Investigation of the Dimensional Stability in DSP Cement Paste

In the second half of this work, thermal expansion property was systematically investigated for cement pastes with a wide range of microstructure features. It was found that saturated paste behaves anomalouly in response to temperature change, i.e., the thermal expansion is followed by a time-dependent delayed contraction at isothermal condition. This characteristic was found to be related to the pore structure and the elastic properties of the paste. A permeability-based mechanism was proposed to quantitatively explain the observed thermal deformation, and was used successfully to model the delayed contraction and calculate the permeability coefficient of mature, dense cement paste in the order 10 -16 m/s.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Materials Science and Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2015

Author dc:creator

• Ai, Hua

Contributors dc:contributor

• J. Francis Young

• Engineering, Materials Science

Language dc:language

eng

Identifier

(MiAaPQ)AAI9989924

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/82933