A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Surface treatments to control concrete deterioration caused by iron sulfide-bearing aggregates
https://orcid.org/0000-0001-8332-3881
https://orcid.org/0000-0003-2117-327X
Abstract Aggregates containing iron sulfide are vulnerable to oxidation processes that may cause an internal sulfate attack and rust formation in concrete, leading to severe deterioration. This research made an effort to propose appropriate protection measures to prevent these issues associated with iron sulfide-containing aggregates. The efficacy of surface treatments with various functional mechanisms in reducing the rate of oxidation and associated concrete deterioration was investigated. All the studied surface treatments, except hydrophobic impregnation, were able to reduce the oxidation rate and related damage. Nevertheless, the degree of protection depends upon the surface treatment types. Surface treatments with epoxy coating and a crystalline waterproof system exhibited outstanding performance in controlling the damage. Nonetheless, the specimens treated with hydrophobic impregnation showed severe damage. An extensive investigation was conducted to comprehend the mechanism that resulted in such behavior, and the outcomes are reported in this paper.
Highlights The oxidation of iron sulfide in aggregates causes internal sulfate attack and rust. Methods to prevent concrete damage from iron sulfide-bearing aggregate are proposed. The effectiveness of various surface treatments in reducing damage is investigated. Crystalline waterproofing and epoxy coating are effective in reducing damage. Hydrophobic impregnation exhibited negative behavior and severe damage.
Surface treatments to control concrete deterioration caused by iron sulfide-bearing aggregates
https://orcid.org/0000-0001-8332-3881
https://orcid.org/0000-0003-2117-327X
Abstract Aggregates containing iron sulfide are vulnerable to oxidation processes that may cause an internal sulfate attack and rust formation in concrete, leading to severe deterioration. This research made an effort to propose appropriate protection measures to prevent these issues associated with iron sulfide-containing aggregates. The efficacy of surface treatments with various functional mechanisms in reducing the rate of oxidation and associated concrete deterioration was investigated. All the studied surface treatments, except hydrophobic impregnation, were able to reduce the oxidation rate and related damage. Nevertheless, the degree of protection depends upon the surface treatment types. Surface treatments with epoxy coating and a crystalline waterproof system exhibited outstanding performance in controlling the damage. Nonetheless, the specimens treated with hydrophobic impregnation showed severe damage. An extensive investigation was conducted to comprehend the mechanism that resulted in such behavior, and the outcomes are reported in this paper.
Highlights The oxidation of iron sulfide in aggregates causes internal sulfate attack and rust. Methods to prevent concrete damage from iron sulfide-bearing aggregate are proposed. The effectiveness of various surface treatments in reducing damage is investigated. Crystalline waterproofing and epoxy coating are effective in reducing damage. Hydrophobic impregnation exhibited negative behavior and severe damage.
Surface treatments to control concrete deterioration caused by iron sulfide-bearing aggregates
https://orcid.org/0000-0001-8332-3881
https://orcid.org/0000-0003-2117-327X
Abstract Aggregates containing iron sulfide are vulnerable to oxidation processes that may cause an internal sulfate attack and rust formation in concrete, leading to severe deterioration. This research made an effort to propose appropriate protection measures to prevent these issues associated with iron sulfide-containing aggregates. The efficacy of surface treatments with various functional mechanisms in reducing the rate of oxidation and associated concrete deterioration was investigated. All the studied surface treatments, except hydrophobic impregnation, were able to reduce the oxidation rate and related damage. Nevertheless, the degree of protection depends upon the surface treatment types. Surface treatments with epoxy coating and a crystalline waterproof system exhibited outstanding performance in controlling the damage. Nonetheless, the specimens treated with hydrophobic impregnation showed severe damage. An extensive investigation was conducted to comprehend the mechanism that resulted in such behavior, and the outcomes are reported in this paper.
Highlights The oxidation of iron sulfide in aggregates causes internal sulfate attack and rust. Methods to prevent concrete damage from iron sulfide-bearing aggregate are proposed. The effectiveness of various surface treatments in reducing damage is investigated. Crystalline waterproofing and epoxy coating are effective in reducing damage. Hydrophobic impregnation exhibited negative behavior and severe damage.
Surface treatments to control concrete deterioration caused by iron sulfide-bearing aggregates
Jeyakaran, Thuraisingam (author) / Pornsiri, Niraporn (author) / Saengsoy, Warangkana (author) / Tangtermsirikul, Somnuk (author)
2024-01-23
Article (Journal)
Electronic Resource
English
Evaluation Protocol for Concrete Aggregates Containing Iron Sulfide Minerals
| Online Contents | 2016