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Title:

Study on Mechanical Performance and Reinforcement Mechanisms of Geocell-Reinforced Soil

Accession Number:

01900461

Record Type:

Component

Availability:

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Order URL: http://worldcat.org/issn/03611981

Abstract:

A concept for a reinforcement mechanism is presented and analyzed combined with test results to explain the reinforcement effect of a geocell. A series of pull-out and unconfined compression tests were carried out to investigate the effect of various parameters, including water content, compactness, and the number of geocell-reinforced layers, on the mechanical performance of geocell-reinforced soil. The results of the pull-out tests were mutually verified by the formulas for the reinforcement mechanism and demonstrate that the compactness and water content significantly affect the friction coefficient of the geocell–soil interface, which increases as compactness rises and water content falls. Compared with lowering the water content, improving compactness was better for enhancing the frictional properties of the geocell–soil interface; this had the highest increase, at 90%, as compactness rises from 92% to 94%. According to the unconfined compression test results, the unconfined compressive strength of geocell-reinforced soil is raised by higher compactness, more geocell-reinforced layers, and lower water content; this had the highest increase, at 93.1%, as the water content dropped to its optimum, from 19% to 15%. The compactness of filled soil dramatically influences the unconfined compressive strength of unreinforced specimens, which had an increase of 59.6% when compactness rose from 92% to 94%. However, this effect was weakened as more geocell was added to filled soil. As the number of geocell-reinforced layers rose from 0 to 1 under the compactness level of 92%, the increase of ultimate unconfined compressive strength reached 82.6%, higher than in other reinforcement layers.

Supplemental Notes:

Yunsheng Zhu https://orcid.org/0000-0002-7145-5446© National Academy of Sciences: Transportation Research Board 2023.

Language:

English

Authors:

Zhu, Yunsheng

ORCID 0000-0002-7145-5446

Li, Yuanhao
Wang, Kaifeng

ORCID 0000-0002-2298-7411

Peng, Shaolong

Publication Date:

2023

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Publisher: Sage Publications, Incorporated
ISSN: 0361-1981
EISSN: 2169-4052
Serial URL: http://journals.sagepub.com/home/trr

Media Type:

Web

Features:

References (26)

Identifier Terms:

Geocell

Subject Areas:

Geotechnology; Transportation (General)

Files:

TRIS, TRB, ATRI

Created Date:

Nov 21 2023 3:01PM