Test Study on Effect of Free Iron Oxide in Granite Laterite on Cementation Characteristics of Laterite

TANG Liansheng; WANG Yuxi; SUN Yinlei

doi:10.13204/j.gyjzG22032005

Volume 53 Issue 5

May 2023

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TANG Liansheng, WANG Yuxi, SUN Yinlei. Test Study on Effect of Free Iron Oxide in Granite Laterite on Cementation Characteristics of Laterite[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 137-143. doi: 10.13204/j.gyjzG22032005

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TANG Liansheng, WANG Yuxi, SUN Yinlei. Test Study on Effect of Free Iron Oxide in Granite Laterite on Cementation Characteristics of Laterite[J]. INDUSTRIAL CONSTRUCTION, 2023, 53(5): 137-143. doi: 10.13204/j.gyjzG22032005

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Test Study on Effect of Free Iron Oxide in Granite Laterite on Cementation Characteristics of Laterite

doi: 10.13204/j.gyjzG22032005

TANG Liansheng^1,2,3,
WANG Yuxi^1,2,3,
SUN Yinlei^{1,2,3
,
,}

1. School of Earth Science and Engineering, Sun Yat-Sen University, Zhuhai 519082, China;
2. School of Architectural Engineering, Guangzhou Institute of Science and Technology, Guangzhou 510540, China;
3. Guangdong Provincial Key Lab of Geodynamics and Geohazards (Sun Yat-Sen University), Zhuhai 519082, China

Received Date: 2022-03-20

Abstract

Abstract

Granite laterite is a regional special soil which is widely distributed in South China. The content of iron oxide is an important factor influencing the cementation characteristics of granite laterite. The study on the infulence of free iron oxide content on the cementation strength is of great significance. Taking classic granite laterite in Guangzhou as a research object, the hydrochloric acid osmotic method was used to remove iron oxide from typical granite laterite. Shear tests and content analysis of soil specimens before and after leaching were conducted. On the basis, the rule of soil strength before and after leaching was discussed. The results indicated that the shear peak strength of soil decreased with the decrease of the iron oxide content. By regression analysis of cementation strength and the free iron oxide content, the relation exhited obvious binomial characteristics. The cementation strength was negatively correlated with the water content, and had positive correlation with the cementation content. Taking the water content and free iron oxide content as independent variables and the cementation strength as dependent variable, the formula of cementation strength was established through binary regression analysis, which could better reflected the level of the comentation strength of the soil and had a certain application value.
- granite laterite,
- iron oxide,
- cementation strength,
- regression analysis

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References

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