The influence of salt contents on the compressibility of remolded loess soils

Zuo, Liqin; Lyu, Borui; Xu, Luhua; Li, Luowen

doi:10.1007/s10064-022-02686-z

Cited by 13 publications

(2 citation statements)

References 35 publications

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“…In recent years, with the implementation of various national and regional strategies to develop the Loess Plateau of China, loess construction projects increased unprecedentedly 1 , 7 – 9 . Loess, as an economical and easily accessible construction material, is widely used in engineering constructions such as high-filled foundations, subgrade, and embankments 8 , 10 – 12 . These engineering constructions need to compact the loess to improve its strength and reduce its compressibility and permeability.…”

Section: Introductionmentioning

confidence: 99%

A new index to measure the uniformity of remolded loess

Wang,

Howard,

Peng

et al. 2024

Sci Rep

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The uniformity of remolded loess is crucial for engineering stability and in laboratory testing, as it affects physical and mechanical properties. It is important to have an index which can accurately and conveniently evaluate the uniformity of remolded loess. This study demonstrated and verified the feasibility of using hydraulic conductivity (K) as an indicator for evaluating the uniformity of remolded loess through laboratory experiments and theoretical analysis. In laboratory research, nine loess samples under different preparation conditions were meticulously prepared in duplicate, which were divided into three sets according to the whole dry density (WDD) of approximately 1.3 g/cm3, 1.4 g/cm3, and 1.5 g/cm3 respectively. For the nine duplicate samples, two procedures were performed for each of the sample. One is the uniformity analysis by cutting the soil column and weighing. The other is the hydraulic conductivity experiment. Results showed that sample uniformity is affected by sample preparation conditions, and there are differences in the uniformity of the same WDD samples. The values of K positively correlate with the degree of sample uniformity. In theoretical analysis, based on Darcy’s Law and Kozeny-Carman equation, it is found K is inversely proportional to the variance ($$\sigma^{2}$$ σ 2 ) of the sample dry density. That is, K is positively proportional to the sample uniformity. Since K can be easily determined in the laboratory, the application of this new index in the field of geotechnical engineering makes it very convenient and simple to evaluate the uniformity of remolded loess.

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Section: Introductionmentioning

confidence: 99%

A new index to measure the uniformity of remolded loess

Wang,

Howard,

Peng

et al. 2024

Sci Rep

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“…Loess is Quaternary sediment that is widespread in the northwest of China 1 . With the development of the "Belt and Road Initiative," modern transportation facilities represented by highways and high-speed railways have been built in large numbers 2 – 4 .…”

Section: Introductionmentioning

confidence: 99%

Shear strength characteristics of basalt fiber-reinforced loess

Chen,

Li,

Liu

et al. 2023

Sci Rep

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Loess owns the characteristics of collapsibility, disintegration and solubility, which pose a challenge to engineering construction. To examine the shear strength of basalt fiber-reinforced (BFR) loess, consolidated undrained (CU) triaxial tests were conducted to explore the impacts of water content (w), fiber length (FL), fiber content (FC) and cell pressure (σ3) on the shear strength. According to the results, the shear strength model was established taken into account the impacts of FL, FC, and fiber diameter (d). The results showed that the peak strength of BFR soils enhanced as FL, FC, and σ3 increasing, whereas it decreased with increasing of w. Compared to unreinforced soil, the peak strength of BFR loess improved 64.60% when FC was 0.2% and FL was 16 mm. The optimum reinforcement condition for experimental loess was that of FL was 16 mm and FC was 0.8%. The reinforcing mechanism of fibers was divided into a single tensile effect and spatial mesh effect. The experimental and calculated results agreed well, which suggested the model is suitable for predicting the shear strength of BFR loess. The research results can offer a guideline for the application of BFR loess in the subgrade and slope engineering.

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Resistivity responses of sodium sulfate and sodium chloride-type loess under different water and salinity conditions

Sun

Yan

et al. 2023

Environ Sci Pollut Res

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The influence of salt contents on the compressibility of remolded loess soils

Cited by 13 publications

References 35 publications

A new index to measure the uniformity of remolded loess

A new index to measure the uniformity of remolded loess

Shear strength characteristics of basalt fiber-reinforced loess

Resistivity responses of sodium sulfate and sodium chloride-type loess under different water and salinity conditions

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