高溫高壓蒸汽養護對TAICON火害後性質之研究

Abstract

本研究之主要目的在探討經過各種不同條件之高溫高壓蒸汽養護TAICON和一般標準組之TAICON在各種火害溫度測試後，其力學行為的差異。 研究結果顯示：高溫高壓蒸汽養護的溫度越高，其試體的抗壓強度就越高。而火害後，所有試體的抗壓強度均隨火害溫度的增高而遞減，其中以高溫高壓蒸汽養護180℃者強度折減率最低、標準組次之。波速和試體燒透所需的時間則分別與抗壓強度成正比和反比關係。彈性模數方面顯示：經過高溫高壓蒸汽養護者在火害後，其彈性模數剩餘百分率均較一般養護者為少。 在SEM試驗則可以從微觀方面得知，當火害溫度越高時，其微觀結構則呈現越多的孔隙，且水化產物也因火害而分解導致強度的降低。

The major aim of the Study is to explore the mechanical behavior difference between TAICON under high-temperature & high-pressure steam curing and TAICON of general standard group after various kinds of fire damage temperature tests. The research result shows: the higher the high-temperature & high-pressure steam curing temperature is, the higher is the pressure resistance strength of its specimen. After a fire damage, the pressure resistance strength of all specimen decreases accordingly in accompany with the increase of fire damage temperature, among which, the strength deduction rate of the high-temperature & high-pressure steam curing temperature at 180°C is the lowest one, and the standard group is ranked next to it. The wave speed and required time for complete combustion of specimen are respectively in positive ratio and negative ratio with pressure resistance strength. The elastic module shows: concerning the one through high-temperature & high-pressure steam curing after a fire damage, its residual elastic module percentage is normally less than that through general curing. In SEM test, it can be understood from micro observation aspect that, as the temperature of fire damage is higher, more perforated crevices tend to appear in its micro observation structure, and the hydrated product also dissolves due to fire damage to lead to the decline of strength.