Leaching and Compression Tests of Mortar Specimen

• Main Authors: Chia-lun Wu, 吳佳倫
• Other Authors: Cho-liang Tsai
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/03926563968007448661

碩士 === 雲林科技大學 === 營建工程系碩士班 === 99 === Efflorescence can be found frequently in the environment of nowadays and is a annoying problem. Eliminating efflorescence is a head-splitting issue in building construction. Inhibitors of efflorescence are developed one after another. This research studies and observes mortar specimens with and without efflorescence inhibitor for their leaching and compression behaviors and variation. There are two main goals of research for this research. The first is decreasing of leaching rate by weight due to the inhibitor. High decreasing of leaching rate meaning that the inhibitor is more effective in reducing dissolvable substance released from mortar and is more effective in eliminating efflorescence. The second is reduction of compression strength of the mortar. One of the side effects of the inhibitor is reduction of the mortar strength. Technically, keeping the reduction of compression strength as smaller as possible is critical to maintain the function of the mortar. The results of this research reveal that the decreasing of leaching rate of the mortar specimen with two different inhibitors is around 18% lower than that of the mortar without inhibitor, and reduction of compression strength is around 6% higher. The inhibitors are verified to be effective in eliminating efflorescence and keep the reduction of strength low. According to presented publications, if the inhibitor can decrease the leaching rate by 15%, it can eliminate efflorescence effectively.