Sustainable Stabilization of Compacted Clay Using Sodium Alginate for Subgrade Application

Torfi, Saeid; Khayat, Navid; Horpibulsuk, Suksun

doi:10.1007/s40891-021-00322-6

Cited by 19 publications

(6 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For dry mixing, biopolymer powder and soil were mixed before adding water. According to Fatehi et al (2021), the wet mixing approach is the superior method, so it was used to achieve higher productivity [ 28 ]. For this purpose, the biopolymer and water solution was prepared.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

The Effects of Particle Size Distribution and Moisture Variation on Mechanical Strength of Biopolymer-Treated Soil

Fatehi

Ong

et al. 2023

Polymers

View full text Add to dashboard Cite

Biopolymers have recently shown great potential to replace traditional binding materials in geotechnical engineering; however, more research is required to reach a deeper understanding of biopolymer-treated soil behavior. The objective of this study was to investigate the most important parameters that affect the behavior of biopolymer-treated soil, including biopolymer content, dehydration time, soil type effect, and durability. Sodium alginate and agar biopolymers were used due to their stability under severe conditions and the reasonable costs to study these parameters. A broad range of soil particle sizes was used to optimize the kaolinite-sand combination. As one of the main concerns in the behavior of biotreated soils, durability was investigated under five cycles of wetting and drying. In addition, a comprehensive microstructural study was performed by FTIR analysis and SEM images, as well as chemical interaction analysis. The results indicated that the optimized biopolymer content was in the range of 0.5–1% (to soil weight) and the dehydration time was 14 days. A soil combination of 25% kaolinite and 75% sand provided the highest compressive strength. Under wetting and drying conditions, biopolymers significantly increased soil resistance against strength reduction and soil mass loss. The results showed that the biopolymers, agar and sodium alginate provided significant soil improvement. The optimum values of different parameters to reach the highest performance were also obtained. In addition, the biopolymers were highly effective in enhancing the durability of the treated soil under wetting and drying conditions. Based on the results, optimal values of the agar and sodium alginate-treated soil for sand and kaolinite are confirmed.

show abstract

Section: Methodsmentioning

confidence: 99%

“…Agar possesses hydrophobicity that excels in solubility and provides rigid textures when forming a gel [ 27 ]. Sodium alginate effectively improved the behavior of coarse and fine-grained soils in terms of shear strength and wind erosion resistance [ 17 , 28 , 29 , 30 ].…”

Section: Introductionmentioning

confidence: 99%

The Effects of Particle Size Distribution and Moisture Variation on Mechanical Strength of Biopolymer-Treated Soil

Fatehi

Ong

et al. 2023

Polymers

View full text Add to dashboard Cite

show abstract

“…The volume of these types of soils increases due to water absorption and decreases due to loss of moisture; therefore, they are known as swelling soils, causing issues in road construction arising from unfavorable technical characteristics [2]. The damages caused by these types of soils are estimated to be billions of dollars annually [3]. Therefore, in cases where it is not possible to avoid the construction of superstructures on these types of soils by changing the route of the road, measures should be taken to reduce the swelling of the soil, and the construction of superstructures on these soils without stabilization should be avoided [4,5].…”

Section: Introductionmentioning

confidence: 99%

Effects of Sodium Nanoalginate and Lime on Swelling Properties of Expansive Soils

Mousavi,

Abdi,

Taheri

2023

Minerals

View full text Add to dashboard Cite

The findings revealed that the addition of nanoalginate and lime had distinct effects on various soil properties. Specifically, the liquid limit (LL) and plastic limit (PL) decreased when sodium nanoalginate and lime were added, while the plasticity index (PI) and shrinkage limit (SL) increased. Furthermore, the soil classification was altered when sodium alginate and lime were introduced to the control soil. Regarding the standard Proctor test, it was observed that adding sodium nanoalginate increased the maximum dry density and reduced the optimal moisture content, whereas lime had the opposite effect by decreasing the maximum dry density and increasing the optimal moisture content. The free swelling and swelling pressure tests indicated that the incorporation of sodium nanoalginate and lime reduced both free swelling and swelling pressure. The most significant reduction was observed in the sample containing 7% sodium nanoalginate and 5% lime. Additionally, the study highlighted the influence of processing time, showing that an increase in the curing time led to a decrease in free swelling and swelling pressure in samples mixed with 3% sodium nanoalginate and lime. The XRD test showed that adding sodium nanoalginate reduced primary minerals, forming SAH, while lime reduced quartz and calcite, creating CSH. Overall, the results suggest that sodium nanoalginate can be a more environmentally friendly alternative to lime for soil stabilization projects.

show abstract

“…For these 11 papers [1][2][3][4][5][6][7][8][9][10][11] in this special issue, we would like to group them according to the ground improvement method being considered and then point out the key issue(s) investigated only in this editorial note. There are four articles dealt with new innovative techniques to increase efficiency of (vacuum) consolidation; four articles studied new technics of soft ground improvement using chemical/cement mixing method; one article studied replacement technique, one article investigated effects of microbial induced calcite precipitation on the strength and modulus of clays, and one article dealt with the site investigation using piezocone test for design of soft ground improvement.…”

mentioning

confidence: 99%

“…Article 7:99 [11] experimentally investigated the displacement field around PVDs during vacuum consolidation using particle image velocimetry (PIV) technology, and suggested that the results can be used to design suitable (or optimum) spacing between adjacent PVDs. (2) Chemical/cement mixing Article 7:82 [1] experimentally studied the effect of sodium alginate additive on reducing swelling potential of compacted clay, and for the soil tested, an optimum amount of additive of 0.75% by dry weight was suggested. Article 7:85 [2] experimentally investigated the method of using fly ash and cement to stabilize clayey sediments of lakes and reservoirs, and the optimized sediment/cement/ fly ash mixtures to be used for road construction were suggested.…”

mentioning

confidence: 99%

Guest Editorial for the Special Issue on “Soft Ground Improvement”

Chai

Bergado

2021

Int. J. of Geosynth. and Ground Eng.

View full text Add to dashboard Cite

Sustainable Stabilization of Compacted Clay Using Sodium Alginate for Subgrade Application

Cited by 19 publications

References 33 publications

The Effects of Particle Size Distribution and Moisture Variation on Mechanical Strength of Biopolymer-Treated Soil

The Effects of Particle Size Distribution and Moisture Variation on Mechanical Strength of Biopolymer-Treated Soil

Effects of Sodium Nanoalginate and Lime on Swelling Properties of Expansive Soils

Guest Editorial for the Special Issue on “Soft Ground Improvement”

Contact Info

Product

Resources

About