Effect of Fly Ash on Strength and Stiffness Characteristics of Controlled Low-Strength Material in Shear Wave Monitoring

Kim, Sang‐Chul; Kim, Dong-Ju; Byun, Yong-Hoon

doi:10.3390/ma14113022

Cited by 12 publications

(3 citation statements)

References 16 publications

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“…Axial loading was applied on the top of each cylindrical specimen at a strain rate of 1 mm/min up to an axial strain of 5%. All specimens' compressive strength and secant modulus of elasticity were evaluated as suggested in previous studies [45][46][47]. Half of the unconfined compressive strength and the corresponding strain was used to determine the secant modulus of elasticity.…”

Section: Unconfined Compression Testmentioning

confidence: 99%

Soil Stabilization Using Zein Biopolymer

Babatunde

Byun

2023

Sustainability

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The characterization and analysis of the cementation properties of novel biopolymer binders in soils are essential for their potential application in geotechnical engineering. This study investigates the cementation effect of a novel zein biopolymer binder on sandy soils. Soil specimens are mixed with various contents of zein biopolymer ranging from 0 to 5%. The mechanical and microscopic characteristics of the treated specimens are evaluated using unconfined compression tests and scanning electron microscopy, respectively, after curing for 3, 7, and 28 days. The results show a consistent increase in compressive strength and elastic modulus of treated soils with increasing curing periods and biopolymer contents. A small amount (1%) of zein biopolymer increases soil strength and elasticity regardless of gradation. Additionally, the bonding force between the soil–zein biopolymer increases linearly with soil uniformity. Therefore, the application of zein biopolymer can be potentially used as a binder for fine- and coarse-grained soils in geotechnical engineering considering its stabilization and sustainability properties.

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Section: Unconfined Compression Testmentioning

confidence: 99%

Soil Stabilization Using Zein Biopolymer

Babatunde

Byun

2023

Sustainability

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“…For the unconfined compressive tests, cylindrical specimens were prepared and subjected to axial loading at a displacement rate of 1 mm/min and up to a 5% axial strain according to ASTM D2166 [34]. The compressive strength and secant modulus of each specimen were determined from the stress and strain curves as suggested in previous studies [35,36].…”

Section: Unconfined Compressive Testmentioning

confidence: 99%

Effect of Curing Condition and Solvent Content on Mechanical Properties of Zein-Biopolymer-Treated Soil

et al. 2023

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The curing condition and solvent composition of biopolymer binders may impact their efficacy for soil stabilization. This study introduces a novel hydrophobic biopolymer, zein, and investigates the effects of solvent and curing conditions on the mechanical properties of zein-treated soils. The zein biopolymer is used to prepare cohesionless soil with various ethanol contents. Unconfined compressive strength and microscopic tests are used to investigate the treated specimens under two different curing conditions. The mechanical properties of the treated specimens are evaluated in terms of compressive strength and the secant elastic modulus. The experimental results show that the compressive strength and elastic modulus increase with the curing period under both curing conditions. Higher curing temperature improves the compressive strength of biopolymer-treated specimens. The linear relationship between compressive strength and the elastic modulus of zein-treated soils shows higher strength and a lower elastic modulus compared to rock. Furthermore, the zein biopolymer shows significant strength improvement compared to the existing biopolymers, including casein and lignin. Thus, the effects of solvent and curing conditions on the mechanical properties of zein-treated soil should be considered for its application to soil stabilization.

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“…Among the most commonly used incineration industrial by-products, coal fly ash is the most popular SCM, due to its many advantages, which include a glass bead morphological effect, pozzolanic activity, and the microaggregate effect of the very fine beads. Coal fly ash appears in nearly 38% of the literature related to CLSMs [14,15]. Moreover, because incineration ash usually exhibits pozzolanic activity, other types of incineration ash have also been applied as SCMs for CLSM production.…”

Section: Clsm Strengthmentioning

confidence: 99%

Research Progress on Controlled Low-Strength Materials: Metallurgical Waste Slag as Cementitious Materials

Liu

et al. 2022

Materials

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Increasing global cement and steel consumption means that a significant amount of greenhouse gases and metallurgical wastes are discharged every year. Using metallurgical waste as supplementary cementitious materials (SCMs) shows promise as a strategy for reducing greenhouse gas emissions by reducing cement production. This strategy also contributes to the utilization and management of waste resources. Controlled low-strength materials (CLSMs) are a type of backfill material consisting of industrial by-products that do not meet specification requirements. The preparation of CLSMs using metallurgical waste slag as the auxiliary cementing material instead of cement itself is a key feature of the sustainable development of the construction industry. Therefore, this paper reviews the recent research progress on the use of metallurgical waste residues (including blast furnace slag, steel slag, red mud, and copper slag) as SCMs to partially replace cement, as well as the use of alkali-activated metallurgical waste residues as cementitious materials to completely replace cement for the production of CLSMs. The general background information, mechanical features, and properties of pozzolanic metallurgical slag are introduced, and the relationship and mechanism of metallurgical slag on the performance and mechanical properties of CLSMs are analyzed. The analysis and observations in this article offer a new resource for SCM development, describe a basis for using metallurgical waste slag as a cementitious material for CLSM preparation, and offer a strategy for reducing the environmental problems associated with the treatment of metallurgical waste.

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Effect of Fly Ash on Strength and Stiffness Characteristics of Controlled Low-Strength Material in Shear Wave Monitoring

Cited by 12 publications

References 16 publications

Soil Stabilization Using Zein Biopolymer

Soil Stabilization Using Zein Biopolymer

Effect of Curing Condition and Solvent Content on Mechanical Properties of Zein-Biopolymer-Treated Soil

Research Progress on Controlled Low-Strength Materials: Metallurgical Waste Slag as Cementitious Materials

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