Civil and Project journal

Investigation of Heavy Concrete Durability under the Influence of Chlorine Ion Penetration

Volume 3, Issue 9 - Serial Number 31
December 2021
Pages 32-50
Civil and Project journal

Document Type : Research Article

Authors

farzad lohrasbi 1
mohamad mehdi jabbari 2

1 Department of Civil Engineering, Islamic Azad University, Shiraz Branch, Fars, Iran

2 Assistant Professor, Department of Civil Engineering, Islamic Azad University, Shiraz Branch, Fars, Iran

Abstract
One of the important differences between the properties of ordinary concrete and heavy concrete is the use of metal or mineral aggregates instead of sand in concrete. Using ilmenite powder as a substitute for currently used heavy metals such as lead in concrete can reduce costs as well as sustainability and environmental protection. Use of heavy concrete to prevent harmful radiation for construction of hospital, military, nuclear centers and also to increase durability and resistance to wear and penetration of chloride ions for the construction of offshore concrete structures such as ports, offshore oil rigs, breakwater walls and Lighthouse or used in dam industry. In this research, an attempt was made to evaluate the durability of heavy concrete against intrusion by using a laboratory program using heavy grain of ilmenite and in order to support the production of domestic industries and mines using ilmenite powder of titanium mine in Kahnooj city of Kerman province. Chloride attack ions should be treated by RCMT method. In this research, samples made according to ACI standard by absolute volumetric method and laboratory optimization based on the type and properties of materials used have been prepared. The heavy concrete mixing plan has been adapted by replacing ilmenite powder with a maximum size of 1 mm in volume ratios of 10%, 20%, 30%, 40%, replacing sand in concrete and cement grade of 450 kg per cubic meter. The results of this study show that the use of ilmenite powder in heavy concrete increases the density of concrete and reduces the penetration rate of attack ions in concrete, so that by adding 20% and 30% ilmenite powder in the concrete structure, respectively, chloride ion penetration coefficient of 27% And is reduced by 22%.

Keywords

Heavy Concrete
Ilmenite
Chloride Ion Infiltration
RCMT Test
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www.cpjournals.com ISSN:6262-155X )Civil & Project Journal)CPJ(( نشریه عمران و پروژه
ػال ػ مَ، د سٍ 3، ؿواس 9، آرس 1400 ،ؿواس پیاپی 31 ،کفح 32 تا کفح 50
44
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  • Receive Date 01 July 2021
  • Revise Date 13 July 2021
  • Accept Date 06 August 2021
  • First Publish Date 22 November 2021
  • Publish Date 22 November 2021

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