TY - JOUR
T1 - Characterization of microstructure evolution of cement paste by micro computed tomography
AU - He, Yong Jia
AU - Mote, Jason
AU - Lange, David A.
N1 - Funding Information:
Foundation item: Project(2009CB623201) supported by the National Basic Research Program of China; Projects(50902106, 51272193) supported by the National Natural Science Foundation of China; Project(NCET-10-0660) supported by New Century Excellent Talents in Universities of China Received date: 20120512; Accepted date: 20121220 Corresponding author: HE Yong-jia, Associate Professor, PhD; Tel: +8613349834985; E-mail: [email protected]
PY - 2013/4
Y1 - 2013/4
N2 - Micro computed tomography (Micro-CT) was applied to obtain three-dimensional images of the microstructure of cement paste (water-to-cement mass ratio of 0.5) at different ages. By using the Amira software, component phases of the cement paste such as pores, hydration products, and unhydrated clinker particles were segmented from each other based on their 3D image grey levels; their relative contents were also calculated with the software, and the data are 61.2%, 0% and 38.8% at the beginning of hydration and 11.8%, 78.5% and 9.7% at 28 d age, respectively. The hydration degree of cement paste at different ages was compared with the experimental data acquired by loss on ignition (LOI) tests. The results show that the calculated and measured data reasonably agree with each other, which indicates that micro-CT is a useful and reliable approach to characterize the micro structure evolution of hydrating cement paste.
AB - Micro computed tomography (Micro-CT) was applied to obtain three-dimensional images of the microstructure of cement paste (water-to-cement mass ratio of 0.5) at different ages. By using the Amira software, component phases of the cement paste such as pores, hydration products, and unhydrated clinker particles were segmented from each other based on their 3D image grey levels; their relative contents were also calculated with the software, and the data are 61.2%, 0% and 38.8% at the beginning of hydration and 11.8%, 78.5% and 9.7% at 28 d age, respectively. The hydration degree of cement paste at different ages was compared with the experimental data acquired by loss on ignition (LOI) tests. The results show that the calculated and measured data reasonably agree with each other, which indicates that micro-CT is a useful and reliable approach to characterize the micro structure evolution of hydrating cement paste.
KW - 3D image
KW - Micro computed tomography (Micro-CT)
KW - cement paste
KW - microstructure
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U2 - 10.1007/s11771-013-1592-x
DO - 10.1007/s11771-013-1592-x
M3 - Article
AN - SCOPUS:84890293963
SN - 2095-2899
VL - 20
SP - 1115
EP - 1121
JO - Journal of Central South University
JF - Journal of Central South University
IS - 4
ER -