Abstract
An integrated rainwater management system is necessary due to the frequent occurrence of localized torrential rainfall and heat waves caused by an abnormal climate. It is necessary to develop a rainwater detention system that can implement rainwater infiltration and detention simultaneously. In this study, the safety, durability, and eco-friendliness of an eco-friendly rainwater detention system developed using an eco-friendly inorganic binder, which involves red clay, were evaluated and its economic feasibility was compared with that of the existing detention system. After 14 days, analysis of the maximum compression load and computational finite element analysis confirmed that the strength standard was satisfied and the structure was safe. No heavy metals or organic compounds were detected in the leaching test. Thus, the eco-friendly rainwater detention system is structurally safe and eco-friendly with no impact on the soil and groundwater environment, and is economically feasible because the construction cost and life cycle cost are approximately 30% and 58% lower, respectively, than those of the existing polyethylene infiltration detention tank system. These results indicate that improved safety, eco-friendliness, and economic feasibility can be achieved, compared to those of the existing system, if the eco-friendly rainwater detention system is applied in the field.
Highlights
In recent years, the carbon neutrality movement has been actively implemented worldwide to reduce carbon dioxide (CO2 ) emissions, which constitute the primary cause of global warming [1]
In South Korea, considerable efforts have been made for greenhouse gas (GHG) reduction, such as increasing the 2030 Nationally Determined Contribution (NDC) to 30% [2,3]
The amounts of cadmium, lead, hexavalent chromium, arsenic, and benzene were measured in accordance with the JIS K 0102 [25] test method using the red clay water-permeable block unit specimen
Summary
The carbon neutrality movement has been actively implemented worldwide to reduce carbon dioxide (CO2 ) emissions, which constitute the primary cause of global warming [1]. The construction industry, which accounts for approximately 40% of all CO2 gas emissions, is closely related to climate change, such as global warming [5]. GHG reduction is expected to become a crucial issue for the construction industry in the future [6,7,8,9,10]. Despite global efforts to reduce CO2 emissions, abnormal climate events, such as the sea level rise, heat waves, and heavy snow, have occurred worldwide [11], including in Korea. The groundwater level decreases due to reductions in precipitation in the spring and autumn
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