Freeze–Thaw Durability of Cement-Stabilized Soil Reinforced with Polypropylene/Basalt Fibers

Sahlabadi, Seyed Hadi; Bayat, Meysam; Mousivand, Mohsen; Saadat, Mohsen

doi:10.1061/(asce)mt.1943-5533.0003905

Cited by 43 publications

(23 citation statements)

References 59 publications

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“…As shown from the results, the UCS values of reinforced samples are always greater than that of peat sample regardless of fibre content and fiber length (L). The reinforced samples exhibited a more ductile behavior with a larger strain corresponding to the peak stress than that of peat sample which is good agreement with the reported data in the literature [9,[47][48][49]. The UCS value of reinforced samples with basalt content of 0.5% is almost independent of fibre length; however, the UCS value of reinforced samples with basalt content of 1% increases slightly with an increase in fibre length.…”

Section: Tests Results and Discussionsupporting

confidence: 90%

“…Various soil improvement techniques such as utilize *Corresponding Author Institutional Email: bayat.m@pci.iaun.ac.ir (M. Bayat) mechanical energy and/or man-made materials have been used to improve the mechanical characteristics of weak or soft soils in practice for many years [4][5][6]. The problems of structures situated on weak or soft deposits are represented by significant settlement, low shear and compressive strength parameters [7][8][9][10][11]. Similar to conventional additive such as cement or lime, natural or synthetic fibres such as cotton, coir, sisal, polypropylene, basalt and polyester may be used to enhance the mechanical characteristics of weak or soft soils [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, a lot of studies proved the beneficial effects of various types of fibres on the mechanical characteristics of reinforced soils [25][26][27][28][29][30][31][32]. Among various types of fibres, Basalt fibre (BF) is a new kind of inorganic, biologically inactive, environmentally friendly fibre which has better physical and mechanical characteristics with more cost-effective than other fibres [9,33]. BF has been a popular material in civil engineering constructions such as soil reinforcement, concrete and asphalt [33][34][35][36][37][38][39][40][41].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Unconfined Compressive Strength Characteristics of Treated Peat Soil with Cement and Basalt Fibre

2022

IJE

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So far many studies have focused on the mechanical behavior of fibre reinforced soils and stabilized soils with conventional chemical stabilizers such as cement and lime; however, very limited researches were conducted on the unconfined compressive strength characteristics of fibre reinforced cement stabilized peat soils. Fibre-reinforcement of a stabilized soil resulted in a significant improvement in the ductility and strength characteristics of weak or soft soils. The main objective of the current study is considering the effects of cement content, fibre content, fibre length and curing time on the unconfined compressive strength (UCS) of peat soil. The study finds that adding basalt fibre or cement causes a remarkable increase in the UCS values of peat soil. The UCS value of the cement-stabilized sample is observed significantly more than basalt fibre-reinforced ones. However, the sample reinforced with basalt fibers showed more ductile behavior compared to the stabilized sample with cement. The results showed that the increase in UCS values of combined basalt fibre and cement inclusions was more than the increase caused by each of them, individually.

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Section: Tests Results and Discussionsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Unconfined Compressive Strength Characteristics of Treated Peat Soil with Cement and Basalt Fibre

2022

IJE

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“…Fibres are often used to improve the ductile behaviour of soil stabilisation [12][13][14]. In bio-cementation, it was found that the inclusion of carbon fibre could increase the production of calcite crystals by 14.3% due to the facility of the bacteria culture to adhere to the fibres [15].…”

Section: Introductionmentioning

confidence: 99%

Bio-Cementation for Improving Soil Thermal Conductivity

2021

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A promising technology for renewable energy is energy piles used to heat and cool buildings. In this research, the effects of bio-cementation via microbially induced calcite precipitation (MICP) using mixed calcium and magnesium sources and the addition of fibres on the thermal conductivity of soil were investigated. Firstly, silica sand specimens were treated with cementation solutions containing different ratios of calcium chloride and magnesium chloride to achieve maximum thermal conductivity improvement. Three treatment cycles were provided, and the corresponding thermal conductivity was measured after each cycle. It was found that using 100% calcium chloride resulted in the highest thermal conductivity. This cementation solution was then used to treat bio-cemented soil samples containing fibres, including polyethylene, steel and glass fibres. The fibre contents used included 0.5%, 1.0% and 1.5% of the dry sand mass. The results show that the glass fibre samples yielded the highest thermal conductivity after three treatment cycles, and SEM imaging was used to support the findings. This research suggests that using MICP as a soil improvement technique can also improve the thermal conductivity of soil surrounding energy piles, which has high potential to effectively improve the efficiency of energy piles.

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“…As a result, significant settling occurs both before and after construction [2,6]. Thus, several treatment approaches using lime [7], basalt fibers [8] and biomineralization [9] have been emphasized and oriented toward the enhancement of "environmental soil treatment" that is ecologically friendly and resource-efficient over previous procedures [10]. In this respect, biomineralization treatment is one of the numerous environmentally friendly and cost-effective soil improvement strategies that may be used to reinforce weak soils without requiring their replacement or the deployment of a special foundation system [7,11].…”

Section: Introductionmentioning

confidence: 99%

Evaluating Biosedimentation for Strength Improvement in Acidic Soil

et al. 2021

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Marine clay soils are problematic soils in the construction industry when they are subjected to construction loads. When these soils are loaded, they lose their structure. This leads to the soil being unable to withstand loads of any magnitude without exhibiting significant, permanent deformations. In order to stabilize the marine soil, new methods for soil improvement were built upon biogrouting by incorporating physical, biological and chemical treatments into the soil. However, the biggest challenge of this method is the bacteria migration through the soil medium. To overcome this issue, the electrokinetic phenomenon can be utilized alongside biogrouting to prevent the bacteria migration. In this regard, the present study applied electrobiogrouting stabilization to investigate the improvement of acidic marine clay soil with a pH of 3.69. To accomplish this, two large-scale physical models with dimensions of 500 × 300 × 1200 mm were fabricated to examine the influence of two different treated distances between the inlet and outlet—450 mm (D45) and 600 mm (D60)—on the stability of the treated soil. It was observed that the shear strength of the treated soil improved significantly. The shear strength at the D45 treated distance increased from 3.65 kPa (untreated soil) to 28.14 kPa (treated soil). However, the strength increased by increasing the treated distance. In addition, compressibility and soil electrical conductivity were reduced significantly, and the Atterberg limits were significantly enhanced from OH to OL. The reasons for the enhancement of treated soil were the formation of CaCO3, which filled the soil voids, and that the water content was reduced. To address issues with marine clay soil, this study aims to minimize the high cost of a special foundation system and the use of non-environmentally friendly materials such as calcium-based binders, aside from the reduction of deformations caused by loading. The findings of this study can be used for acidic soils and the improvement of soil’s geotechnical behavior in general.

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Freeze–Thaw Durability of Cement-Stabilized Soil Reinforced with Polypropylene/Basalt Fibers

Cited by 43 publications

References 59 publications

Unconfined Compressive Strength Characteristics of Treated Peat Soil with Cement and Basalt Fibre

Unconfined Compressive Strength Characteristics of Treated Peat Soil with Cement and Basalt Fibre

Bio-Cementation for Improving Soil Thermal Conductivity

Evaluating Biosedimentation for Strength Improvement in Acidic Soil

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