Performance of alkali-activated fly ash incorporated with GGBFS and micro-silica in the interfacial transition zone, microstructure, flowability, mechanical properties and drying shrinkage
Performance of alkali-activated fly ash incorporated with GGBFS and micro-silica in the interfacial transition zone, microstructure, flowability, mechanical properties and drying shrinkage
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DOI：
10.1063/1.5003517
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发表时间：
2017-09
期刊：
影响因子：
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通讯作者：
Y. Tajunnisa;M. Sugimoto;Takahiro Uchinuno;Takahiro Sato;Y. Toda;A. Hamasaki;T. Yoshinaga;K. Shida;M. Shigeishi
中科院分区：
文献类型：
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作者：
Y. Tajunnisa;M. Sugimoto;Takahiro Uchinuno;Takahiro Sato;Y. Toda;A. Hamasaki;T. Yoshinaga;K. Shida;M. Shigeishi
本文以低钙粉煤灰为研究对象，对碱激发材料进行了探讨。本研究以两种不同的低钙粉煤灰（分别来自日本电厂和印度尼西亚化肥厂，分别记为JFA和IFA）为原料，研究了碱激发水泥浆体的凝结时间和抗压强度。使用灰固结的糊剂需要最终凝固时间：JFA-灰糊剂-4.5-7天; IFA-灰糊剂-1.5-2天。随后的研究应用了将粒化高炉矿渣（GGBFS）和微硅（M）作为碱激发砂浆（AAM）中的JFA-灰替代物，以提高系统性能。研究揭示了在JFA-粉煤灰混合碱性溶液中掺入矿渣微粉（GGBFS）和M对流动性、抗压强度、抗折强度、干燥收缩、微观结构和界面过渡区（ITZ）性能的影响，重点讨论了低钙粉煤灰的碱激发材料。本研究以两种不同的低钙粉煤灰（分别来自日本电厂和印度尼西亚化肥厂，分别记为JFA和IFA）为原料，研究了碱激发水泥浆体的凝结时间和抗压强度。使用灰固结的糊剂需要最终凝固时间：JFA-灰糊剂-4.5-7天; IFA-灰糊剂-1.5-2天。随后的研究应用了将粒化高炉矿渣（GGBFS）和微硅（M）作为碱激发砂浆（AAM）中的JFA-灰替代物，以提高系统性能。研究了矿渣微粉和矿渣微粉在JFA-灰混合碱溶液中对水泥流动性、抗压强度、抗折强度、干缩率、微观结构和界面过渡区（ITZ）性能的影响。
This paper discusses alkali-activated material focusing on low calcium fly ash. The preliminary work investigated setting time and compressive strength of alkali-activated paste using two different of low calcium fly ash, one from the Power Plant in Japan, the other from a fertilizer plant in Indonesia, respectively denoted JFA and IFA. The paste which was consolidated using ash required the final setting times: JFA-ash paste - 4.5 - 7 days; IFA-ash paste - 1.5 - 2 days. This subsequent investigation applied incorporation of ground granulated blast furnace slag (GGBFS) and micro-silica (M) as JFA-ash replacement in Alkali-activated Mortar (AAM) to enhance system performance. The work reveals effects of GGBFS and M incorporated to JFA-ash mixed alkaline solution on flowability, compression, flexural strength, drying shrinkage, microstructure and Interfacial Transition Zone (ITZ) performance.This paper discusses alkali-activated material focusing on low calcium fly ash. The preliminary work investigated setting time and compressive strength of alkali-activated paste using two different of low calcium fly ash, one from the Power Plant in Japan, the other from a fertilizer plant in Indonesia, respectively denoted JFA and IFA. The paste which was consolidated using ash required the final setting times: JFA-ash paste - 4.5 - 7 days; IFA-ash paste - 1.5 - 2 days. This subsequent investigation applied incorporation of ground granulated blast furnace slag (GGBFS) and micro-silica (M) as JFA-ash replacement in Alkali-activated Mortar (AAM) to enhance system performance. The work reveals effects of GGBFS and M incorporated to JFA-ash mixed alkaline solution on flowability, compression, flexural strength, drying shrinkage, microstructure and Interfacial Transition Zone (ITZ) performance.