Effects of the Preparation Conditions and Reinforcement Mechanism of Polyvinyl Acetate Soil Stabilizer

Bu, Fan; Liu, Jin; Bai, Yaocai; Kanungo, Debi Prasanna; Song, Zezhuo; Kong, Fanxuan; Pan, Cheng

doi:10.3390/polym11030506

Cited by 29 publications

(11 citation statements)

References 32 publications

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“…Also Polyvinyl Acetate (PVAc) was also applied as another stabilizer in the study. Polyvinyl acetate is synthesized by the polymerization reaction of polyvinyl alcohol and vinyl acetate in the presence of per sulfate as a free radical initiator in the reaction kettle commonly used for polymerization (Bu et al, 2019). Commercially available PVAc was used in this study.…”

Section: Methodsmentioning

confidence: 99%

Effect of Stabilization on Failure Susceptibility of Oshogbo-Iwo Road in South-Western Nigeria

Oluyemi-Ayibiowu¹,

Omomomi²,

Fadugba³

2020

JCEU

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The research evaluated the failure susceptibility of biopolymers (Guar Gum, Xanthan Gum, Bentonite) and polyvinyl acetate (PVAc) stabilized soil samples from three failed locations along Oshogbo – Iwo Road’s using the TDRAMS mathematical model formulated by Aderinola et al., (2015). The stabilizers were added to the soils in concentrations of (0.25-2) % Biopolymers, (1-3) % Bentonite and 2% PVAc. The samples were classified according to AASHTO as A-5 (slty-sand) and ML group (inorganic silts, sfine sands with low plasticity) based on USCS classification system. Geotechnical tests carried out on both natural untreated and treated samples showed that the natural soil samples gave OMC values of between (11.7-14.97) %, MDD (1644-1453.6) Kg/m3, and soaked CBR (2-6) %. 1% Guar gum, 1 % Xanthan gum, 3% Bentonite and 2% Poly vinyl Acetate were deduced to be optimal mixes for improved strength. However, Guar gum was observed to be the best stabilizer. With the TDRAMS model, 1% Guar gum reduced the failure susceptibility indices of the road by 11.02 % (i.e. from 127 to 113). However, for maximum benefits to be achieved from the stabilization, other factors like provision of good drainage facilities, adequate road sections etc. must be provided. This will help in improving the strength of the subgrade soils and overall durability of the road.

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Section: Methodsmentioning

confidence: 99%

Effect of Stabilization on Failure Susceptibility of Oshogbo-Iwo Road in South-Western Nigeria

Oluyemi-Ayibiowu¹,

Omomomi²,

Fadugba³

2020

JCEU

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“…The gaps between the particles adsorbed, wrapped, and bound soil particles to form an overall three-dimensional spatial network structure, which was more stable. This alteration also reduced the large and medium pores and the total pore area, which further improved the soil stability (Bu et al, 2019). When CLPs were added to the soil, the gel formed by its curing was filled with particles, altering the microstructure of the soil.…”

Section: Stabilization Mechanism Of Solidified Loessmentioning

confidence: 97%

A Cross-Linked Polymer Soil Stabilizer for Hillslope Conservation on the Loess Plateau

et al. 2021

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The soil of the Loess Plateau is highly susceptible to erosion due to its distinct loess structure with poor water stability and disintegrates easily. Previous research has focused on improving soil strength without considering stability and ecological performance. Comprehensive improvements may be achieved by cross-linked polymers (CLPs), but their effect on loess structure remains unclear. In the present study, we investigate CLPs as a new organic soil stabilizer to improve soil aggregate stability. To determine the effect of CLPs on the stabilization of loess, a series of indoor tests was conducted to assess unconfined compressive strength, water stability, soil-water characteristics, and plant height. The stabilization mechanism was analyzed by comparing the microstructure, mineral composition, and features of functional groups of loess before and after treatment. The results showed that, compared with untreated loess, the unconfined compressive strength and anti-disintegration property of treated loess were significantly increased. The water retention capacity was improved, and the germination rate and growth of plants were promoted. Microscopic analysis showed that the use of CLPs did form new minerals in the loess or change the functional groups, rather, CLPs improved the microstructure, reduced the total volume of pores, and increased the degree of soil compaction. Field tests showed that the erosion of loess hillsides was effectively controlled by CLPs. Under the same erosive conditions, the slope surface treated with CLPs was more intact than the untreated slope surface. Our findings provide new strategies regarding the application of CLPs as soil stabilizers to control loess erosion and promote vegetation restoration.

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“…These samples resulted in a consistent increase in resistance to pressure when the peaks ranges from~11,000 N (20% MK) tõ 25,000 N (30% MK). Just for comparison, we tested also the PVA as soil stabilizer, which has been used extensively in soil stabilization [22]. The PVA results after a curing time of 28 days were up to 4200 N. The drying time until significant strength is reached is an important factor when there is a need to stabilize an unpaved road.…”

Section: Controlmentioning

confidence: 99%

A Clay-Based Geopolymer in Loess Soil Stabilization

Hanegbi

Katra

2020

Applied Sciences

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Soil erosion has environmental and socioeconomic significances. Loess soils cover about 10% of the global land area. Most of these soils are subjected to increased land uses such as unpaved roads, which increase soil destruction and dust emission to the atmosphere. There is a significant interest in applications for dust control and soil stabilization. Application of geopolymers may significantly reduce environmental impacts. This study examines the use of a metakaolin-based geopolymer for dust control and soil stabilization in a semi-arid loess soil. The application of the geopolymer for dust control in comparison with common products (brine, bitumen, polyvinyl acetate-PVA) resulted in no dust emission. As a soil stabilizer, the geopolymer tested in this study provides remarkably good results in the tensile test. The most successful composition of the geopolymer, which is activation solution of sodium silicate and sodium hydroxide (NaOH) together with an addition of 30% metakaolin, obtained soil strength of 23,900 N after 28 days. The attempt to replace NaOH with lime (CaO) in the activation solution was far inferior to the original composition. There is a strong potential to develop natural soil stabilizers from a mineral base that even surpass their capabilities over existing synthetic stabilizers.

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Effects of the Preparation Conditions and Reinforcement Mechanism of Polyvinyl Acetate Soil Stabilizer

Cited by 29 publications

References 32 publications

Effect of Stabilization on Failure Susceptibility of Oshogbo-Iwo Road in South-Western Nigeria

Effect of Stabilization on Failure Susceptibility of Oshogbo-Iwo Road in South-Western Nigeria

A Cross-Linked Polymer Soil Stabilizer for Hillslope Conservation on the Loess Plateau

A Clay-Based Geopolymer in Loess Soil Stabilization

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