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Effect of Zeolitic Tuff on Strength, Resilient Modulus, and Permanent Strain of Lime-Stabilized Expansive Subgrade Soil.
- Source :
-
Journal of Materials in Civil Engineering . May2023, Vol. 35 Issue 5, p1-12. 12p. - Publication Year :
- 2023
-
Abstract
- The present work aims to evaluate expansive soil stabilization using different additives. Twenty soil mixtures consisting of 10%, 20%, 25%, and 30% zeolitic tuff (ZT) with 2%, 4%, and 6% lime in various combinations were used to stabilize the soil for pavement subbase application. A comprehensive test program, including Atterberg's limits, compaction, unconfined compression strength (UCS), California Bearing Ratio (CBR), resilient modulus, and permanent deformation, was performed on natural and stabilized soil specimens. Scanning electron microscopy (SEM) supplied with energy-dispersive X-ray spectroscopy (SEM/EDX) was used to confirm the study findings. Adding ZT increases the availability of the silica and alumina needed for the pozzolanic reaction; test results revealed that adding ZT increases the maximum dry unit weight, CBR, UCS, resilient modulus, decreases plasticity, and permanent deformation. As such, ZT can improve the physical and mechanical properties of lime-stabilized soil as a pavement's subgrade and subbase layers. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 08991561
- Volume :
- 35
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Materials in Civil Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 162430383
- Full Text :
- https://doi.org/10.1061/(ASCE)MT.1943-5533.0004710