Civil and Project journal

The effect of the use of early-breaking cationic emulsion bitumen on the durability of structural concrete

https://doi.org/10.22034/cpj.2024.456193.1287
Volume 6, Issue 7 - Serial Number 65
September 2024
Pages 40-57
Civil and Project journal

Document Type : Research Article

Author

Soleyman Jabbari Asli

Specialized parent company of soil technical and mechanical laboratory

Abstract
The cycle of freezing and thawing is one of the damage factors of concrete in cold regions. For this type of damage, the air temperature must change to the point of freezing, melting. The concrete must be in contact with water or humidity, and the porosity of the concrete must be inappropriate. The progression of damage depends on the number of cycles, temperature during solidification, porosity of concrete and environmental conditions of concrete. In this research, the effect of adding early-breaking cationic emulsion bitumen on the durability and other characteristics of structural concrete was investigated by performing water absorption tests, concrete resistance against freezing, melting, permeability, concrete resistance against chlorine ion penetration by electrical conductivity method. For this research, four mixing plans, one mixing as a control and three mixing with the addition of 2, 4 and 6 percent by weight of emulsion bitumen compared to the weight of cement were prepared. Slump tests, compressive strength, water absorption, permeability, durability of concrete against chloride ion penetration by electrical conduction method, surface resistance of concrete against chloride ion penetration and durability of concrete against freezing and thawing cycles were performed on the manufactured samples. The results showed that the addition of emulsion bitumen to structural concrete generally reduces the compressive strength and water absorption of concrete. Adding 6% bitumen reduces the permeability of concrete to the extent maximum. Regarding the durability of concrete against chloride ion penetration, the surface resistance of concrete against chloride ion penetration and the durability of concrete against freezing and thawing cycles do not have a positive effect, and in some cases, it causes a drop in these indices in concrete. Overall review, the results obtained from the conducted tests show that adding 4%, emulsion bitumen to concrete leads to better results.

Keywords

Structural concrete
early-breaking cationic emulsion bitumen
durability
freezing
melting
Subjects
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  • Receive Date 06 April 2024
  • Revise Date 10 April 2024
  • Accept Date 13 May 2024
  • First Publish Date 13 May 2024
  • Publish Date 22 September 2024

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