Enhancement of mechanical and durability behavior of recycled aggregate concrete by accelerated carbonation and incorporation of colloidal nano-silica
By: Tantray, Manzoor Ahmad
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Publisher: Mumbai ACC LTD 2023Edition: Vol.7(1), Jan.Description: 50-58p.Subject(s): Civil EngineeringOnline resources: Click here
In:
Indian Concrete Journal - ICJSummary: Annually a significant volume of concrete is produced around the world as a result of the destruction of older buildings for industrialization and urbanisation or sometimes as a result of a natural disaster like an earthquake. There are a tonne of recovered coarse aggregates in this debris that is dumped in landfills. Over the time significant work has been done to validate whether recycled concrete materials can be used as replacement of constituents of concrete. In this context the present paper has mainly focused on improving the properties of recycled aggregates by the technique of accelerated carbonation and incorporation of colloidal nano-silica. The results posit that carbonation of recycled aggregate concrete (RAC) showed an increase of 10 % in compressive strength as compared to 100 % RAC ,which in addition to 3 % colloidal nano-silica resulted in 35.8 % increase in relation to 100 % carbonated recycled aggregate concrete (CRAC). Furthermore carbonation and addition of nano-silica showed significant increase on flexural and split tensile strength of concrete.
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
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Articles Abstract Database
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School of Engineering & Technology (PG) Archieval Section | Not for loan | 2023-0987 |
Annually a significant volume of concrete is produced around the world as a result of the destruction of older buildings for industrialization and urbanisation or sometimes as a result of a natural disaster like an earthquake. There are a tonne of recovered coarse aggregates in this debris that is dumped in landfills. Over the time significant work has been done to validate whether recycled concrete materials can be used as replacement of constituents of concrete. In this context the present paper has mainly focused on improving the properties of recycled aggregates by the technique of accelerated carbonation and incorporation of colloidal nano-silica. The results posit that carbonation of recycled aggregate concrete (RAC) showed an increase of 10 % in compressive strength as compared to 100 % RAC ,which in addition to 3 % colloidal nano-silica resulted in 35.8 % increase in relation to 100 % carbonated recycled aggregate concrete (CRAC). Furthermore carbonation and addition of nano-silica showed significant increase on flexural and split tensile strength of concrete.
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