粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2010N0.1 掺粉煤灰水泥胶砂的正交试验研究* Research on Orthogonal Experiment of Cement Mortar Blended Fly Ash 赵鹏，王跃峰，王尉和，赵亚丽，姚彩珍，关博文 (长安大学材料科学与工程学院，陕西西安710054) 摘要：采用正交试验方法，研究了粉煤灰掺量、细度和Na2SO 掺量对水泥胶砂试块抗折、抗压强度影响规律.结 果表明：粉煤灰掺量对水泥胶砂试块的7d抗折、抗压强度影响最显著；粉煤灰掺量和粉煤灰细度对28d抗折、抗压强度 影响都比较显著：而Na2S0 掺量对7、28d抗折、抗压强度影响不大. 关键词：粉煤灰；正交试验；水泥胶砂；抗折强度；抗压强度 中图分类号：TQ177.6*2 文献标识码：A文章编号：1005-8249(2010)01-0031-03 Institute of Materials Science and Engineering Chang an University Xian 710054 China) Abstract:Using orthogonal experiment the effects of fly ash content fineness and the content of Naz SO.on folding and pressive strength (7 28d)of cement mortar are studied.The results show that the content of fly ash have the most prominent influence on 7d folding and coempressive strength of cement mortar;the content of fly ash and the fineness of fly ash have significant influence on28 d folding and pressive减trength of ce- ment mortar:yet the content of Na SO4 all along have little influenee on 7d 28d folding and pressive strength of cement mortar. Key words fly ash;orthogonal experiment;cement mortar;folding strength pressive strength 粉煤灰是煤粉经高温燃烧后形成的一种似火山灰煤灰细度、Na2SO4掺量3个因素为变量做水泥胶砂试 质混合材料.本文测试了粉煤灰掺量对水泥凝结时间块，脱模后放在标准恒温恒湿养护箱中（湿度95.0% 及安定性的影响；重点研究了粉煤灰掺量、粉煤灰细RH 温度19.5~20.5℃)养护，研究所选的3个因素 度、Na2S0掺量3个因素对水泥胶砂试块7、28d抗在因素水平范围内对水泥胶砂试块的7、28d抗折、抗 折、抗压强度的影响规律. 压强度影响规律. 表1陕西省某电厂粉煤灰的成分/% 1试验 Na0 MgO SiO K0 Ca0 Fe0 1.1试验原材料 试验原材料包括陕西省某电厂的粉煤灰， 0.17 0.1055.8635.711.803.353.01 PC32.5级水泥、Na2S...
掺粉煤灰水泥胶砂的正交试验研究.pdf
