纳米材料改性超高性能混凝土材料性能研究进展  

Research Progress on Material Properties of Ultra-high Performance Concrete Modified by Nano-materials

作　　者：王林彬 周治国 毛骥 李伟 罗喜聪 WANG Lin-bin;ZHOU Zhi-guo;MAO Ji;LI Wei;LUO Xi-cong(Guangzhou Institute of Building Science Group Co.,Ltd.,Guangzhou 510000;Guangzhou Construction Co.,Ltd.,Guangzhou 510030;Guangzhou Municipal Engineering Testing Co.,Ltd.,Guangzhou 510520;Key Laboratory for Wind and Bridge Engineering of Hunan Province,College of Civil Engineering,Hunan University,Changsha 410082;China Railway Tunnel Group Co.,Ltd.,Guangzhou 510000)

机构地区：[1]广州市建筑科学研究院集团有限公司,广州510000 [2]广州建筑股份有限公司,广州510030 [3]广州市市政工程试验检测有限公司,广州510520 [4]湖南大学土木工程学院风工程与桥梁工程湖南省重点实验室,长沙410082 [5]中铁隧道局集团有限公司,广州510000

出　　处：《广州建筑》2025年第2期102-111,共10页GUANGZHOU ARCHITECTURE

基　　金：广州市建筑集团有限公司科技计划项目([2024]-KJ036);广州市建筑科学研究院集团有限公司科技进步资金项目(2024Y-KJ07、[2024]–KJ082)。

摘　　要：纳米材料改性超高性能混凝土(Ultra-high performance concrete,UHPC)具有优异的材料性能,为更系统地了解纳米改性UHPC,本文综述了有机纳米材料、无机纳米材料和金属纳米材料对UHPC材料性能的影响,介绍了纳米材料特性与种类形式,分别从小尺寸填充效应、表面晶核效应、钉扎效应及火山灰效应阐明了纳米材料增强UHPC性能的作用机理,梳理了国内外关于纳米材料改性UHPC动静态力学性能和耐久性能的研究进展。研究者们对材料性能进行了试验研究和模型分析,纳米改性UHPC的相关技术也有了一定程度的提升,但实际的研究中存在许多的影响因素和不确定性,尚未有完整的体系,如何将纳米改性UHPC结合实际工程需要应用于大型混凝土结构中,并提高材料经济性,仍存在一定的局限与技术问题。未来需要开发适合各种纳米材料改性UHPC材料性能测试与数据处理的简便方法,以实现复合材料各项性能优化提升。Nano-modified ultra-high performance concrete(UHPC)exhibits excellent material properties.To gain a more systematic understanding of nano-modified UHPC,this paper reviews the effects of organic nanomaterials,inorganic nanomaterials,and metallic nanomaterials on the material properties of UHPC.The characteristics and types of nanomaterials are introduced,and the mechanisms by which nanomaterials enhance UHPC performance are elucidated from the perspectives of small-size filling effect,surface nucleation effect,pinning effect,and pozzolanic effect.The research progress on the static and dynamic mechanical properties and durability of nano-modified UHPC,both domestically and internationally,is summarized.Researchers have conducted experimental studies and model analyses on material properties,and related technologies of nano-modified UHPC have been improved to a certain extent.However,there remain many influencing factors and uncertainties in practical research,and no complete system has been established.How to apply nano-modified UHPC to large-scale concrete structures in line with actual engineering needs while improving material economy still faces certain limitations and technical challenges.In the future,it is necessary to develop convenient methods for testing and data processing of various nano material modified UHPC materials,in order to optimize and improve the performance of composite materials.

关 键 词：纳米材料 超高性能混凝土 改性机理 动静态力学性能 耐久性能 

分 类 号：TU528[建筑科学—建筑技术科学]