상·하수용 배관재의 토양부식특성 및 수명예측 연구

Abstract

Galvanized steel pipe, copper pipe and stainless steel pipe which is being used in waterworks piping materials. In case of galvanized steel pipe, the precipitation of a product is being generated due to the pollution of the tap water, a white water phenomenon and various corrosion reaction because a zinc ion is melted by tap water. And in case of a copper pipe, many problems which is harm in sanitation appeared because of a inflow of harmfulness substance by a frequent accident of a water leakage. So, to prevent these problems, it is substituted for stainless steel pipe. However, those problems is still occurring because of badness of welding, a problem of a water leakage in connection part and a increment of construction expenses. Therefore, this research has examined the laying period according to each piping thickness and a corrosion shape according to each laying depth after laying in various soils(sandy loam, loamy, clay loam, clay) using galvanized steel pipe, copper pipe and stainless steel pipe. That is, we has studied the data which is necessary for a rational method of preserving the quality of water by examining the corrosion properties of piping materials in the soil environment which waterworks piping materials is being used. In addition, in a waterworks supply, standardized data concerned to fundamental data and piping materials is not sufficient. So, we has set up a purpose to develop the standardized system to develop the new method of construction.