Curing Method and Mix Design Evaluation of a Styrene-Acrylic Based Liquid Polymer for Sand and Clay Stabilization

Rezaeimalek, Sepehr; Nasouri, Reza; Huang, Jie

doi:10.1061/(asce)mt.1943-5533.0002396

Cited by 22 publications

(9 citation statements)

References 29 publications

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“…The maximum increase in OMC was obtained for 1.5% and 2% concentration of β-glucan-treated soil. The hydrophilic biopolymer absorbs water from voids of the kaolin and affects the double layer of the clay, and, thus, a greater quantity of water is required by the treated clay [ 24 , 34 ]. As the dosage of β-glucan increased, the quantity of water absorbed by the β-glucan was also greater.…”

Section: Resultsmentioning

confidence: 99%

“…For geotechnical assessment of clayey soils, a wet mixing process was preferred over dry mixing [ 24 ]. In wet mixing, β-glucan biopolymer powder and water were added at room temperature and sealed for two hours before mixing with kaolin clay [ 24 , 25 ]. The stabilized kaolin, after mixing with β-glucan, was sealed for three hours before testing.…”

Section: Methodsmentioning

confidence: 99%

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β-Glucan as a Sustainable Alternative to Stabilize Pavement Subgrade

Vishweshwaran¹,

Sujatha²

2022

Polymers

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Beta glucan (β-Glucan), a polysaccharide biopolymer, is used to improve the subgrade strength of clayey soils in an attempt to advocate a sustainable, carbon-neutral, and eco-friendly stabilizer. A design thickness catalog was developed for a three-layered flexible pavement using 3D finite element analysis (FEA) and layered elastic analysis. The analyses were performed for β-glucan-treated fine-grained soils with varying traffic intensities based on a mechanistic design philosophy conforming to IRC: 37-2018. Genetic programming (GP) was employed to obtain equations governing the rutting and fatigue failure in pavements. Thirty-nine datasets were used in the determination and analysis of critical strains governing the failure of a flexible pavement. Energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), Zetasizer analysis, and pH tests of the β-glucan-treated soil revealed the mechanism of strength improvement of the fine-grained soils. The savings in cost for a 1 km stretch of the pavement were estimated to be 14.3%.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

β-Glucan as a Sustainable Alternative to Stabilize Pavement Subgrade

Vishweshwaran¹,

Sujatha²

2022

Polymers

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“…The content of bitumen in asphalt granulate is 4.63% of the mass of the mineral part. At present, a rather great interest of researches of cold reclaimed mixes is riveted to modifiers based on epoxy resins [17][18][19][20][21][22][23][24][25][26] and styrene-acrylates [27][28][29][30][31][32].…”

Section: Initial Materials and Experimental Compositions Accepted Formentioning

confidence: 99%

Fatigue resistance of modified cold reclaimed mixes with 100% content of recycled asphalt pavement (RAP)

Zankavich¹,

Khroustalev

Veranko³

et al. 2020

SN Appl. Sci.

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This study is devoted to finding a solution to an important problem of increasing the accuracy of assessing the fatigue stability of composites based on recycled asphalt concrete. Another problem for solving was a selecting optimal and effective ways to improve their physical-mechanical properties during modification by polymers. For experimental work, a new indicator reflecting the strength of elastic structural bonds and the specific number of viscoplastic bonds was used as a criterion for fatigue stability of bituminous-cement composites. As shown by the results of the research, fatigue (cyclic) stability has an increasing trend with the growth of these parameters. As a result of processing data from experimental studies of the structural characteristics of composites, a comparative analysis of the effectiveness of modification of cold recycled mixes by styrene acrylate and epoxy resin was performed. It was established that the composites modified with styrene acrylates have a higher relaxation ability, which is reflected in the increase in the number of cycles to failure when testing for cyclic stability. It is also noted that with an increase in the content of epoxy resin in the composition of mixes, the increase in stiffness occurs much more strongly in comparison with an increase in their relaxation ability. At the same time, the efficiency of modification of cold recycled mixes with epoxy resins is significantly increased with the preliminary preparation of asphalt granulate (RAP), for example, during its plasticization with soy epoxidized oil. This work also allowed us to outline some areas of development of the methodological foundations for assessing the cyclic and fatigue stability of composites based on cold recycled mixes. Keywords Fatigue resistance • Recycled asphalt pavement (RAP) • Modified cold reclaimed mixes • Styrene-acrylic water dispersion • Water dispersion of epoxy resin • Epoxidized soybean oil * Vitali Zankavich,

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“…However, its disadvantages are the long curing time and the complexity of the operation, which makes it unsuitable for use in slope ecological protection projects. Polymer curing agents, as a type of organic materials, have triggered a lot of attention from scholars due to their lower production cost and excellent adhesion properties [ 11 ]. In the process of soil improvement, the high viscosity of polymer curing agent can not only improve the soil structure, enhance the soil strength, and reduce the soil compressibility [ 12 ] but also increase the content of soil agglomerates and improve the water stability of the agglomerates [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Model Test Study on the Enhancement of Ecological Self-Repairing Ability of Surface Slope Soil by New Polymer Composites

Huang

Zhou

Liu

2022

IJERPH

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Plant-based ecological protection is one of the effective methods to improve the stability of slope soils. However, plants need a stable growth environment and water supply. Although it has been demonstrated that polymer materials can effectively enhance the stability and water retention of soils, their improvement mechanism and long-term effects are yet to be clear. In this paper, we use a new polymer composite material (ADNB), an optimized compound of nano-aqueous binder (NAB) and super absorption resin (SAR), to conduct outdoor model tests to study the effects of different ADNB ratios on soil compactness, biochemical properties, and plant growth at longer time scales, and to explore its action law and mechanism of enhancing the ecological self-repairing ability of surface slope soil. The results show that ADNB can effectively improve the soil structure, increase the compactness of the soil, increase the organic matter content, microbial population and available nutrient content in the soil, thus promoting plant growth. The adsorption and agglomeration effect of the NAB in ADNB on soil particles and its degradation in natural environment can be observed by SEM. In summary, ADNB can not only effectively enhance the ecological self-repairing ability of surface slope soil, but also has good environmental friendliness and can be completely degraded under natural conditions without additional adverse effects on soil and environment.

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Curing Method and Mix Design Evaluation of a Styrene-Acrylic Based Liquid Polymer for Sand and Clay Stabilization

Cited by 22 publications

References 29 publications

β-Glucan as a Sustainable Alternative to Stabilize Pavement Subgrade

β-Glucan as a Sustainable Alternative to Stabilize Pavement Subgrade

Fatigue resistance of modified cold reclaimed mixes with 100% content of recycled asphalt pavement (RAP)

Model Test Study on the Enhancement of Ecological Self-Repairing Ability of Surface Slope Soil by New Polymer Composites

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