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轻质水泥基多孔材料的制备及基本性能研究
作者：郭盼盼1，张云升2，宁瑶瑶1
（1.山东建大工程鉴定加固研究院，山东 济南 250013；2.东南大学 材料科学与工程学院，江苏 南京 211189）
摘要：研究了水胶比、成型温度、双氧水掺量及矿物掺合料粉煤灰、硅灰种类和掺量对水泥基多孔材料物理力学性能和耐久性能的影响。试验结果表明，在水胶比为0.55～0.60、成型温度为45～50 ℃、双氧水掺量为5.0～5.5%时，制备的水泥基多孔材料性能最佳；在密度为250 kg/m3时，抗压强度为0.70 MPa、抗拉强度为0.15 MPa、吸水率为13.18%。单掺时粉煤灰和硅灰的最佳掺量分别为15%和3%；相同掺量时掺加硅灰具有较好的力学性能，而掺加粉煤灰具有较好的耐久性。
关键词：水泥基多孔材料；矿物掺合料；影响因素；性能研究
中图分类号：TU528.2 文献标识码：A 文章编号：1001-702X（2020）10-0147-06
Study on preparation and basic properties of lightweight cement-based porous materials
GUO Panpan1，ZHANG Yunsheng2，NING Yaoyao1
（1.Shandong Jianda Engineering Appraisal and Reinforcement Research Institute，Jinan 250013，China；
2.School of Materials Science and Engineering，Southeast University，Nanjing 211189，China）
Abstract：The effects of water-binder ratio，molding temperature，hydrogen peroxide content and mineral admixture（fly ash，silica fume） and content on the physical properties，mechanical properties and durability of cement-based porous materials were studied systematically. It is determined that the properties of cement-based porous materials are the best when the water-binder ratio is 0.55～0.60，the molding temperature is 45～50 ℃，and the content of hydrogen peroxide is 5.0%～5.5%. When the density is 250 kg/m3，it can reach compressive strength 0.70 MPa，tensile strength 0.15 MPa and water absorption 13.18%. The results show that the optimum content of fly ash and silica fume is 15% and 3% respectively. The addition of silica fume with the same content has better mechanical properties，while the addition of fly ash has better durability.
Key words：cement-based porous materials，mineral admixture，influencing factors，performance study