Journal
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
Volume 25, Issue 2, Pages 328-331Publisher
JOURNAL WUHAN UNIV TECHNOLOGY
DOI: 10.1007/s11595-010-2328-5
Keywords
concrete; limestone powder; microstructure; filling effect; hydration characteristic
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Funding
- Specialized Research Fund for the Doctoral Program of Higher Education of China [200804861060]
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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/m(3) 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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