超高性能水泥基材料的制备及其强度影响因素研究.pdf

粉煤灰综合利用 2013NO.2 FLY ASH COMPREHENSIVE UTILIZATION 专题研究 超高性能水泥基材料的制备及其强度影响因素研究 Study on the Preparation Methods of Ultra-high Performance Cement-based Material and its Strength Influence Factors 刘数华12，徐志惠2，张洁3，刘显军4 (1.建筑安全与环境国家重点实验室，北京100013； 2.武汉大学水资源与水电工程科学国家重点试验室，武汉430072； 3.湖北三箭建筑工程有限公司，随州441300； 4.随州九易通路桥公司随州，441300) 摘要：超高性能水泥基材料是继高强、高性能混凝土之后，出现的一种力学性能、耐久性能都非常优越的新型建筑 材料.本文通过大量试验，分析水胶比、粉煤灰、养护条件对超高性能水泥基材料抗压强度的影响，并采用扫描电镜 (EM)来探究矿物掺合料（主要是粉煤灰和玻璃粉）对硬化浆体微观形貌及水化产物影响的微观机理.研究结果表明： 超高性能水泥基材料的强度随水胶比的减小而增大；粉煤灰可以作为擦合料加人超高性能水泥基材料中，能改善RPC 微观结构，提高其性能；高温蒸养可显著提高超高性能水泥基材料的强度. 关键词：超高性能水泥基材料；强度；水胶比；粉煤灰；养护 中图分类号：TU528.31 文献标识码：A 文章编号：1005-8249(2013)02-0016-03 Liu Shuhua Xu Zhihui Zhang Jie Liu Xianjun (1.State Key Laboratory of Building Safety and Built Environment Beijing 100013; 2.State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan 430072; 3.Hubei Sanjian construction engineering Co.Ltd.Suizhou 441300: 4.Suizhou Jiuyitong Roads and Bridges Co.Ltd.Suizhou 441300) Abstract:The ultra-high performance cement-based material es after the high-strength and high-performance concrete. which is a new kind of building material with ultra-high mechanical properties and durability.In this paper a lot of tests have been done to study the impact of water-binder ratio fly ash curing condition on the strength and the microscopic mechanism by using scanning e- lectron microscopy (SEM).The testing results show:the strength of ultra-high performance cement-based ...