatkamjorn, Cholachat
A2 - Indraratna, Buddhima
A2 - Xue, Jianfeng
PB - Springer Science and Business Media Deutschland GmbH
T2 - 5th International Conference on Transportation Geotechnics, ICTG 2024
Y2 - 20 November 2024 through 22 November 2024
ER -