Physical properties of crushed air-cooled blast furnace slag and numerical representation of its morphology characteristics |
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Authors: | Aiguo Wang Min Deng Daosheng Sun Bing Li Mingshu Tang |
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Affiliation: | 1. Anhui Key Laboratory of Advanced Building Materials, Anhui University of Architecture, Hefei, 230022, China 2. State Key Laboratory of Materials-Oriented Chemical Engineering, College of Materials Science and Engineering, Nanjing University of Technology, Nanjing, 210009, China 3. Sichuan Panzhihua Construction Engineering Quality and Safety Supervision Station, Panzhihua, 617000, China
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Abstract: | Physical properties and geometrical morphologies of crushed air-cooled blast furnace slag (SCR) and crushed limestone (LCR) were comparatively investigated. The shape, angularity, surface texture and internal pore structure of aggregate particles for different size and gradation were numerically represented by sphericity (ψ) and shape index (SI), angularity number (AN), index of aggregate particle shape and texture (IAPST), porosity and pore size, respectively. The results show that SCR is a porous and rough aggregate. Apparent density, void, water absorption and smashing index of SCR are obviously higher than those of LCR with the same gradation, respectively. However, bulk density of SCR is lower than that of LCR with the same gradation. SI, AN, IAPST and porosity of SCR are obviously higher than those of LCR with the same gradation, respectively. The smaller particle size of SCR, the larger of its AN, IAPST and porosity. |
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