| 利用原状磷石膏制备石膏基复合胶凝材料的力学性能 |
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| 引用本文： | 张毅,王小鹏,李东旭. 利用原状磷石膏制备石膏基复合胶凝材料的力学性能[J]. 陶瓷科学与艺术, 2011, 0(1) |
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| 作者姓名： | 张毅 王小鹏 李东旭 |
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| 作者单位： | 南京工业大学材料科学与工程学院材料化学工程国家重点实验室; |
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| 基金项目： | “十一五”国家科技支撑计划(2006BAJ04A04-02) |
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| 摘 要： | 以未经处理的原状磷石膏制备磷石膏基复合胶凝材料,测试磷石膏基复合胶凝材料的力学性能,考察生石灰的掺量、水灰比以及成型压力对磷石膏基复合胶凝材料力学性能的影响。结果表明:当生石灰掺量为4%时,磷石膏-矿渣复合胶凝材料具有较好的力学性能,矿渣微粉对磷石膏-粉煤灰复合胶凝材料的力学性能有增强作用。对于磷石膏-矿渣-炉渣复合胶凝材料,当成型压力超过3 MPa时,制备的材料力学性能明显下降。同浇注成型试样相比较,在5 MPa成型压力下的压实成型试样,材料孔隙率提高,特别对于200 nm以上孔所占体积分数来说,其所占体积分数要远远高于浇注成型试样,导致了材料微观结构劣化,力学性能变差。
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| 关 键 词： | 磷石膏 复合胶凝材料 力学性能 孔结构 |
Mechanical property of phosphogypsum based composite cementing material prepared with original phosphogypsum |
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| ZHANG Yi,WANG Xiaopeng,LI Dongxu. Mechanical property of phosphogypsum based composite cementing material prepared with original phosphogypsum[J]. Ceramics Science & Art, 2011, 0(1) |
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| Authors: | ZHANG Yi WANG Xiaopeng LI Dongxu |
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| Affiliation: | ZHANG Yi,WANG Xiaopeng,LI Dongxu(State Key Laboratory of Materials-Oriented Chemical Engineering,College of Materials Science and Engineering,Nanjing University of Technology,Nanjing 210009,China) |
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| Abstract: | Original untreated phosphogypsum was used to prepare a kind of phosphogypsum based cementing material,the mechanical property of the prepared material was tested and effects of quicklime content,water/cement ratio and molding pressure on the mechanical property were investigated.The results showed that with the quicklime content of 4%,the phosphogypsum slag composite cementing material had a good mechanical property,slag power had a positive correlation with the mechanical property of the phosphogypsum fly ... |
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| Keywords: | phosphogypsum composite cementing material mechanical property pore structure |
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