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Improving Marine Concrete Performance Based on Multiple Criteria Using Early Portland Cement and Chemical
Taegyu Lee1, Jaehyun Lee2, Jaewook Jeong2
1Department of Fire and Disaster Prevention, Semyung University, 65, Semyeong-ro, Jecheon-si 27136, Korea.
Materials (Basel, Switzerland)
|September 10, 2021
Summary
This study shows that combining early Portland cement (EPC) and ground granulated blast-furnace slag (GGBS) enhances concrete
Area of Science:
- Materials Science
- Civil Engineering
- Construction Materials
Background:
- Marine environments require concrete with high chloride resistance and early strength.
- C35 (35 MPa) is the minimum compressive strength for marine concrete.
- Optimizing concrete mix design is crucial for performance and cost-effectiveness.
Purpose of the Study:
- To evaluate concrete mix designs for improved chloride resistance and early strength.
- To assess the performance of early Portland cement (EPC) and ground granulated blast-furnace slag (GGBS) blends.
- To determine the economic and environmental benefits of using EPC and GGBS.
Main Methods:
- Selected a C24 (24 MPa) concrete mixture for investigation.
- Manufactured binders using ordinary Portland cement (OPC), EPC, and GGBS.
- Conducted experiments to measure early strength development and chloride resistance.
Main Results:
- Combined EPC and GGBS significantly improved early strength and chloride resistance.
- Form removal time was reduced by 5-9 hours.
- Construction productivity increased, with reductions up to 16.39 hours/cycle.
- EPC and GGBS blends proved more economical and environmentally friendly than C35 concrete.
Conclusions:
- EPC and GGBS are effective in enhancing concrete performance for marine applications.
- Optimized mix designs using EPC and GGBS offer significant economic and environmental advantages.
- This research provides a basis for economical concrete mix design considering strength development and admixtures.
Keywords:
chloride resistanceearly Portland cementearly strengthground granulated blast-furnace slaglife cycle CO2marine environmenttime for removal of formsMore Related Videos
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