Applicability of Utilizing Stabilized Native Soil as a Subbase Course in Flexible Pavement

Pai, R. R.; Patel, Sankita J.; Bakare, M. D.

doi:10.1007/s40098-020-00432-4

Cited by 13 publications

(6 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The GGBS used in this study was collected from MDC Sungai Pentani Company, Malaysia. It was chosen to reduce the rate of ettringite formation through the provision of more Al and Si, which react with Ca 2+ to form complex cementing gels [ 10 , 35 , 36 ]. The denser structure and lower calcium ion content of GGBS should contribute to superior sulphate resistance [ 8 , 28 , 45 ].…”

Section: Methodsmentioning

confidence: 99%

“…The alumina and silica contents of GGBS can quickly react with the calcium content in soil to form a cementitious gel, thereby reducing or preventing ettringite formation [ 8 , 28 , 34 ]. GGBS can also reduce water availability and permeability through the formation of a denser cementitious matrix, which improves resistance to both external and internal sulphate attacks [ 28 , 35 , 36 ].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Novel Approach to the Treatment of Gypseous Soil-Induced Ettringite Using Blends of Non-Calcium-Based Stabilizer, Ground Granulated Blast-Furnace Slag, and Metakaolin

2021

View full text Add to dashboard Cite

Gypseous soil is one type of expansive soil that contains a sufficient amount of sulphate. Cement and lime are the most common methods of stabilizing expansive soil, but the problem is that lime-treated gypseous soil normally fails in terms of durability due to the formation of ettringite, a highly deleterious compound. Moisture ingress causes a significant swelling of ettringite crystals, thereby causing considerable damage to structures and pavements. This study investigated the suitability of various materials (nano–Mg oxide (M), metakaolin (MK), and ground granulated blast-furnace slag (GGBS)) for the stabilization of gypseous soil. The results showed soil samples treated with 20% M-MK, M-GGBS, and M-GGBS-MK to exhibit lower swelling rates (<0.01% change in volume) compared to those treated with 10% and 20% of lime after 90 days of curing. However, soil samples stabilized with 10% and 20% binder of [(M-MK), (M-GGBS), and (M-GGBS-MK)] exhibited higher strengths after 90 days of soaking (ranging from 0.96–12.8 MPa) compared to those stabilized with 10% and 20% lime. From the morphology studies, the SEM and EDX analysis evidenced no formation of ettringite in the samples stabilized with M-MK-, M-GGBS-, and M-GGBS-MK. These results demonstrate the suitability of M-MK, M-GGBS, and M-GGBS-MK as effective agents for the stabilization of gypseous soil.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Novel Approach to the Treatment of Gypseous Soil-Induced Ettringite Using Blends of Non-Calcium-Based Stabilizer, Ground Granulated Blast-Furnace Slag, and Metakaolin

2021

View full text Add to dashboard Cite

show abstract

“…Soils stabilized by binders are better suitable for the construction of road pavement and as a support layer for basement foundations of associated road infrastructure (Chen, 1988;Etim et al, 2022;Noolu et al, 2022). There are many examples on soil stabilization with various stabilizing agents: cement (Peng and He, 2009; Lindh and Lemenkova, 2022a, 2021b;), lime (Chitragar et al, 2021;Obuzor et al, 2012), fly ash (Mishra, 2012;Chethan and Shankar, 2021), CKD (Sharo et al, 2021;Lindh and Lemenkova, 2021a;Jimoh et al, 2018), slag (Wang et al, 2020;Lindh and Lemenkova, 2022c;Pai et al, 2020). Binders improve physical and mechanical properties of soil: strength, stiffness, porosity, permeability and compactness, which is crucial for road construction.…”

Section: Introductionmentioning

confidence: 99%

Laboratory Experiments on Soil Stabilization to Enhance Strength Parameters for Road Pavement

