Evaluation of curing method and mix design of a moisture activated polymer for sand stabilization

Rezaeimalek, Sepehr; Huang, Jie; Bin-Shafique, Sazzad

doi:10.1016/j.conbuildmat.2017.04.093

Cited by 67 publications

(26 citation statements)

References 21 publications

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“…Resin organic polymer with a macromolecule has been also widely used as soil stabilizer to improve the sandy soil [16][17][18][19][20][21][22][23][24][25][26]. Yang et al [16] studied the effects of aging tests on a novel chemical sand-fixing agent, namely, polyaspartic acid resin.…”

Section: Introductionmentioning

confidence: 99%

“…Latifi et al [19] studied the effectiveness of xanthan gum used for soil ecological reinforcement. Furthermore, other types of organic polymers such as polyacrylamides, acrylic polymer, and methylene diphenyl diisocyanate are also used to reinforce the sand [20][21][22][23]. These organic polymers can fill up void spaces and produce physicochemical bonds to enwrap the sand particles to change the loose structure [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…C The cost of PSS is lower than other inorganic materials. PSS has been used to improve the engineering mechanics properties of soil effectively in previous researches [20][21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Unconfined Compressive Strength of Organic Polymer Reinforced Sand

Liu

Feng

Wang

et al. 2018

International Journal of Polymer Science

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The natural sand is loose in structure with a small cohesive force. Organic polymer can be used to reinforce this sand. To assess the effectiveness of organic polymer as soil stabilizer (PSS), a series of unconfined compressive strength tests have been performed on reinforced sand. The focus of this study was to determine a curing method and a mix design to stabilize sand. The curing time, PSS concentration, and sand density were considered as variables in this study. The reinforcement mechanism was analyzed with images of scanning electron microscope (SEM). The results indicated that the strength of stabilized sand increased with the increase in the curing time, concentration, and sand density. The strength plateaus are at about curing time of 48 h. The UCS of samples with density of 1.4 g/cm3 at 10%, 20%, 30%, 40%, and 50% PSS concentration are 62.34 kPa, 120.83 kPa, 169.22 kPa, 201.94 kPa, and 245.28 kPa, respectively. The UCS of samples with PSS concentration of 30% at 1.4 g/cm3, 1.5 g/cm3, and 1.6 g/cm3 density are 169.22 kPa, 238.6 kPa 5, and 281.69 kPa, respectively. The chemical reaction between PSS and sand particle is at its microlevel, which improves the sand strength by bonding its particles together and filling the pore spaces. In comparison with the traditional reinforcement methods, PSS has the advantages of time saving, lower cost, and better environment protection. The research results can be useful for practical engineering applications, especially for reinforcement of foundation, embankment, and landfill.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Experimental Study on Unconfined Compressive Strength of Organic Polymer Reinforced Sand

Liu

Feng

Wang

et al. 2018

International Journal of Polymer Science

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“…Polymer has gained increasing attention for soil reinforcement (i.e., improving soil poor performances such as cohesion and ductility) in recent years [ 1 , 2 , 3 ] because of its excellent characteristics in terms of efficient performance, better sustainability, providing a clean and healthy environment, and ease of operation [ 4 , 5 , 6 ]. The mechanism of polymer reinforcement soil is reported whereby the polymer is strongly absorbed on the surface of soil grains via physio-chemical force, and subsequently enwraps grains and interlinks them together by their molecules uncoiling [ 7 , 8 ], which in turn enhances soil stability.…”

Section: Introductionmentioning

confidence: 99%

Desiccation Cracking Behavior of Polyurethane and Polyacrylamide Admixed Clayey Soils

Bai

Jin

et al. 2020

Polymers

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There has been a growing interest in polymer applied for soil reinforcement in recent years. However, there little attention has been paid to the effects of polymer on soil cracking behavior, and cracks significantly change soil strength and hydraulic properties and alter reinforcement effectiveness. This study investigated the desiccation cracking behavior of polyurethane (PU) and polyacrylamide (PAM) admixed clayey soils with different polymer concentrations by performing desiccation cracking tests. Scanning electron microscope (SEM) observation was also carried out to obtain the internal structure of these soils. The results show that PU and PAM addition both prolonged the initial evaporation stage, accelerated later evaporation processes, and the effects were related to polymer concentration. Final cracks morphology analyses show that PAM addition slightly reduced the cracking and crushing degree and kept the soil relatively intact, while PU addition slightly enhanced the cracking and crushing degree of soil. In addition, PU and PAM addition both increased the width and length of cracks. The scanning electron microscopy (SEM) analyses show that the effects of polymer on soil evaporation and cracking could be concluded as: (1) storing water in voids, (2) influencing water immigration channel, (3) providing space for soil shrinkage, and (4) enhancing the connection between aggregates, which did not fully come into play because of the existence of hydrogel form. These achievements provide a certain basis for the research of desiccation cracking behavior of polymer treated soil and make significant sense for the safe and effective running of related projects.

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“…It has attracted the attention of many scholars and there are a number of important results published. Rezaeimalek et al [18] studied the effect of a moisture-activated liquid polymer from the generic family of methylene diphenyl diisocyanates (MDI) on the strength of sandy soil through laboratory experiments. Hong and Lee [19] studied a kind of environment-friendly polymer called potassium polyacrylate to promote the growth of coastal vegetation, thereby reducing the cost of coastal erosion protection.…”

Section: Introductionmentioning

confidence: 99%

Improvement Effect of Water-Based Organic Polymer on the Strength Properties of Fiber Glass Reinforced Sand

et al. 2018

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The mechanical properties of sandy soil can be effectively improved by the incorporation of water-based polymer and glass fibers. In order to study the reinforcement effects of a type of water-based organic polymer and fiber glass on sand, three strength tests (unconfined compression test, direct shear test and tensile test) and scanning electron microscopy were carried out. A series of polymer content, fiber content and dry density were selected for the tests. The results revealed that the composite reinforcement of water-based organic polymer and fiber glass can improve the strength. With an increase in polymer content and fiber content, the unconfined compression strength, the cohesion, and the tensile strength increase. The internal friction angles maintain a relatively stable state. All three strength properties increase with an increase in dry density. The results can be considered as the reference for sand reinforced engineering.

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Evaluation of curing method and mix design of a moisture activated polymer for sand stabilization

Cited by 67 publications

References 21 publications

Experimental Study on Unconfined Compressive Strength of Organic Polymer Reinforced Sand

Experimental Study on Unconfined Compressive Strength of Organic Polymer Reinforced Sand

Desiccation Cracking Behavior of Polyurethane and Polyacrylamide Admixed Clayey Soils

Improvement Effect of Water-Based Organic Polymer on the Strength Properties of Fiber Glass Reinforced Sand

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