镍渣改性橡胶水泥砂浆性能试验研究  

Experimental Study on the Performance of Nickel Slag Modified Rubber Cement Mortar

作　　者：周敏 徐国宾 张蔚 牛冬瑜[3] 陈锋[4] 李永进 李广慧 ZHOU Min;XU Guobin;ZHANG Wei;NIU Dongyu;CHEN Feng;LI Yongjin;LI Guanghui(Fujian Academy of Building Research Co.,Ltd.,Fuzhou 350025,China;Fujian Provincial Key Laboratory of Green Building Technology,Fuzhou 350025,China;School of Materials Science and Engineering,Chang’an University,Xi’an 710061,China;Fujian Jiangxia University,Fuzhou 350025,China;Fujian University of Science and Technology,Fuzhou 350025,China)

机构地区：[1]福建省建筑科学研究院有限责任公司,福州350025 [2]福建省绿色建筑技术重点实验室,福州350025 [3]长安大学材料科学与工程学院,西安710061 [4]福建江夏学院工程学院,福州350025 [5]福建理工大学材料科学与工程学院,福州350025

出　　处：《粉煤灰综合利用》2025年第2期37-43,共7页Fly Ash Comprehensive Utilization

基　　金：2025年福建省环保科技计划项目(2025R018)。

摘　　要：利用人工加速老化、纳米压痕、RCM等测试方法,研究掺镍渣对橡胶水泥砂浆力学性能、耐久性能及微观性能的影响。结果表明:镍渣掺入及加速老化均能提高橡胶水泥砂浆的抗压强度、抗折强度、压折比及动弹性模量,且加速老化对高橡胶掺量水泥砂浆动弹性模量影响大;镍渣能改善橡胶水泥砂浆的耐磨性,当镍渣体积率为5%、橡胶体积率为15%时,磨坑长度最小;镍渣改善了橡胶水泥砂浆微界面区域弹性模量和硬度,使界面区的微观力学性能得到了提高;镍渣对橡胶水泥砂浆早期干燥收缩具有较好约束作用,同时有助于改善水泥砂浆抗氯离子渗透性能,当镍渣体积率为15%、橡胶颗粒体积率为5%时,水泥砂浆氯离子扩散系数最小。The effects of nickel slag on the mechanical properties,durability,and microscopic properties of rubber particle cement mortar was studied by artificial accelerated aging,nano-indentation,RCM and other testing methods.The results showed that the addition of nickel slag and accelerated aging can improve the compressive strength,flexural strength,compression bending ratio,and dynamic elastic modulus of rubber cement mortar,and accelerated aging has a significant impact on the dynamic elastic modulus of high rubber content cement mortar;Nickel slag can improve the wear resistance of rubber cement mortar.When the volume fraction of nickel slag is 5%and the volume fraction of rubber is 15%,the length of the grinding pit is minimized;Nickel slag improves the elastic modulus and hardness of the micro interface area of rubber cement mortar,enhancing the micro mechanical properties of the interface area;Nickel slag has a good restraining effect on the early drying shrinkage of rubber cement mortar,and also helps to improve the resistance of cement mortar to chloride ion penetration.When the volume fraction of nickel slag is 15%and the volume fraction of rubber particles is 5%,the chloride ion diffusion coefficient of cement mortar is the smallest.

关 键 词：镍渣 改性 橡胶水泥砂浆 纳米压痕 人工加速老化 

分 类 号：TU528[建筑科学—建筑技术科学]