摘要
近些年纳米材料在水泥基材料中的研究日益增多,其中纳米CaCO_(3)作为在许多领域生产和使用最多的纳米材料之一,在水泥基材料中应用前景广阔。为研究液体纳米CaCO_(3)(LNC)对砂浆性能的影响,本文选取不同LNC掺量,研究其对砂浆工作性能、力学性能、水化行为及微观结构的影响。结果表明:掺加LNC后,砂浆流动度随LNC掺量的增加呈先增大后减小的趋势;掺加LNC可以提高砂浆的抗折与抗压强度,在3.0%(质量分数)掺量LNC时,3 d抗折与抗压强度比基准组分别提高了14.29%和32.51%;LNC通过小尺寸效应和晶核效应可以提高砂浆的密实度,促进水化反应进行,改善孔隙结构。
The research of nanomaterials in cementitious materials has been increasing in recent years,among which nano-CaCO3,as one of the most produced and used nanomaterials in many fields,has a promising application in cementitious materials.In order to investigate the effect of liquid nano-CaCO3(LNC)on mortar properties,different LNC content was selected to study its effects on mortar workability,mechanical properties,hydration behavior and microstructure.The results show that after adding LNC,the mortar fluidity shows a tendency of increasing and then decreasing with the increase of LNC content.Addition of LNC improves the flexural and compressive strength of the mortar,and the flexural and compressive strength at 3 d are increased by 14.29%and 32.51%,respectively,compared with the baseline group at 3.0%(mass fraction)LNC content.LNC improves the densification of cementitious materials through small size effect and nucleation effect,promotes the hydration reaction to proceed,and improves the pore structure.
作者
孙久业
孙倩
王冬梅
杨仁和
李佳琪
荣辉
郭义兵
张鹏宇
SUN Jiuye;SUN Qian;WANG Dongmei;YANG Renhe;LI Jiaqi;RONG Hui;GUO Yibing;ZHANG Pengyu(School of Materials Science and Engineering,Tianjin Chengjian University,Tianjin 300384,China;Tianjin Building Materials Science Research Academy Co.,Ltd.,Tianjin 300381,China)
出处
《硅酸盐通报》
北大核心
2025年第8期2771-2780,共10页
Bulletin of the Chinese Ceramic Society
基金
天津市科技计划项目(24YFYSHZ00240)。
作者简介
孙久业(2000-),男,硕士研究生。主要从事绿色低碳建材的研究。E-mail:sunjiuye100@163.com;通信作者:荣辉,博士,教授。E-mail:huirongtcu@126.com;通信作者:孙倩,正高级工程师。E-mail:syjky2008@126.com。
