A Study on Property of Cement Paste Using Equivalent Circuit Method

• Main Authors: YANG,JIA-WEI, 楊家偉
• Other Authors: LIN,PING-JU
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/c64rex

碩士 === 東南科技大學 === 營建與空間設計系營建科技與防災碩士班 === 105 === The objective of this study is to discuss the application of the ac impedance and vicat needle to the cement paste and water-cement ratio. there are four kinds of equivalent circuit plots in our simulation test. The results of our study show that it takes longer for initial setting and final setting if the ratio of cement paste and water-cement is higher. besides, it also contributes to the same effect if we add more fly ash and slag in the cement paste. furthermore, if the frequency range of the fly ash and slag cement paste is fixed at 10000hz, we found that the susceptance of ac impedance in our simulation test result will increase. the time is between 0 to 45 minutes and it is close to the final setting time in the vicat needle. on the other hand, we also used four kinds of equivalent circuit plot in our test, and we found that the results in mode1 and mode3 are close to the results of our simulation test, and the Rt(s+l)、Rs are also positively related to the quantities of fly ash and slag that we add in the cement paste.