Metakaolin is the anhydrous calcined form of the clay mineral kaolinite. Rocks that are rich in kaolinite are known as china clay or kaolin, traditionally used in the manufacture of porcelain. The particle size of metakaolin is smaller than cement particles, but not as fine as silica fume.

In this study, calcination of kaolin at 800˚C led to form the meta-kaolin, which is transient and more active and reacts easier than kaolin.

偏高岭土（metakaolin，简称MK）是以高岭土（Al2O3·2SiO2·2H2O , 简称AS2H2）为原料，在适当温度下（600～900 ℃）经脱水形成的无水硅酸铝（Al2O3 · 2SiO2 ， 简称AS2）。 高岭土属于层状硅酸盐结构，层与层之间由范德华键结合，OH - 离子在其中结合得较牢固。 高岭土在空气中受热时，会发生几次结构变化，加热到大约600 ℃时，高岭土的层状结构因脱水而破坏，形成 结晶度 很差的过渡相-偏高岭土。 由于偏高岭土的分子排列是不规则的，呈现热力学 介稳状态，在 …

Metakaolin is produced by firing Kaolin clay under carefully controlled conditions to create an amorphous aluminosilicate that is reactive in concrete [35]. Figure 4 shows the image of...

As one of the most promising building materials, the composite materials of metakaolin have a wide range of applications and excellent performance. Owing to the lack of research on the...

Metakaolin是一种高度反应性的陶瓷材料，通常呈白色粉末状。 其特点包括高度结晶性、高度氧化度、高度活性表面、高度粘结、高度吸附性。 Metakaolin的特性使其在多种领域中拥有广泛的应用。 Metakaolin被广泛用作水泥的混合物中的外加剂，以提高混凝土的强度、耐久性和抗裂性；在陶瓷工业中用作陶瓷材料的添加剂；在涂料行业中用作填料和增稠剂等。 Metakaolin通常是通过对高岭土（Kaolin）进行高温煅烧而制得的。 在高温下，高岭土中的水结构被分解，使其转变为结 …

메타카오린은 카올리나이트(Kaolinite)를 공기중에서 가열하여 (550-600℃) 생산하는 원료입니다. 가열시 흡열/탈수반응이 일어나면서 상변화가 발생하여 불규칙상이 메타카오린(Meta Kaolin)이 생성됩니다. 2Al2Si2O5(OH)4 →2Al2Si2O7 + 4H2O

Metakaolin is an amorphous aluminosilicate that is a highly reactive natural pozzolan produced by the calcination and dehydroxilation of kaolinitic clay at temperatures between 500°C and 900°C.

Metakaolin-based geopolymers are aluminosilicate materials that can be used as cationic dye adsorbents in aqueous system treatment. Our aim in this paper is to study the ability of geopolymer...