Effect of concrete unit weight on the mechanical properties of bottom ash aggregate concrete

Kim, Yong-Hyok; Kim, Hak-Young; Yang, Keun–Hyeok; Ha, Jung‐Soo

doi:10.1016/j.conbuildmat.2020.121998

Cited by 21 publications

(11 citation statements)

References 22 publications

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“…The percentage achieved from the calculation is noted as significant and acceptable. The result of ultimate load and compressive strength with 25% WBA which is more than the control mix is similar to the study by Kim et al [24]. Kim et al [24] reported that the specimens with 25%, 50%, and 75% fine BA aggregate have shown more value of compressive strength compared with the control mix.…”

Section: Materials Properties Of Washed Bottom Ash (Wba) Concretesupporting

confidence: 86%

Behavior of Built-Up Cold-Formed Steel Stub Columns Infilled with Washed Bottom Ash Concrete

Sani

Muftah

Mohsan

et al. 2022

Adv. technol. innov.

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The main objective of the study is to determine the behavior of built-up cold-formed steel (CFS) stub columns infilled with washed bottom ash (WBA) concrete and also their failure mode. Five proportions of WBA as sand replacement in concrete and five specimens of built-up CFS stub columns infilled with WBA are produced in this study. There are four parts of the testing conducted: material properties of CFS, material properties of WBA concrete, mechanical properties of the connection, and mechanical behavior of built-up CFS stub columns. The result shows that the specimen with 25% WBA is reported to have the highest value of compressive strength in the material properties of WBA concrete and the mechanical behavior of built-up CFS stub column. The percentage difference of the ultimate load of the built-up CFS column filled with normal concrete and filled with WBA concrete is noted to have a range of 3% to 25%.

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Section: Materials Properties Of Washed Bottom Ash (Wba) Concretesupporting

confidence: 86%

Behavior of Built-Up Cold-Formed Steel Stub Columns Infilled with Washed Bottom Ash Concrete

Sani

Muftah

Mohsan

et al. 2022

Adv. technol. innov.

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“…LC-SS15 showed a decrease in dry density by approximately 12% compared to that of NC-SS15. Kim et al [18] also observed that the dry density was decreased approximately 16% when replacing with lightweight aggregates. Through the use of lightweight aggregates, it is possible to expect to reduce the weight of concrete.…”

Section: Dry Densitymentioning

confidence: 92%

“…The interest in lightweight characteristics for structures is growing of late in the concrete and construction industries. A representative method for reducing the weight of structures is to utilize lightweight aggregates, and many studies on lightweight aggregate concrete have been conducted [15][16][17][18][19][20][21]. However, lightweight aggregates are not only vulnerable to external forces because of the numerous pores distributed inside them but they also absorb mixing water from concrete, reducing the concrete's fluidity [16,[22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Electrical Characteristics of Lightweight Aggregate Concrete Reinforced with Steel Fibers

et al. 2021

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There is increased interest in applying electromagnetic (EM) shielding to prevent EM interference, which destroys electronic circuits. The EM shielding’s performance is closely related to the electrical conductivity and can be improved by incorporating conductive materials. The weight of a structure can be reduced by incorporating lightweight aggregates and replacing the steel rebars with CFRP rebars. In this study, the effects of lightweight coarse aggregate and CFRP rebars on the mechanical and electrical characteristics of concrete were investigated, considering the steel fibers’ incorporation. The lightweight coarse aggregates decreased the density and strength of concrete and increased the electrical conductivity of the concrete, owing to its metallic contents. The steel fibers further increased the electrical conductivity of the lightweight aggregate concrete. These components improved the EM shielding performance, and the steel fibers showed the best performance by increasing shielding effectiveness by at least 23 dB. The CFRP rebars behaved similarly to steel rebars because of their carbon fiber content. When no steel fiber was mixed, the shielding effectiveness increased by approximately 2.8 times with reduced spacing of CFRP rebars. This study demonstrates that lightweight aggregate concrete reinforced with steel fibers exhibits superior mechanical and electrical characteristics for concrete and construction industries.

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“…The unit weight values of FAM and PCM specimens were investigated at the age of 28 days, as presented in Table 4. The unit weight is an important parameter, which relates to the physical properties of the specimen (Kim et al, 2021). By comparing with the unit weight of PCM, the FAM specimens had relatively greater unit weight about 8.73%, 7.21%, and 6.13% for FAM6, FAM8, and FAM10, respectively.…”

Section: Mortar Unit Weightmentioning

confidence: 99%

The Effect of Sodium Hydroxide Molarity on The Compressive and Splitting Tensile Strength of Ferronickel Slag-Based Alkali-Activated Mortar

Kuncoro

Djayaprabha

2021

MKTS

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The use of cement as the main binding agent in construction contributes approximately 7-10% in total of carbon dioxide gas emissions worldwide. In this study, the replacement of Portland cement using ground granulated ferronickel slag (GFNS) activated by the combination of sodium hydroxide (NaOH) dan sodium silicate (Na2SiO3) was utilized for producing alkali-activated mortar (AAM) as construction material. Four different mortar mixtures were prepared in this experimental work. There were three mixtures of ferronickel slag-based alkali activated mortar (FAM) with the variations of NaOH molarity of 6, 8, and 10M and cement-based mortar mixture (PCM) with water-to-cement ratio (w/c) of 0.5 was used as the control specimens. Overall, the flow and workability of the FAM specimen was lower than the PCM specimen due to the presence of silicate caused a sticky characteristic on the paste. On the other hand, the unit weight of FAM mortar was higher than the PCM specimen. Among all FAM mixtures, the most effective compressive strength and splitting tensile strength results were achieved by the FAM8 mixture, with a compressive strength at 28 days of 33.72 MPa and the splitting tensile strength at 28 days of 2.65 MPa, which had both good workability and chemical reaction of the material.

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Effect of concrete unit weight on the mechanical properties of bottom ash aggregate concrete

Cited by 21 publications

References 22 publications

Behavior of Built-Up Cold-Formed Steel Stub Columns Infilled with Washed Bottom Ash Concrete

Behavior of Built-Up Cold-Formed Steel Stub Columns Infilled with Washed Bottom Ash Concrete

Mechanical and Electrical Characteristics of Lightweight Aggregate Concrete Reinforced with Steel Fibers

The Effect of Sodium Hydroxide Molarity on The Compressive and Splitting Tensile Strength of Ferronickel Slag-Based Alkali-Activated Mortar

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