English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Zendy Plus

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Zendy Tools

Zendy Open

Recent studies indicate that corrosion resistance of reinforced concrete could be improved by enhancing the concrete structure, particularly Portland cement (PC) replacement by mineral compounds. In this study, the effect of calcined clay (CC) and limestone (LS) as partial replacement of PC on corrosion resistance of HRB500 carbon steel reinforced concrete in 3.5% NaCl solution were considered. After curing for one day, the PC replaced with both CC and LS admixtures revealed the strength of 28 MPa while the mixture with only limestone showed a compressive strength of 21 MPa. The lower strength in blended concretes than the PC mixture can be attributed to the effect of cement dilution. Water absorption results indicate that transport of chloride ions, liquid and moisture is greatly reduced, mostly due to the pore structure refinement of the concrete sample with LS and CC admixtures. The polarization results reveal that the concrete specimens containing CC and LS admixtures had a lower corrosion value on the surface of carbon steel compared to the other specimens. The EIS findings exhibited that the double-layer capacitance value reduced for the concrete sample including both LS and CC admixtures, showing the passive layer thickness was enhanced and resulting in an improved protective capacity.

international journal of electrochemical science

Calcined Clay and Limestone as Partial Replacements of Portland Cement: Electrochemical Corrosion Behavior of Low Carbon Steel Rebar as Concrete Reinforcement in Corrosive Environment