Analysis of the Shear Strength of Iron Oxide-Kaolinite Cementing Materials in Granite Red Soil DOI Open Access
Yan Han,

Nanbo Cen,

Qinmin Zheng

et al.

Minerals, Journal Year: 2024, Volume and Issue: 15(1), P. 16 - 16

Published: Dec. 27, 2024

Shear strength is the key index to determine stability of a soil slope, and cementation between iron oxide clay minerals one internal factors affecting shear strength; however, effects form on granite-weathered red are still unclear. Kaolinite, which main mineral granite soil, was selected as research object, three different forms (hematite: HT, goethite: GT, amorphous oxide: AIO) microstructure, microscopic quantitative parameters, cohesion, friction angle, were analyzed by scanning electron microscopy, X-ray diffraction, test. The results revealed that promoted particles, characteristics differed with oxide. Hematite mainly showed flocculent cementation, poor simple microstructures. Goethite exhibited acicular best effect. degree aggregation particles increased coatings, thus forming larger aggregate particles. effect those hematite goethite but included both flocculation goethite. Amorphous effectively contact area while had opposite addition kinds ferric reduced fractal dimension apparent porosity, irregularity certain extent, among most significant growth long short axes At content 10 g kg−1, AIO GT cohesion therefore strength, it determined microstructure: area, particle axis. These indicated cementing materials mechanical properties, transformation should be paid attention when predicting slope stability.

Language: Английский

Analysis of the Shear Strength of Iron Oxide-Kaolinite Cementing Materials in Granite Red Soil DOI Open Access
Yan Han,

Nanbo Cen,

Qinmin Zheng

et al.

Minerals, Journal Year: 2024, Volume and Issue: 15(1), P. 16 - 16

Published: Dec. 27, 2024

Shear strength is the key index to determine stability of a soil slope, and cementation between iron oxide clay minerals one internal factors affecting shear strength; however, effects form on granite-weathered red are still unclear. Kaolinite, which main mineral granite soil, was selected as research object, three different forms (hematite: HT, goethite: GT, amorphous oxide: AIO) microstructure, microscopic quantitative parameters, cohesion, friction angle, were analyzed by scanning electron microscopy, X-ray diffraction, test. The results revealed that promoted particles, characteristics differed with oxide. Hematite mainly showed flocculent cementation, poor simple microstructures. Goethite exhibited acicular best effect. degree aggregation particles increased coatings, thus forming larger aggregate particles. effect those hematite goethite but included both flocculation goethite. Amorphous effectively contact area while had opposite addition kinds ferric reduced fractal dimension apparent porosity, irregularity certain extent, among most significant growth long short axes At content 10 g kg−1, AIO GT cohesion therefore strength, it determined microstructure: area, particle axis. These indicated cementing materials mechanical properties, transformation should be paid attention when predicting slope stability.

Language: Английский

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