The effect of water content on shear and compressive behavior of polymeric fiber-reinforced clay

Arabani, Mahyar; Haghsheno, Hamed

doi:10.1007/s42452-020-03568-3

Cited by 8 publications

(3 citation statements)

References 26 publications

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“…Figure 1 shows the stress–strain curves of BFR soil with FL of 4 mm, 8 mm, 12 mm, and 16 mm under 25 kPa σ 3 . The peak deviator stress decreased with increasing w , and the peak strength of BFR loess is higher than that of loess, which consistent with reference 43 . For the unreinforced loess, the peak strength decreased by 31.65% at 13% w compared to 9% w under 4 mm FL .…”

Section: Resultssupporting

confidence: 88%

Shear strength characteristics of basalt fiber-reinforced loess

Chen,

Li,

Liu

et al. 2023

Sci Rep

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Loess owns the characteristics of collapsibility, disintegration and solubility, which pose a challenge to engineering construction. To examine the shear strength of basalt fiber-reinforced (BFR) loess, consolidated undrained (CU) triaxial tests were conducted to explore the impacts of water content (w), fiber length (FL), fiber content (FC) and cell pressure (σ3) on the shear strength. According to the results, the shear strength model was established taken into account the impacts of FL, FC, and fiber diameter (d). The results showed that the peak strength of BFR soils enhanced as FL, FC, and σ3 increasing, whereas it decreased with increasing of w. Compared to unreinforced soil, the peak strength of BFR loess improved 64.60% when FC was 0.2% and FL was 16 mm. The optimum reinforcement condition for experimental loess was that of FL was 16 mm and FC was 0.8%. The reinforcing mechanism of fibers was divided into a single tensile effect and spatial mesh effect. The experimental and calculated results agreed well, which suggested the model is suitable for predicting the shear strength of BFR loess. The research results can offer a guideline for the application of BFR loess in the subgrade and slope engineering.

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Section: Resultssupporting

confidence: 88%

Shear strength characteristics of basalt fiber-reinforced loess

Chen,

Li,

Liu

et al. 2023

Sci Rep

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“…The three compaction paths detailed the above pattern: Path I, or the dry path of optimum, has pores of a bigger size, some of which cannot be entirely filled and bonded with the admixture due to larger pores. Moreover, the amount of water consumed is enough for performing chemical reactions due to the fact that it contains low water content [51]. On the other hand, Path II, or the optimum path, shows that higher water content can help with strength development by allowing for more efficient reactions between the marble powder and clay particles.…”

Section: The Impacts Of Water Content On the Ucsmentioning

confidence: 99%

Laboratory Testing and Analysis of Clay Soil Stabilization Using Waste Marble Powder

2023

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Soil stabilization is a critical step in numerous engineering projects, preventing soil erosion, increasing soil strength, and reducing the risk of subsidence. Due to its inexpensive cost and potential environmental benefits, waste materials, such as waste marble powder (WMP), have been used as additives for soil stabilization in recent years. This study investigates waste marble powder’s effects on unconfined compressive strength (UCS) and clayey soil’s ultrasonic pulse velocity (UPV) at different water contents and curing times, and artificial neural networks (ANNs) are also used to predict the UCS and UPV values based on three input variables (percentage of waste marble dust, curing time, and moisture content). Geo-engineering experiments (Atterberg limits, compaction characteristics, specific gravity, UCS, and UPV) and analytical methods (ANNs) are used. The study results indicate that the soil is high-plasticity clay (CH) using the Unified Soil Classification System (USCS), and adding waste marble powder (WMP) can significantly improve the UCS and UPV of clay soils, especially at optimal water content, curing times of 28 days, and 60% WMP. It is found that the ANN models accurately predict the UCS and UPV values with high correlation coefficients approaching 1. In addition, this study shows that the optimum water content and curing time for stabilized clay soils depend on the grade and amount of waste marble powder utilized. Overall, the study demonstrates the potential of waste marble dust as a soil stabilization additive and the usefulness of ANNs in predicting UCS and UPV values. This study’s results are relevant to engineers and researchers working on soil stabilization projects, such as foundations and backfills. They can contribute to the development of sustainable and cost-effective soil stabilization solutions.

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“…Composite fibers are being used in soil improvement due to the optimum use of characteristics of each fiber. The incorporation of fiber in clay improves ductility and compressive strength of the soil-fiber mixture which is observed as maximum level up to optimum moisture content (OMC) [23,24].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Application of Wool-Banana Bio-Composite Waste Material in Geotechnical Engineering for Enhancement of Elastoplastic Strain and Resilience of Subgrade Expansive Clays

et al. 2022

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Agro-biogenic stabilization of expansive subgrade soils is trending to achieve cost-effective and sustainable geotechnical design to resist distress and settlement during the application of heavy traffic loads. This research presents optimized remediation of expansive clay by addition of proportionate quantities of waste renewable wool-banana (WB) fiber composites for the enhancement of elastoplastic strain (ԐEP), peak strength (Sp), resilient modulus (MR) and California bearing ratio (CBR) of expansive clays. Remolded samples of stabilized and nontreated clay prepared at maximum dry density (γdmax) and optimum moisture content (OMC) were subjected to a series of swell potential, unconfined compressive strength (UCS), resilient modulus (MR) and CBR tests to evaluate swell potential, ԐEP, MR, and CBR parameters. The outcome of this study clearly demonstrates that the optimal WB fiber dosage (i.e., 0.6% wool and 1.2% banana fibers of dry weight of clay) lowers the free swell up to 58% and presents an enhancement of 3.5, 2.7, 3.0 and 4.5-times of ԐEPT, Sp, MR and CBR, respectively. Enhancement in ԐEP is vital for the mitigation of excessive cracking in expansive clays for sustainable subgrades. The ratio of strain relating to the peak strength (ԐPS) to the strain relating to the residual strength (ԐRS), i.e., ԐPS/ԐRS = 2.99 which is highest among all fiber-clay blend depicting the highly ductile clay-fiber mixture. Cost-strength analysis reveals the optimized enhancement of ԐEPT, Sp, MR and CBR in comparison with cost using clay plus 0.6% wool plus 1.2% banana fibers blend which depicts the potential application of this research to economize the stabilization of subgrade clay to achieve green and biogeotechnical engineering goals.

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The effect of water content on shear and compressive behavior of polymeric fiber-reinforced clay

Cited by 8 publications

References 26 publications

Shear strength characteristics of basalt fiber-reinforced loess

Shear strength characteristics of basalt fiber-reinforced loess

Laboratory Testing and Analysis of Clay Soil Stabilization Using Waste Marble Powder

Sustainable Application of Wool-Banana Bio-Composite Waste Material in Geotechnical Engineering for Enhancement of Elastoplastic Strain and Resilience of Subgrade Expansive Clays

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