Research on the Dynamic Mechanical Properties and Energy Dissipation of Expansive Soil Stabilized by Fly Ash and Lime

Joint Authors

Li, Dongwei
Zhou, Sheng-quan
Zhou, Da-wei
Zhang, Yong-fei
Wang, Wei-jian

Source

Advances in Materials Science and Engineering

Issue

Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-13, 13 p.

Publisher

Hindawi Publishing Corporation

Publication Date

2019-12-06

Country of Publication

Egypt

No. of Pages

13

Abstract EN

To probe into the dynamic mechanical properties of expansive soil stabilized by fly ash and lime under impact load, the split-Hopkinson pressure bar (SHPB) test was carried out in this study.

An analysis was made on the dynamic mechanical property and final fracture morphology of stabilized soil, and the failure mechanism was also explored from the perspective of energy dissipation.

According to the test results, under the impact pressure of 0.2 MPa, plain soil and pure fly ash-stabilized soil exhibit strong plasticity.

After the addition of lime, the stabilized soil shows obvious brittle failure.

The dynamic compressive strength and absorbed energy of stabilized soil first increase and then decrease with the change of mix proportions.

Both the dynamic compressive strength and the absorbed energy reach the peak value at the content of 20% fly ash and 5% lime (20% F + 5% L).

In the process of the test, most of the incident energy is reflected back to the incident bar.

The absorbed energy of stabilized soil increases linearly with the rise of dynamic compressive strength, while the absorbed energy is negatively correlated with the fractal dimension.

The fractal dimension of pore morphology of the plain soil is lower than that of the fly ash-lime combined stabilized soil when it comes to the two different magnification ratios.

The test results indicate that the modifier content of 20% F + 5% L can significantly improve the dynamic mechanical properties of the expansive soil.

American Psychological Association (APA)

Zhou, Sheng-quan& Zhou, Da-wei& Zhang, Yong-fei& Wang, Wei-jian& Li, Dongwei. 2019. Research on the Dynamic Mechanical Properties and Energy Dissipation of Expansive Soil Stabilized by Fly Ash and Lime. Advances in Materials Science and Engineering،Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1120315

Modern Language Association (MLA)

Zhou, Sheng-quan…[et al.]. Research on the Dynamic Mechanical Properties and Energy Dissipation of Expansive Soil Stabilized by Fly Ash and Lime. Advances in Materials Science and Engineering No. 2019 (2019), pp.1-13.
https://search.emarefa.net/detail/BIM-1120315

American Medical Association (AMA)

Zhou, Sheng-quan& Zhou, Da-wei& Zhang, Yong-fei& Wang, Wei-jian& Li, Dongwei. Research on the Dynamic Mechanical Properties and Energy Dissipation of Expansive Soil Stabilized by Fly Ash and Lime. Advances in Materials Science and Engineering. 2019. Vol. 2019, no. 2019, pp.1-13.
https://search.emarefa.net/detail/BIM-1120315

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references

Record ID

BIM-1120315