Effect of limestone powder on microstructure of concrete |
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| Authors: | Shuhua Liu and Peiyu Yan |
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| Affiliation: | (1) Microlab, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Delft, The Netherlands;(2) Magnel Laboratory for Concrete Research, Department of Structural Engineering, Ghent University, Technologiepark-Zwijnaarde 904, Zwijnaarde, Ghent, 9052, Belgium;(3) ACE-MRL, Department of Civil and Environmental Engineering, University of Michigan, Ann Arbor, MI, USA |
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| Abstract: | The effect of limestone powder on microstructure of concrete was studied by using mercury intrusion porosimetry (MIP), backscattering
scanning electron(BSE), scanning electron microscopy (SEM) and X-ray diffraction (XRD) techniques. The experimental results
show that the compressive strength of concrete containing 100 kg/m3 limestone powder can meet the strength requirement. Limestone powder has not pozzolanic activity; it is still unhydrated
at the age of 28 days. But its filling effect can make the paste matrix and the interfacial transition zone between matrix
and aggregate denser, which will improve the performance of concrete. |
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