A study of applying the Slag of Baosteel slag short flow to engineering properties of composite cement mortar

• Main Authors: HSIAO,YU-LUN, 蕭育侖
• Other Authors: Wang,HER-YUAN
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/js6tjj

碩士 === 國立高雄應用科技大學 === 土木工程與防災科技研究所 === 104 === With the changing times and economic development, increasing demand for steel, and the steel-making process is accompanied by industrial waste, and can effectively dispose of in order to reduce carbon dioxide emissions, making it a renewable green building materials thus achieving environmental benefits. This study uses three water binder ratio (0.45,0.5,0.55), the Slag of Baosteel Slag Short Flow (SB) by different proportions (0%, 25%, 50%, 75%, 100%) to replace sand and slag portion fixed to replace 20% cement, mix made of composite cement mortar and fresh test(Slump flow、Setting time test), at age 3,7,28,56 and 91 days of hard solid test(Compressive strength、Ultrasonic pulse velocity、Thermal conductivity test), durability test(The resistance value、Auto clave and microwave catalytic、weight loss、high temperature catalytic test). The results showed that composite cement mortar Slump flow will increase by the amount of SB substituted and Water binder ratio rises, the amount of each substituted group were higher than the control (1.01 to 1.09 times)； Setting time along with Water binder ratio increased and extended. Compressive strength and ultrasonic velocity increases both the amount of the increase SB substitution；Thermal conductivity due to the substitution of the SB rise reduced from 0.65 to 0.92 times; The resistance value due to an increased amount of substitution of SB rise 1.02 to 1.58 times, and the resistance value with the increase of the Water binder ratio but lower；Auto clave and microwave catalytic test amount of expansion of both will increase the amount of the SB substituted rise, because SB contains free lime (f-CaO), after the reaction with water will swell behavior；weight loss in water binder ratio is 0.45 when substitution SB amounted to 100% of the minimum 1.13%, representing the best of its durability；high temperature catalytic amount of expansion increases the number of days which followed increases.