Abstract
This paper describes a series of experiments in characterizing the pore systems of mature and hardened air-cured and water-cured concrete specimens. The characterization was achieved by measuring the real part of complex permittivity (ε′) and energy attenuation (dB/m) through continuous injection of pressurized fresh water over a period of 48 h in each test run. The measurements were based on coupling a 1 GHz Ground Penetrating Radar (GPR) on the surfaces of concrete specimens. At different degrees of water saturation (Sw) received by the specimens, the air-cured and water-cured concrete specimens were characterized by recognizing different patterns depicted in the plots of ε′ vs Swand dB/m vs Sw. These differences in patterns are attributed to the pore size distributions, as a result of different curing histories.
| Original language | English |
|---|---|
| Pages (from-to) | 250-256 |
| Number of pages | 7 |
| Journal | Construction and Building Materials |
| Volume | 22 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Mar 2008 |
Keywords
- Curing history of concrete
- Ground penetrating radar
- Pore system of concrete
- Water
ASJC Scopus subject areas
- Civil and Structural Engineering
- Building and Construction
- Materials Science(all)