水泥砂漿中之氯離子隨細度模數變化的影響

Abstract

本文主要是研究氯離子在水泥砂漿中隨著細度模數變化的影響,所表現出的各種性質。由 研究結果顯示,凝結時間會隨著氯離子的添加及細度模數的減少而加速凝結。而由水溶法 量測出在水泥砂漿中的氯離子,會因養護環境的不同而呈現不同的情況,如在水中會隨著天 數而減少,而在海水中養護,則會逐漸增加,約達10000ppm的濃度。至於酸溶法中所測出的 氯離子濃度,亦會因環境的不同而有不同的結果。在空氣中約是原先的值,而在水中則會隨 著養護天數而減少。至於酸溶法所求出的值約是水溶法求出值的二到三倍。水泥砂漿中的 氯離子會隨著細度模數的大小而不同,在水中養護的試體會因細度模數愈大而有愈少的游 離性氯離子,而在海水中養護的試體,則會因細度模數的愈大,而有愈多的游離性氯離子。 The all kinds of engineering properties of the influence of motar co ntaining chloride ion changed by F.M. is the essential aim of this paper. It indicates that the hardened time will harden faster according to t he chloride ion concentration and the decrease of F.M.The determination by water soluble chloride process in mortar will be different because of cur ing process.It will be decrease according to the elongation of time in the water and will be almost increase to 10000ppm in the sea.The chloride ion concentration in the determination by acid soluble chloride process will be different because of curing process.It will be almost with the original amount of chloride ion in the air and may be decrease according to the elongation of time in the water.And the amount of acid soluble chloride pro cess is almost twice or thrice the amount of water soluble chloride process . The chloride ion of mortar will be different because of F.M.The rati o of chloride ion concentration in the determination by water soluble chlor ide process may decrease in the water according to the increase of F.M.and will be perfectly different result in the sea.