不同颗粒细度的复合掺合料对混凝土性能的影响  

Influence of Composite Admixtures with Different Particle Fineness on Concrete Performance

作　　者：岳光亮 谢瑞兴 郭文倩 彭立刚 唐樱燕 莫立武[3] YUE Guang-liang;XIE Rui-xing;GUO Wen-qian;PENG Li-gang;TANG Ying-yan;MO Li-wu(Shandong Zhongsen New Material Co.,Ltd.,Jinan,Shandong,250000,China;Shandong Zhongsen Technology Co.,Ltd.,Jinan,Shandong,250000,China;Key Laboratory of Materials Chemical Engineering,School of Materials Science and Engineering,Nanjing Tech University,Nanjing,Jiangsu,210009,China)

机构地区：[1]山东众森新材料有限公司,山东济南250000 [2]山东众森科技股份有限公司,山东济南250000 [3]南京工业大学材料科学与工程学院材料化学工程重点实验室,江苏南京210009

出　　处：《建材技术与应用》2021年第4期6-10,共5页Research and Application of Building Materials

基　　金：国家重点研发计划(2019YFC1907100)。

摘　　要：采用SMΦ500 mm×500 mm型试验磨粉磨制备不同颗粒细度的复合掺合料,研究不同细度的复合掺合料对混凝土工作性能、力学性能的影响,结果表明,当水泥细度为45μm方孔筛筛余10.5%,复合掺合料细度为45μm筛余5.6%时,配制的C30混凝土坍落度达到了240 mm,扩展度达到了580 mm,28 d强度达到41.6 MPa,并对其进行微观结构分析,充分说明了混凝土胶凝材料颗粒级配的连续性对混凝土工作性能和力学性能的促进作用。Using the composite admixtures with different particle fineness prepared by grinding with SMΦ500 mm×500 mm type test mill,this paper studies the influence of different fineness of composite admixtures on the workability and mechanical properties of concrete.The results show that when the fineness of cement 45μm sieve residue is 5%,and the fineness of composite admixture 45μm sieve residue is 6%,the slump of C30 concrete reaches 240 mm,the expansion reaches 580 mm,and the 28 d strength reaches 41.6 MPa.In addition,the paper analyzes the microstructure of the material and it concludes that the continuity of particle size distribution of cementitious materials can promote the workability and mechanical properties of concrete.

关 键 词：混凝土复合掺合料 颗粒级配 工作性能 力学性能 微观结构 

分 类 号：TU526[建筑科学—建筑技术科学]