Engineering properties of soil stabilized with cement and fly ash for sustainable road construction

Phan, Vu To Anh; Nguyen, Duc-Trong

doi:10.5829/ije.2021.34.12c.12

Cited by 14 publications

(17 citation statements)

References 14 publications

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“…Previous researchers investigate on any possible techniques or practices to enhance strength properties of peat soils. 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].…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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

2022

IJE

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“…Various stabilization methods can be used to change soil properties such as strength, stiffness, *Corresponding Author Institutional Email: m.hashemi@eng.uk.ac.ir (M. Hashemi) compressibility, swelling sensitivity to water, and volume change behavior. Thermal and electrokinetic methods may also be combined with additives to change soil grain and density [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Heat on the Settlement Properties of Cement-stabilized Clay Soil

2022

IJE

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Clay soil may be subjected to heat in various applications, such as nuclear waste burial sites and high voltage transmission lines. The impact of heat on clay soil's physical and mechanical properties has been explored in previous studies. However, previous studies have mainly focused on the mechanical properties of clay soil without stabilizers, and the effect of heat on the properties of the stabilized clay soil is scarcely studied. The present paper has analyzed and studied the combined effects of heat and cement on the settlement properties of kaolinite clay soil. To conduct the study, kaolinite clay mixed with various degrees of cement was exposed to a range of 25 to 600 degrees Celcius. The results showed that the coefficient of consolidation gradually decreased by increasing heat up to the dehydroxylation point. An increase in heat up to 200 degrees Celcius resulted in increasing the coefficient of consolidation in the specimens containing cement. In specimens containing 10 percent of the cement at temperatures higher than 200 degrees Celcius, the coefficient of consolidation in room temperature decreased by 73 percent compared to kaolinite. Moreover, the void ratio increased in kaolinite specimens without cement when subjected to heat up to 400 degrees Celcius. By increasing the heat, the void ratio decreased in specimens containing 10 percent cement.

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“…According to past studies, traditional additives such as cement, lime, fly ash, etc. have been used to stabilize and improve soil engineering behavior and prevent soil settlement [17][18][19][20]. Despite the high useage of cement to stabilize contaminated soils, the results of previous studies showed that the use of cement is limited [21].…”

Section: Introductionmentioning

confidence: 99%

Remediation Trend of Engineering Behavior of Wastewater Contaminated Clay Using Iron Nano Oxide: Experimental Studies

Sistani

Negahdar

Bamoharram

et al. 2022

IJEE

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Soil polluted with urban wastewater due to defect of wastewater disposal and leakage from wastewater channels is a common type of pollution in urban areas which in addition to environmental damage, has significant effects on soil engineering parameters. In present study, effects of municipal wastewater on mechanical behavior of soil and clay microstructure was studied, and then effects of iron oxide nanoparticles on remediation trend of contaminated soil was investigated. To achieve this, unconfined compressive strength (UCS), collapse and SEM analysis tests were performed on contaminated samples containing 20%, 60% and 100% wastewater at 1, 3 and 5 months and also on contaminated soil remidiated with 0.5-4% Iron nano oxide. Results showed that wastewater reduces shear strength of clay and this decreasing trend increases with increasing percentage and contamination duration. UCS of soil contaminated with 100% wastewater decreased by 49% after 5 months of contamination. Also, wastewater in the soil caused to soil collapse after 5 months . SEM images showed the clay structure became clotted after contamination and soil pores increased compared to natural soil. Improvement phase results showed that by addition of Iron nano oxide to contaminated soil, shear strength significantly increased, and optimal percentage of Iron nano oxide was 3% in which UCS increased by 105.2%. By increasing the percentage of Iron nanoxide, intensity of collapse index of contaminated soil decreases. Best case senario, final strain of soil decreases by 43.4% compared to contaminated soil. Therefore, utilizing Iron nanooxide is recommended to improve engineering behavior of contaminated clay.

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Engineering properties of soil stabilized with cement and fly ash for sustainable road construction

Cited by 14 publications

References 14 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

The Effect of Heat on the Settlement Properties of Cement-stabilized Clay Soil

Remediation Trend of Engineering Behavior of Wastewater Contaminated Clay Using Iron Nano Oxide: Experimental Studies

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