Lindh

Lemenkova

2023

Transport and Telecommunication Journal

View full text Add to dashboard Cite

Clay soils can cause significant distress in road construction due to their low strength. Stabilizing such soil improve with binder agents prior to the geotechnical works can significantly its performance and ensure safety and stability of roads while exploitation. This research envisaged the use of five different binders (lime, energy fly ash, bio fly ash, slag, cement) as an additive stabilizing agents to improve the strength parameters of soil as required in engineering industry standards. The variations of strength was assessed using measurements of P-wave velocity of the elastic waves propagating through soil specimens stabilized by different combination of binders. Measurements were performed on 28th day of soil treatment. The best effects of added binders were noted in the following combinations: cement / energy fly ash / bio fly ash (P-waves >3100 m/s), followed by combination lime / energy fly ash / GGBFS (P-waves >2800 m/s) and cement / lime / energy fly ash (P-waves >2700 m/s). Adding lime is effective due to its fixation and chemical bond with particles. The study contributes to the industrial tests on soil strength for constructing roadbed.

show abstract

“…Sustainable embankment materials are desired globally by geotechnical experts from durability, cost-efectiveness, and optimization perspectives for civil engineering infrastructures [1][2][3][4][5][6][7][8][9][10]. Urbanization around the world is going on fast-track [11] due to which the problematic soils sites are also in demand for soils improvement (stabilization).…”

Section: Introductionmentioning

confidence: 99%

Micro to Nanolevel Stabilization of Expansive Clay Using Agro-Wastes

Munawar

Khan

Rehman

et al. 2023

Advances in Civil Engineering

View full text Add to dashboard Cite

The circular economy encourages the production and consumption of sustainable embankment geomaterials and their blends utilizing recycled waste materials in roads, railway tracks, airfields, and underground structures. Geomaterials comprising high-plastic soft expansive clay pose excessive settlement during cyclic traffic/railway/airfield loading resulting in uneven geometry of overlying layers. This paper demonstrates multiobjective optimized improvement of expansive clay (C) geotechnical characteristics by cost-effective agro-wastes additives at microlevel (by 3% to 12% rice husk ash, i.e., RHA), nanolevel (by 0.6% to 1.5% rice husk derived green nano-SiO2, i.e., NS), and synergistic micro to nanolevel (NS-RHA). The swell potential, resilient modulus (MR), initial elastic modulus (Es), unconfined compressive strength (UCT), and California bearing ratio (CBR) of C and its blends were determined. The chemical characterization of C and its blends were conducted through Fourier transform infrared spectroscopy (FTIR) and optical microscopic tests. The outcome of this study depicted that the cost ratio for the optimized composite, i.e., (1.2% NS-9% RHA)/(9% RHA) is 1.22 whereas stiffness ratio MR (NS-RHA)/MR(RHA) and Es (NS-RHA)/Es(RHA) and strength ratio UCT(NS-RHA)/UCT(RHA) and CBR(NS-RHA)/CBR(RHA) were found to be 2.0, 1.64, 2.17, and 2.82, respectively. FTIR revealed the chemical compatibility between C, RHA, & NS from durability perspective. Cost-stiffness results of this study can be applied by geotechnical experts to economize the green stabilization of C by use of agro-waste for sustainable development.

show abstract

Applicability of Utilizing Stabilized Native Soil as a Subbase Course in Flexible Pavement

Cited by 13 publications

References 22 publications

Novel Approach to the Treatment of Gypseous Soil-Induced Ettringite Using Blends of Non-Calcium-Based Stabilizer, Ground Granulated Blast-Furnace Slag, and Metakaolin

Novel Approach to the Treatment of Gypseous Soil-Induced Ettringite Using Blends of Non-Calcium-Based Stabilizer, Ground Granulated Blast-Furnace Slag, and Metakaolin

Laboratory Experiments on Soil Stabilization to Enhance Strength Parameters for Road Pavement

Micro to Nanolevel Stabilization of Expansive Clay Using Agro-Wastes

Contact Info

Product

Resources

About