Evolution of Portland Cement Mechanical Properties exposed to CO2-rich fluids: investigation at different scales
Year: 2011
Type: book-chapter
Abstract: Macroscopic scratch tests and nano-indentation grid tests on carbonated Portland cement pastes are reported. A chemical analysis (Electron Probe Micro Analysis) is also briefly presented. The scratch tests probe the macroscopic evolution of the material failure properties between the un-reacted and carbonated parts of the samples, while grid of nano-indentation tests investigate the material evolution at a smaller scale. The results are put in perspective via a micro-poroelastic analysis. The material becomes stiffer and stronger macroscopically with carbonation while a large re-organization of the microstructure takes place at small scale. MOTIVATIONS The interest in carbon dioxide (CO 2 ) geological storage as well as enhanced-oil recovery applications via CO 2 injection has grown steadily in recent years. The sealing proper-
Source: HAL
Language: English
Subfield: Civil and Structural Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W1934773008