Modeling on the hydration and leaching of eco-friendly magnesium oxychloride cement paste at the micro-scale
Artikel i vetenskaplig tidskrift, 2019

Magnesium oxychloride cement (MOC) has been considered as a kind of eco-friendly cement in view of its significantly low calcination temperature and large capacity of carbon dioxide sequestration, compared with ordinary Portland cement (OPC). In this work, a computer model is established to simulate the hydration and leaching of MOC paste at the micro-scale. The composition of MOC paste in the ultimate hydration is investigated based on the thermodynamic method, and pore structure obtained from the computer simulation is compared with the one from experiments and literature, respectively. The simulated leaching results show that the original solid phase skeleton of MOC paste decomposes into magnesium hydroxide crystals. It is demonstrated that the simulation results are in good agreement with experimental data from literature and the proposed simulation can provide an effective method to reveal the hydration and leaching mechanism of MOC paste.

Modeling

Leaching

Thermodynamic

Microstructure

Hydration

Magnesium oxychloride cement

Författare

Shengwen Tang

Wuhan University

Yang Hu

Wuhan University

Wang Ren

Wuhan University

Peng Yu

Wuhan University

Qing Huang

Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province

Chinese Academy of Sciences

Qinghai Institute of Salt Lakes Chinese Academy of Sciences

Xiaoying Qi

Wuhan University

Ying Li

Key Laboratory of Salt Lake Resources Chemistry of Qinghai Province

Qinghai Institute of Salt Lakes Chinese Academy of Sciences

Chinese Academy of Sciences

Teresa E Chen

Chalmers, Arkitektur och samhällsbyggnadsteknik, Konstruktionsteknik

Construction and Building Materials

0950-0618 (ISSN)

Vol. 204 684-690

Ämneskategorier

Samhällsbyggnadsteknik

Kemiteknik

DOI

10.1016/j.conbuildmat.2019.01.232

Mer information

Senast uppdaterat

2019-02-28