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STRENTH AND DEFORMATION OF REINFORCED SOILS SUBJECT TO REPEATED LOADS

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Last updated: 13 Dec 2022

Subjects

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Tags

RL-CBR tests
strength enhancement
reinforced soils
plastic deformation
elastic deformation
STRENTH AND DEFORMATION OF REINFORCED SOILS SUBJECT TO REPEATED LOADS
ICASGE'23

Abstract

In the present study, laboratory tests were performed to investigate the load-penetration behavior of unreinforced and reinforced granular layer overlying soft subgrade soils under the effect of repeated loading conditions. Four series of experimentation were conducted using Repeated Loading California Bearing Ratio (RL-CBR) to investigate the effects of i. thickness of granular layer, ii. adding one reinforcement layer at different locations within the granular layer, iii. number of reinforcement layers and iv. number of repeated load cycles. The experimental results showed that coupled use of granular material and reinforcement layers increase remarkably the load carrying capacity of soft subgrade soils. The highest degree of improvement was recorded when the reinforcement layer was located within the bottom third of the granular layer. Under repeated loading conditions, the plastic and total deformations of reinforced soils increased significantly whereas a decreased elastic deformation was recorded. At the same magnitude of repeated loading, the total deformation of reinforced samples was considerably small compared with unreinforced samples. Also, with increasing number of reinforcement layers, enormous cycles of loading and unloading could be applied without experiencing excessive deformation or loss of bearing resistance. Finally, addition of replacement sand layer with reinforcement result in a reduction in the determined equivalent modulus and enhancement of secant modulus.

Keywords

RL-CBR tests, strength enhancement, reinforced soils, plastic deformation, elastic deformation

Volume

ICASGE2017

Issue Date

1 Jan 2017

Publish Date

29 May 2022

Link

https://icasge.conferences.ekb.eg/article_1542.html

Order

271

Publication Type

Conference

Publication Title

ICASGE'23

Publication Link

https://icasge.conferences.ekb.eg/

Details

Type

Article

Locale

en

Created At

13 Dec 2022