Experimental Study on Self Compacting Fibrous Concrete Comprising Magnesium Sulphate Solution Treated Recycled Aggregates
It appears that the awareness and intentions to use recycled concrete aggregate (RCA) in concrete are expanding over the globe. The production of self-compacting concrete (SCC) using RCA is an emerging field in the construction sector. However, the highly porous and absorptive nature of adhered mort...
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| Format: | Article |
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MDPI AG
2022-01-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/15/1/340 |
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| author | Parthiban Kathirvel Gunasekaran Murali Nikolai Ivanovich Vatin Sallal R. Abid |
| author_facet | Parthiban Kathirvel Gunasekaran Murali Nikolai Ivanovich Vatin Sallal R. Abid |
| author_sort | Parthiban Kathirvel |
| collection | DOAJ |
| description | It appears that the awareness and intentions to use recycled concrete aggregate (RCA) in concrete are expanding over the globe. The production of self-compacting concrete (SCC) using RCA is an emerging field in the construction sector. However, the highly porous and absorptive nature of adhered mortar on RCA’s surface leads to reduced concrete strength, which can be removed with the application of various techniques, such as acid treatment. This study investigated the effect of the partial replacement of silica fume by cement and natural aggregate (NA) by RCA with and without steel fibre. The used RCA was treated with magnesium sulphate solution. It was immersed in solutions with different concentrations of 10%, 15% and 20% and for different periods of 5, 10 and 15 days. Sixteen mixes were prepared, which were divided into six groups with or without 1% of steel fibre content. The fresh properties, compressive strength, split tensile strength and impact resistance were examined. The results revealed that the strengths of the mixes with 20% RCA were marginally better than those of the control mixes. The compressive strength and split tensile strength were reduced by 34% and 35% at 60% RCA content, respectively, as compared to the control mixes. |
| first_indexed | 2024-03-10T03:32:31Z |
| format | Article |
| id | doaj.art-20abade14b13483db1adf694c43262d3 |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T03:32:31Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
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| series | Materials |
| spelling | doaj.art-20abade14b13483db1adf694c43262d32023-11-23T11:51:47ZengMDPI AGMaterials1996-19442022-01-0115134010.3390/ma15010340Experimental Study on Self Compacting Fibrous Concrete Comprising Magnesium Sulphate Solution Treated Recycled AggregatesParthiban Kathirvel0Gunasekaran Murali1Nikolai Ivanovich Vatin2Sallal R. Abid3School of Civil Engineering, SASTRA Deemed University, Thanjavur 613404, IndiaSchool of Civil Engineering, SASTRA Deemed University, Thanjavur 613404, IndiaPeter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, RussiaCivil Engineering Department, Wasit University, Kut 52003, IraqIt appears that the awareness and intentions to use recycled concrete aggregate (RCA) in concrete are expanding over the globe. The production of self-compacting concrete (SCC) using RCA is an emerging field in the construction sector. However, the highly porous and absorptive nature of adhered mortar on RCA’s surface leads to reduced concrete strength, which can be removed with the application of various techniques, such as acid treatment. This study investigated the effect of the partial replacement of silica fume by cement and natural aggregate (NA) by RCA with and without steel fibre. The used RCA was treated with magnesium sulphate solution. It was immersed in solutions with different concentrations of 10%, 15% and 20% and for different periods of 5, 10 and 15 days. Sixteen mixes were prepared, which were divided into six groups with or without 1% of steel fibre content. The fresh properties, compressive strength, split tensile strength and impact resistance were examined. The results revealed that the strengths of the mixes with 20% RCA were marginally better than those of the control mixes. The compressive strength and split tensile strength were reduced by 34% and 35% at 60% RCA content, respectively, as compared to the control mixes.https://www.mdpi.com/1996-1944/15/1/340recycled aggregatesustainable treatmentmagnesium sulphate self-compacting concretestrength |
| spellingShingle | Parthiban Kathirvel Gunasekaran Murali Nikolai Ivanovich Vatin Sallal R. Abid Experimental Study on Self Compacting Fibrous Concrete Comprising Magnesium Sulphate Solution Treated Recycled Aggregates Materials recycled aggregate sustainable treatment magnesium sulphate self-compacting concrete strength |
| title | Experimental Study on Self Compacting Fibrous Concrete Comprising Magnesium Sulphate Solution Treated Recycled Aggregates |
| title_full | Experimental Study on Self Compacting Fibrous Concrete Comprising Magnesium Sulphate Solution Treated Recycled Aggregates |
| title_fullStr | Experimental Study on Self Compacting Fibrous Concrete Comprising Magnesium Sulphate Solution Treated Recycled Aggregates |
| title_full_unstemmed | Experimental Study on Self Compacting Fibrous Concrete Comprising Magnesium Sulphate Solution Treated Recycled Aggregates |
| title_short | Experimental Study on Self Compacting Fibrous Concrete Comprising Magnesium Sulphate Solution Treated Recycled Aggregates |
| title_sort | experimental study on self compacting fibrous concrete comprising magnesium sulphate solution treated recycled aggregates |
| topic | recycled aggregate sustainable treatment magnesium sulphate self-compacting concrete strength |
| url | https://www.mdpi.com/1996-1944/15/1/340 |
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