- 學位論文
爐石粉及爐碴粉取代水泥性質之研究
Study on Testing Mortar Properties with a Cement Replacement by Using Slag and Slag Powder
摘要
本研究主要探討鋼鐵廠煉鐵後產生之廢料，爐石粉與爐碴粉取代部分水泥對水泥砂漿強度、乾縮之影響，藉此分析取代摻料之最佳配比，以期減少水泥用量，達到廢料回收利用之節能減碳目標，研究中以不含爐石粉及爐碴粉之控制組為基礎，分別進行爐石粉取代水泥量10%、20%、40%及60%與爐石粉及爐碴粉混合取代水泥量10%、20%、40%及60%，其中爐石粉及爐渣粉的混合比例包含1/4、1/2、3/4，試驗內容包含水泥砂漿之抗拉強度、抗壓強度與乾縮量。 試驗結果顯示，由於爐石粉屬晚期強度較佳之摻料，可發現S100~S600之強度都以超越純水泥沙漿之90天強度，其中又以爐石粉取代水泥量20%為最佳，再經由數據發現，針對每組同一個取代量而言(10%、20%、30%或40%)，其爐石粉添加越多其強度也較高另兩個配比，而乾縮量則是爐石粉取代水泥量越多相對收縮量也越高，而爐碴粉因含有不穩定物質，故會有膨脹現象發生。
並列摘要
The main object of this study is the discussion of slag and slag powder, the waste material produced with iron-smelting, applied to cement mortar. Testing on properties such as compression strength, tensile strength, time of setting, bleeding, shrinkage test and flow test were conducted according to the codes : American Society for Testing and Material (ASTM) and China National Standards (CNS). Different cement-replacement proportions: 10%, 20%, 40% and 60% were designed for the tests and each cement-replacement proportions could be divided into using pure slag powder and using slag mixing slag powder as: 25% slag powder, 50% slag powder and 75% slag powder. The test results show that the cement mortar specimens exhibited the higher compression strength with an elder age when the slag powder was used to the cement replacement. Among the different cement-replacement proportions, specimen of 20% performed better than others specimens. The comparison of the use of slag mixing slag powder with equal replaced proportions indicated that the compression strength increased followed the using amount of the slag powder. Moreover, there was the swelling nature in the slag for the inhibition of the drying shrinkage.