Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Performance Evaluation of Roller Compacted Concrete Containing Ferrochrome Slag Aggregates and Red Mud
https://orcid.org/http://orcid.org/0000-0002-5370-6504
The proper disposal of the massive amounts of ferrochrome slag (FCS) and red mud generated in huge quantities from ferrochrome and alumina industries is a serious issue that has to be addressed. The use of such materials in roller compacted pavements seems to be a sustainable solution in both environmental and economic aspects. Numerous studies have examined the effects of substituting different types of coarse aggregate in roller compacted concrete pavements, such as recycled concrete aggregates, electric arc furnace slag, tyre rubber aggregates, and reclaimed asphalt pavement aggregates. However, no research hasn’t been published to date assessing the potential of ferrochrome slag aggregates and red mud in roller-compacted concrete. This study investigates the performance of roller compacted concrete (RCC) with ferrochrome slag aggregates (FCS) and red mud in terms of fresh, hardened, durability, and microstructural properties. Initially, FCS was used to substitute conventional coarse aggregates (CCA) in proportions of 25%, 50%, 75%, and 100%. Later, red mud was used to substitute cement with 5, 10, 15 and 20%, along with 100% FCS. The RCC specimens’ morphology was inspected using a scanning electron microscope (SEM). To learn more about the crystalline phases and the reaction products, X-ray diffraction (XRD) was used. Incorporating any fraction of FCS improved the optimum moisture content (OMC) and maximum dry density (MDD); however, a maximum of only 0.7% increase in OMC was observed at the highest replacement level (100%).Further noteworthy improvement in compressive, flexural, and tensile strength was reported at 100% substitution of natural aggregates with FCS. Durability results indicated that FCS could be beneficial in terms of resistance to chloride and sulfate attack and abrasion resistance. Rough texture and good intrinsic strength of FCS were observed to cause the enhanced performance of RCC-containing FCS aggregates. A decline in mechanical and durability properties was reported after the incorporation of red mud as a cement substitute. However, ferrochrome slag compensated for the loss in mechanical and durability properties by up to 10% by replacing cement with red mud. RCC with a compressive strength of around 32.4 MPa can be attained by completely substituting coarse aggregate with FCS and replacing 20% of cement with red mud. Therefore, using high quantities of ferrochrome slag and red mud in pavement construction is viable. This approach can encourage more sustainable RCC pavement construction by using FCS in place of natural coarse aggregates and red mud as a partial cement replacement.
Performance Evaluation of Roller Compacted Concrete Containing Ferrochrome Slag Aggregates and Red Mud
https://orcid.org/http://orcid.org/0000-0002-5370-6504
The proper disposal of the massive amounts of ferrochrome slag (FCS) and red mud generated in huge quantities from ferrochrome and alumina industries is a serious issue that has to be addressed. The use of such materials in roller compacted pavements seems to be a sustainable solution in both environmental and economic aspects. Numerous studies have examined the effects of substituting different types of coarse aggregate in roller compacted concrete pavements, such as recycled concrete aggregates, electric arc furnace slag, tyre rubber aggregates, and reclaimed asphalt pavement aggregates. However, no research hasn’t been published to date assessing the potential of ferrochrome slag aggregates and red mud in roller-compacted concrete. This study investigates the performance of roller compacted concrete (RCC) with ferrochrome slag aggregates (FCS) and red mud in terms of fresh, hardened, durability, and microstructural properties. Initially, FCS was used to substitute conventional coarse aggregates (CCA) in proportions of 25%, 50%, 75%, and 100%. Later, red mud was used to substitute cement with 5, 10, 15 and 20%, along with 100% FCS. The RCC specimens’ morphology was inspected using a scanning electron microscope (SEM). To learn more about the crystalline phases and the reaction products, X-ray diffraction (XRD) was used. Incorporating any fraction of FCS improved the optimum moisture content (OMC) and maximum dry density (MDD); however, a maximum of only 0.7% increase in OMC was observed at the highest replacement level (100%).Further noteworthy improvement in compressive, flexural, and tensile strength was reported at 100% substitution of natural aggregates with FCS. Durability results indicated that FCS could be beneficial in terms of resistance to chloride and sulfate attack and abrasion resistance. Rough texture and good intrinsic strength of FCS were observed to cause the enhanced performance of RCC-containing FCS aggregates. A decline in mechanical and durability properties was reported after the incorporation of red mud as a cement substitute. However, ferrochrome slag compensated for the loss in mechanical and durability properties by up to 10% by replacing cement with red mud. RCC with a compressive strength of around 32.4 MPa can be attained by completely substituting coarse aggregate with FCS and replacing 20% of cement with red mud. Therefore, using high quantities of ferrochrome slag and red mud in pavement construction is viable. This approach can encourage more sustainable RCC pavement construction by using FCS in place of natural coarse aggregates and red mud as a partial cement replacement.
Performance Evaluation of Roller Compacted Concrete Containing Ferrochrome Slag Aggregates and Red Mud
https://orcid.org/http://orcid.org/0000-0002-5370-6504
The proper disposal of the massive amounts of ferrochrome slag (FCS) and red mud generated in huge quantities from ferrochrome and alumina industries is a serious issue that has to be addressed. The use of such materials in roller compacted pavements seems to be a sustainable solution in both environmental and economic aspects. Numerous studies have examined the effects of substituting different types of coarse aggregate in roller compacted concrete pavements, such as recycled concrete aggregates, electric arc furnace slag, tyre rubber aggregates, and reclaimed asphalt pavement aggregates. However, no research hasn’t been published to date assessing the potential of ferrochrome slag aggregates and red mud in roller-compacted concrete. This study investigates the performance of roller compacted concrete (RCC) with ferrochrome slag aggregates (FCS) and red mud in terms of fresh, hardened, durability, and microstructural properties. Initially, FCS was used to substitute conventional coarse aggregates (CCA) in proportions of 25%, 50%, 75%, and 100%. Later, red mud was used to substitute cement with 5, 10, 15 and 20%, along with 100% FCS. The RCC specimens’ morphology was inspected using a scanning electron microscope (SEM). To learn more about the crystalline phases and the reaction products, X-ray diffraction (XRD) was used. Incorporating any fraction of FCS improved the optimum moisture content (OMC) and maximum dry density (MDD); however, a maximum of only 0.7% increase in OMC was observed at the highest replacement level (100%).Further noteworthy improvement in compressive, flexural, and tensile strength was reported at 100% substitution of natural aggregates with FCS. Durability results indicated that FCS could be beneficial in terms of resistance to chloride and sulfate attack and abrasion resistance. Rough texture and good intrinsic strength of FCS were observed to cause the enhanced performance of RCC-containing FCS aggregates. A decline in mechanical and durability properties was reported after the incorporation of red mud as a cement substitute. However, ferrochrome slag compensated for the loss in mechanical and durability properties by up to 10% by replacing cement with red mud. RCC with a compressive strength of around 32.4 MPa can be attained by completely substituting coarse aggregate with FCS and replacing 20% of cement with red mud. Therefore, using high quantities of ferrochrome slag and red mud in pavement construction is viable. This approach can encourage more sustainable RCC pavement construction by using FCS in place of natural coarse aggregates and red mud as a partial cement replacement.
Performance Evaluation of Roller Compacted Concrete Containing Ferrochrome Slag Aggregates and Red Mud
Iran J Sci Technol Trans Civ Eng
Kumar, B. A. V. Ram (Autor:in) / Ramakrishna, G. (Autor:in) / Ajay, C. H. (Autor:in)
01.02.2025
19 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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