Direct observation of C3S particle dissolution using fast nano X-ray computed tomography

被引：14

作者：

Li, Xiaodan ^{[1
]}

Hu, Qinang ^{[1
]}

Robertson, Bret ^{[1
]}

Ley, M. Tyler ^{[1
]}

Andrade, Vincent Joseph De ^{[2
]}

Sokhansefat, Ghazal ^{[1
]}

机构：

[1] Oklahoma State Univ, Sch Civil & Environm Engn, Stillwater, OK 74078 USA

[2] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA

来源：

CEMENT AND CONCRETE RESEARCH | 2023年 / 166卷

关键词：

X-ray; Microstructure; Induction period; Hydration; C; 3; S; C-S-H; PORTLAND-CEMENT SYSTEMS; TRICALCIUM SILICATE; ISOTHERMAL CALORIMETRY; HYDRATION KINETICS; CROSS-CORRELATION; INDUCTION PERIOD; MICROSTRUCTURE; MICROTOMOGRAPHY; SEGMENTATION;

D O I：

10.1016/j.cemconres.2023.107097

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper uses a sequence of 3D images at a 50 nm pixel size to study the dissolution behavior of tricalcium silicate (C3S) particles with a water to solids ratio of 1.10 from 18 min to 7 h of hydration. 550 particles with dimensions ranging from 0.41 mu m to 12 mu m were directly observed. The results suggest that C3S particles have different dissolution rates with time; however, the dissolution rate seems to correlate well with the particle surface area and is independent of the particle size. These findings provide insights into the behavior of C3S materials and are an important step in understanding and modeling the dissolution of these materials.

引用

页数：18

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