- Title
- Improved shear strength performance of compacted rubberized clays treated with sodium alginate biopolymer
- Creator
- Soltani, Amin; Raeesi, Ramin; Taheri, Abbas; Deng, An; Mirzababaei, Mehdi
- Date
- 2021
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/176090
- Identifier
- vital:15082
- Identifier
-
https://doi.org/10.3390/polym13050764
- Identifier
- ISBN:2073-4360 (ISSN)
- Abstract
- This study examines the potential use of sodium alginate (SA) biopolymer as an environmentally sustainable agent for the stabilization of rubberized soil blends prepared using a high plasticity clay soil and tire-derived ground rubber (GR). The experimental program consisted of uniaxial compression and scanning electron microscopy (SEM) tests; the former was performed on three soil–GR blends (with GR-to-soil mass ratios of 0%, 5% and 10%) compacted (and cured for 1, 4, 7 and 14 d) employing distilled water and three SA solutions—prepared at SA-to-water (mass-tovolume) dosage ratios of 5, 10 and 15 g/L—as the compaction liquid. For any given GR content, the greater the SA dosage and/or the longer the curing duration, the higher the uniaxial compressive strength (UCS), with only minor added benefits beyond seven days of curing. This behaviour was attributed to the formation and propagation of so-called “cationic bridges” (developed as a result of a “Ca2+/Mg2+
- Publisher
- MDPI AG
- Relation
- Polymers Vol. 13, no. 5 (2021), p. 1-21
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- https://creativecommons.org/licenses/by/4.0/
- Rights
- Copyright: © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license.
- Rights
- Open Access
- Subject
- 03 Chemical Sciences; 09 Engineering; Cationic bridging; Clay soil; Curing duration; Ground rubber; Scanning electron microscopy; Sodium alginate; Uniaxial compressive strength
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