Three zones of full carbonation, partial carbonation, and noncarbonation were identified to investigate the changes in the mechanical properties of carbonated concrete. The porosity of each zone was measured using the mercury intrusion porosimetery (MIP) method. A three-layer inclusion model of composite materials was adopted to calculate the effective elastic modulus. The results of this study indicate carbonation reduces the porosity of concrete, hence compressive strength and elastic modulus increases with an increase in the degree of carbonation, but conversely for ductility. The effects of cement hydration and carbonation on the strength, porosity, and elastic modulus of concrete were identified. The effective elastic modulus E e calculated using the three-layer inclusion model of composite materials theory could accurately predict the elastic modulus of carbonated concrete specimens.
|Number of pages||7|
|Journal||ACI Materials Journal|
|Publication status||Published - 2005 Sept 1|
All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Building and Construction
- Materials Science(all)