Study on Strength Behavior of Cement Stabilized Sludge Reinforced With Waste Cornsilk Fiber

Tran, Khiem Quang; Satomi, Tomoaki; Takahashi, Hiroshi

doi:10.21660/2017.39.28994

Cited by 11 publications

(7 citation statements)

References 13 publications

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“…Meanwhile, quicklime is a retarding material whose strength increases slowly after 7 days, and the total strength generally takes 5-10 years to reach a stable value; therefore, the internal friction angle and cohesion C of the quicklime-improved soil increase slowly. Similar observations have been reported while studying the effect of lime on other soils [2,53].…”

Section: Shearing Characteristicssupporting

confidence: 88%

“…[13] (1) The unconfined compressive strength of cement-modified red sandstone increases with the increase in cement content, curing age and compactness. (2) There is an optimal lime content in the strength of lime modified red sandstone. Lime [14] There is optimal lime content to improve the characters of red sandstone residual soil.…”

Section: Additives Reference Findingsmentioning

confidence: 99%

“…Ahmed Mancy Mosa [1] investigated the use of cement kiln dust to improve poor subgrade soil and found that improving poor subgrade soil leads to a reduction in the cost of construction by about USD 25.875 per square meter of pavements. Khiem Quang Tran [2] explored the effects of cornsilk fibers on the mechanical properties of cemented soil by conducting compaction, compression and splitting tension tests, and found that the largest improvements in compressive strength and splitting tensile are 177% and 88%. Similar studies have been reported while studying the effect of additives on other soils (as shown in Table 1).…”

Section: Introductionmentioning

confidence: 99%

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Applicability Study on Modified Argillaceous Slate as Subgrade Filling for High-Speed Railway

Guo

Wei

2022

Applied Sciences

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Modifying weathered argillaceous slate (WAS) to fill the subgrades of high-speed railways not only leads to obvious environmental benefits but also significantly saves natural resources. Previous studies have used several additives together with cement/quicklime. Using cement/quicklime as an additive would also improve the strength of weathered soft rock. Therefore, cement/quicklime can be used effectively as a sustainable solution. To illustrate the feasibility of cement/quicklime in WAS improvement, the mineral components and physical, mechanical and hydraulic characters for cement/quicklime-modified WAS were investigated via laboratory test. The dynamic behaviors were then analyzed by establishing a 3D vertical coupling dynamic model and performing dynamic triaxial tests. After mixing cement/quicklime, the following was proved: (1) The particles were coarsened, the content of kaolinite and amorphous phase increased, and the content of muscovite decreased, resulting in weakened hydrophilicity, reduced plasticity and enhanced water stability; (2) Mechanical and deformation characters were enhanced, reflecting an unconfined compression strength of quicklime/cement-modified soil greater than 0.5 MPa and elastic deformation for the subgrade of less than 0.1 mm; (3) For the quicklime-modified WAS, the dynamic strength was below the allowable value, and the sample disintegrated in water in 2 min, indicating it to be unsuitable for subgrade filling in HSR; (4) For cement-modified WAS, the water stability and dynamic strength were improved greatly, as well as the static strength. The sum of results highlights that 5% cement-modified WAS is recommended for filling subgrades of HSR for comprehensive factors.

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Section: Shearing Characteristicssupporting

confidence: 88%

Section: Additives Reference Findingsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Applicability Study on Modified Argillaceous Slate as Subgrade Filling for High-Speed Railway

Guo

Wei

2022

Applied Sciences

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“…The failure strength value obtained from the UCS test is explained in accordance with the addition of EFB and cement amount and the variative length of EFB with different water content. The previous study explained that the additive amount of the fiber materials, such as paper debris, corn silk, and rice straw [5], and corn silk [6] significantly increased the failure strength. The relationship between additive amount of EFB and cement in water content of 60% is shown in figure 2.…”

Section: The Effect Of the Addition Of Efb Amount To Ucs Testmentioning

confidence: 99%

The effect of Empty Fruit Bunch (EFB) on mechanical properties to cemented sludge by FCSS method

SIMARMATA

Satomi²,

Takahashi³

2023

IOP Conf. Ser.: Earth Environ. Sci.

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A large amount of high-water content sludge is often generated from the landslide phenomenon. The recycling process is necessary to reduce the soil waste and transportation cost. This work demonstrates an experimental scale recycling process by applying fiber-cement stabilized soil (FCSS) method. FCSS method implements the addition of EFB and cement to the sludge for the soil improvement which is expressed in failure strength and hydraulic conductivity. Therefore, the unconfined compression strength (UCS) and permeability test are conducted with a variative amount of EFB, and cement. The water content used in this work is 60 and 100%. Moreover, the effect of EFB length is examined in the UCS test by applying the 10- and 30-mm length. The results show that the increased amount of EFB and cement inclines the failure strength values. As the target value sets to 123 kPa, most mixing conditions in water 60% satisfies the target while the mixing condition with high EFB and cement are above the target in water 100%. In addition, the 30-mm EFB performs better compared to 10-mm. Therefore, the permeability test applies only 30-mm. In contrast, the increased amount of EFB and cement decreases the hydraulic conductivity.

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“…Some scholars have used corn silk fiber, a byproduct of corn, to enhance the strength behavior of colloidal sludge and confirmed that corn silk fiber improves the failure strength, failure strain, ductility, and stiffness. 91 Therefore, on the basis of the inherent characteristics of materials, the scope of raw materials can be expanded to include more types of agricultural and forestry byproducts, thus realizing “waste–waste combination” with local materials. For example, wheat, rice and cotton straw 92,93 are widely available in Chinese farmland, but due to their flammability, 94 their application is greatly limited.…”

Section: Countermeasures and Prospects Of Addressing Problemsmentioning

confidence: 99%

Utilization of silt, sludge, and industrial waste residues in building materials: A review

Hao

Song

Wang

et al. 2022

Journal of Applied Biomaterials & Functional Materials

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To promote the effective utilization of sludge and slag produced in nature and from human activities, this paper summarizes the research progress in the field of building materials on the basis of expounding their classification and characteristics. (1) Sludge and slag include silt, sludge and industrial waste residues. These three materials are mainly composed of SiO2, which can be used to produce building materials after treatment and can also be used as admixtures, including roadbed admixtures. (2) Silt and sludge are widely used in building wall materials and roadbed materials, etc. Industrial waste residues can be used in the production and processing of green concrete and glass-ceramics. (3) In addition to continuing to use existing utilization methods, key treatment technologies and new treatment devices can be further developed according to the characteristics of sludge and slag. Moreover, observations and mechanistic analysis of the microscopic structure of industrial waste residues and research on strong and weak utilization methods based on the performance of building materials can be carried out, and more efficient and energy-saving excitation or activation technologies will be developed. These efforts will eventually lead to the development of functional building materials with excellent performance and environmentally friendly characteristics to achieve the differentiated utilization of silt, sludge, and industrial waste residues and realize the efficient transformation of resources. This paper provides useful insights for the application of sludge and slag in the field of building materials.

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Study on Strength Behavior of Cement Stabilized Sludge Reinforced With Waste Cornsilk Fiber

Cited by 11 publications

References 13 publications

Applicability Study on Modified Argillaceous Slate as Subgrade Filling for High-Speed Railway

Applicability Study on Modified Argillaceous Slate as Subgrade Filling for High-Speed Railway

The effect of Empty Fruit Bunch (EFB) on mechanical properties to cemented sludge by FCSS method

Utilization of silt, sludge, and industrial waste residues in building materials: A review

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