Stress induced dissolution and time-dependent deformation of portland cement paste Academic Article

abstract

• 2018 Elsevier Ltd While the stress-induced dissolution of various minerals has gained attention as an important time-dependent deformation mechanism, this has only sparingly been investigated in portland cement systems. In this paper, X-ray Computed Tomography (XCT) is used to make direct observations of the microstructural evolution in cement paste samples under different levels of stress during their first 60 h of hydration. Stiffness and creep measurements are also made while imaging the changes in the microstructure. The results show that stress applied at ages between 24 h and 60 h caused an increase in stiffness, increase in early age creep, and a statistically higher amount of dissolution of individual particles near the point of load application.

authors

• Grasley, Zachary

published proceedings

• MATERIALS & DESIGN

author list (cited authors)

• Moradian, M., Ley, M. T., & Grasley, Z. C.

citation count

• 14

complete list of authors

• Moradian, Masoud||Ley, M Tyler||Grasley, Zachary C

publication date

• January 2018

publisher

• Elsevier  Publisher

published in

• Materials and Design  Journal

keywords

• Cement Hydration
• Creep
• Dissolution
• Microstructure Evolution
• X-ray Computed Tomography

Digital Object Identifier (DOI)

• 10.1016/j.matdes.2018.07.060

start page

• 314

end page

• 325

volume

• 157

URL

• http://dx.doi.org/10.1016/j.matdes.2018.07.060