Provided herein is a washing type blast furnace slag which is smaller than fine-grade size and useful in production of farmland sidewalk pavement and farmland ditch pavement. The washing type blast furnace slag is low-cost and environmentally friendly, and may become quite dense after being dried, bonded and cured, so the farmland sidewalk pavement and the farmland ditch pavement made thereof will not grow weeds. Without additional spraying of herbicides, the farmland sidewalk can be protected against washout or the generation of muds in rainy days, such that vehicles can still move in a normal traffic, and the farmland ditch also will not be gradually filled because of the flow of field water when the farmland sidewalk or farmland ditch is no longer used or diverted, the washing type blast furnace slag for production of farmland sidewalk pavement and farmland ditch pavement according to this invention can also be in-situ crushed for mixture with farmland soil for use as soil modifier, thereby saving additional costs of waste disposal and soil modifier.一種含細料級以下尺寸的水洗式高爐渣用於製作農田便道鋪面以及農田溝渠鋪面之用途,其成本低廉且環保;且水洗式高爐渣乾燥膠結固化後相當密實,故其所製成之農田便道鋪面以及農田溝渠鋪面不會生長雜草、無須另外噴灑除草劑,也能保護農田便道於雨天時不會被沖刷掉或是產生泥濘,使得與後車輛仍可正常通行,農田溝渠亦不會因田水流動而逐漸填平;當農田便道或農田溝渠不再使用或改道,本創作之水洗式高爐渣製作的農田便道鋪面與農田溝渠鋪面,亦能就地破碎與農田土壤混合,作為土壤改質劑使用,進而可節省額外廢棄物處理及土壤改質劑費用。1‧‧‧農田便道鋪面2‧‧‧農田溝渠鋪面6‧‧‧農田便道7‧‧‧農田8‧‧‧溝渠
