탄소 중립 기반 저탄소 무기 결합재를 활용한 생태여울둑 개발 및 수질 개선 효과분석에 관한 연구 = A Study on the Development of an Ecological Weir System Using Carbon-Neutral Low-Carbon Inorganic Binder and Its Effectiveness in Water Quality Improvement

국문 초록 (Abstract)

ㆍResearch Topic: This study aims to develop a low-carbon inorganic binder using red clay powder and to verify its effectiveness in improving water quality and restoring river ecosystems by applying it to an ecological weir system.
ㆍResearch Background: Traditional Portland cement poses significant environmental limitations due to high carbon emissions and its negative impact on riparian ecosystems. Accordingly, the demand for eco-friendly alternatives and nature-based purification systems is increasing.
ㆍDifference from Previous Studies: While previous studies primarily focused on analyzing the basic properties of materials in laboratory settings, this study distinguishes itself by integrating field application and evaluating both the practical performance and environmental functionality of the developed materials.
ㆍResearch Method: Concrete was prepared by replacing cement with red clay powder at varying rates (0%, 15%, 30%), and its mechanical and physical properties—such as compressive strength, flexural strength, stress–strain behavior, porosity, and permeability—were quantitatively analyzed. Based on the optimal mix ratio, a pilot-scale test and field application of the ecological weir were conducted, followed by long-term monitoring of changes in water quality indicators between inflow and outflow.
ㆍResearch Results: The substitution of cement with red clay powder affected the mechanical properties and microstructure of the concrete. Although a slight reduction in early strength was observed, long-term durability was improved. Field experiments confirmed meaningful reductions in key water quality parameters such as COD, T-N, and Chl-a.
ㆍContributions and Expected Outcomes: This study demonstrates the potential integration of low-carbon construction materials with ecological restoration technologies. The findings are expected to serve as foundational data for future field deployment and policy implementation of sustainable construction and water purification technologies.