轻质水泥基多孔材料的制备及基本性能研究  

Study on preparation and basic properties of lightweight cement-based porous materials

作　　者：郭盼盼 张云升[2] 宁瑶瑶 GUO Panpan;ZHANG Yunsheng;NING Yaoyao(Shandong Jianda Engineering Appraisal and Reinforcement Research Institute,Jinan 250013,China;School of Materials Science and Engineering,Southeast University,Nanjing 211189,China)

机构地区：[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

出　　处：《新型建筑材料》2020年第10期147-152,共6页New Building Materials

基　　金：国家自然科学基金项目(51178106)。

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。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.

关 键 词：水泥基多孔材料 矿物掺合料 影响因素 性能研究 

分 类 号：TU528.2[建筑科学—建筑技术科学]