Velázquez Sergio, Monzó José M, Borrachero María V, Payá Jordi
Facultad de Ingeniería, Universidad Panamericana Campus Guadalajara, Prolongación Calzada Circunvalación Poniente No. 49, 54010 Zapopan, Mexico.
Instituto de Ciencia y Tecnología del Hormigón (ICITECH), Universitat Politècnica de València, Camino de Vera s/n, 46071 Valencia, Spain.
Materials (Basel). 2014 Nov 21;7(11):7533-7547. doi: 10.3390/ma7117533.
The use of methods based on measuring electrical conductivity to assess pozzolanic activity has recently been used primarily in aqueous suspensions of pozzolan: calcium hydroxide. However, the use of similar methods in suspensions of cement with pozzolans has not been widely studied. This paper proposes a new method for rapid assessment of the pozzolanic activity of mineral admixtures in aqueous cement suspensions. In this study, the conditions for the application of the method were optimized, such as time, temperature, / ratio and dosage procedure. Finally, results are presented from the application of this method for characterizing the pozzolanic activity of the spent catalytic cracking catalyst. These results corroborate as previously reported, namely the high reactivity of this pozzolan obtained by other methods, such as thermogravimetry or evolution of the mechanical strength. In addition, the pozzolanic activity of the catalyst was compared with other pozzolans such as metakaolin and silica fume.
基于测量电导率来评估火山灰活性的方法，近来主要用于火山灰与氢氧化钙的水悬浮液中。然而，在含有火山灰的水泥悬浮液中使用类似方法的研究尚未广泛开展。本文提出了一种快速评估水硬性水泥悬浮液中矿物掺合料火山灰活性的新方法。在本研究中，对该方法的应用条件进行了优化，如时间、温度、比例和添加程序。最后，给出了应用该方法表征废催化裂化催化剂火山灰活性的结果。这些结果证实了先前的报道，即通过其他方法（如热重分析法或机械强度演变）得到的该火山灰具有高反应活性。此外，还将该催化剂的火山灰活性与偏高岭土和硅灰等其他火山灰进行了比较。
