Experimental Study on the Physical and Mechanical Characteristics of Refractory Concrete Using Heat-Treated Steel Slag Coarse Aggregates
The aim of this study is to compare the properties of refractory concrete made with thermally treated and untreated steel slag. Five concrete compositions were prepared and investigated in the present work. The first mixture, referred to as the reference, was formulated using dolomite aggregates, wh...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-10-01
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| Series: | Infrastructures |
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| Online Access: | https://www.mdpi.com/2412-3811/8/10/151 |
| _version_ | 1797573593741131776 |
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| author | Munaf Alkhedr Majed Asaad Mahmoud Ismail George Wardeh |
| author_facet | Munaf Alkhedr Majed Asaad Mahmoud Ismail George Wardeh |
| author_sort | Munaf Alkhedr |
| collection | DOAJ |
| description | The aim of this study is to compare the properties of refractory concrete made with thermally treated and untreated steel slag. Five concrete compositions were prepared and investigated in the present work. The first mixture, referred to as the reference, was formulated using dolomite aggregates, whereas the second and third mixtures were developed by replacing natural coarse aggregate with 50 and 100% by weight of thermally untreated steel slag, respectively. The same replacement ratio (50% and 100%) of thermally treated steel slag was used to produce the fourth and fifth mixtures. Specimens of each specimen were placed in a furnace and heated to 400 °C and 800 °C. The mass loss for all the specimens heated to 400 °C was about 8%, while the reference suffered the maximum mass loss at 800 °C, which was 21.6%. The mixture with a 100% substitution of thermally treated steel slag produced the maximum compressive strength when compared to other mixtures at a temperature of 800 °C. The compressive strength of the M5 mixture was 18 MPa versus 10.87 MPa for the reference mixture. Additionally, optical microscope examination of specimens containing thermally treated steel slag revealed less damage than that observed in mixtures with dolomite. |
| first_indexed | 2024-03-10T21:11:16Z |
| format | Article |
| id | doaj.art-e9593d7af5e94153a547cd8d9e1e0ff4 |
| institution | Directory Open Access Journal |
| issn | 2412-3811 |
| language | English |
| last_indexed | 2024-03-10T21:11:16Z |
| publishDate | 2023-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Infrastructures |
| spelling | doaj.art-e9593d7af5e94153a547cd8d9e1e0ff42023-11-19T16:48:43ZengMDPI AGInfrastructures2412-38112023-10-0181015110.3390/infrastructures8100151Experimental Study on the Physical and Mechanical Characteristics of Refractory Concrete Using Heat-Treated Steel Slag Coarse AggregatesMunaf Alkhedr0Majed Asaad1Mahmoud Ismail2George Wardeh3Department of Transportation and Structural Materials, Faculty of Civil Engineering, Damascus University, Damascus P.O. Box 30621, SyriaDepartment of Transportation and Structural Materials, Faculty of Civil Engineering, Damascus University, Damascus P.O. Box 30621, SyriaDepartment of Transportation and Structural Materials, Faculty of Civil Engineering, Damascus University, Damascus P.O. Box 30621, SyriaL2MGC, CY Cergy-Paris University, 95031 Neuville-sur-Oise, FranceThe aim of this study is to compare the properties of refractory concrete made with thermally treated and untreated steel slag. Five concrete compositions were prepared and investigated in the present work. The first mixture, referred to as the reference, was formulated using dolomite aggregates, whereas the second and third mixtures were developed by replacing natural coarse aggregate with 50 and 100% by weight of thermally untreated steel slag, respectively. The same replacement ratio (50% and 100%) of thermally treated steel slag was used to produce the fourth and fifth mixtures. Specimens of each specimen were placed in a furnace and heated to 400 °C and 800 °C. The mass loss for all the specimens heated to 400 °C was about 8%, while the reference suffered the maximum mass loss at 800 °C, which was 21.6%. The mixture with a 100% substitution of thermally treated steel slag produced the maximum compressive strength when compared to other mixtures at a temperature of 800 °C. The compressive strength of the M5 mixture was 18 MPa versus 10.87 MPa for the reference mixture. Additionally, optical microscope examination of specimens containing thermally treated steel slag revealed less damage than that observed in mixtures with dolomite.https://www.mdpi.com/2412-3811/8/10/151steel slagthermal treatmentmechanical propertiesrefractory concrete |
| spellingShingle | Munaf Alkhedr Majed Asaad Mahmoud Ismail George Wardeh Experimental Study on the Physical and Mechanical Characteristics of Refractory Concrete Using Heat-Treated Steel Slag Coarse Aggregates Infrastructures steel slag thermal treatment mechanical properties refractory concrete |
| title | Experimental Study on the Physical and Mechanical Characteristics of Refractory Concrete Using Heat-Treated Steel Slag Coarse Aggregates |
| title_full | Experimental Study on the Physical and Mechanical Characteristics of Refractory Concrete Using Heat-Treated Steel Slag Coarse Aggregates |
| title_fullStr | Experimental Study on the Physical and Mechanical Characteristics of Refractory Concrete Using Heat-Treated Steel Slag Coarse Aggregates |
| title_full_unstemmed | Experimental Study on the Physical and Mechanical Characteristics of Refractory Concrete Using Heat-Treated Steel Slag Coarse Aggregates |
| title_short | Experimental Study on the Physical and Mechanical Characteristics of Refractory Concrete Using Heat-Treated Steel Slag Coarse Aggregates |
| title_sort | experimental study on the physical and mechanical characteristics of refractory concrete using heat treated steel slag coarse aggregates |
| topic | steel slag thermal treatment mechanical properties refractory concrete |
| url | https://www.mdpi.com/2412-3811/8/10/151 |
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