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Grey correlation analysis between strength of slag cement and particle fractions of slag powder
Affiliation:1. Department of Civil and Environmental Engineering, University of California, Berkeley, CA 94720, USA;2. Department of Civil Engineering, Middle East Technical University, 06800 Ankara, Turkey;3. School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan 689-798, Republic of Korea;4. Civil Engineering Program, Department of Mechanical Engineering, State University of New York at Stony Brook, NY 11794, USA;5. Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA
Abstract:The particle size distributions of slag powder were investigated by Laser Scatter equipment. The influence of particle fractions of slag powder on the compressive strength of slag cement composed of 50% slag powder and 50% Portland cement was also studied by the method of grey correlation analysis. The results indicated that the volume fraction of particles 5–10 μm had a maximum positive effect on the mortar compressive strength of slag cement at 7 d and the volume fraction of particles 10–20 μm had a maximum positive effect on the mortar compressive strength at 28 d, whereas the volume fraction of particles larger than 20 μm had a negative effect on the mortar compressive strength at 7 and 28 d.
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