期刊
JOURNAL OF SUSTAINABLE CEMENT-BASED MATERIALS
卷 11, 期 4, 页码 223-233出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/21650373.2021.1928565
关键词
Synchrotron radiation X-ray tomographic microscopy; solid segmentation; porosity; connected pore; open porosity
The concentration of NaOH solution and Na2SiO3 solution was found to be the key parameter affecting the morphology and properties of alkali-activated cement. Different activators led to different structures formation, with pore connections within the range of 0-50 mu m being the main parameter controlling thermal and physical properties.
Alkali-activated cement (AAC) produced with metakaolin and black rice husk ash was investigated. The characteristics, physical properties, and thermal properties were investigated. Porosity assessments were carried out using synchrotron radiation X-ray tomographic microscopy (XTM). The results revealed that the concentration of NaOH solution and Na2SiO3 solution was the key parameter which affected the morphology and properties of AAC. Particle-structures and prolonged structures were formed when using NaOH as an activator. However, stacked plate-like structures were observed when using Na2SiO3 together with NaOH. The amorphous phases of N-A-S-H gel and geopolymer were formed. XTM profiles showed that the pore volume decreased with increasing NaOH solution concentration and Na2SiO3 contents. The 3D images illustrated that the pore structures were occupied by pores less than 50 mu m in size. Pore connections within the range of 0-50 mu m were the main parameter which controlled the thermal and physical properties.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据