复合矿物掺合料对超高性能混凝土性能的影响OA
Effect of Composite Mineral Admixtures on Properties of Ultra-high Performance Concrete
超高性能混凝土(ultra-high performance concrete,UHPC)不仅具有极高的力学性能,还具有良好的工作性能和耐久性能.然而,由于极低的水胶比和较高的水泥用量,UHPC面临着基体高自收缩和高成本挑战.为有效解决这一问题,利用工业副产品或废弃物取代部分水泥成为了一种可行的方法.该研究探讨了粉煤灰和偏高岭土以1∶1(质量比)比例混合作为复合矿物掺合料(composite mineral admixtures,CMA)替代UH…查看全部>>
Ultra-high performance concrete(UHPC)exhibits not only remarkable mechanical properties but also ex-cellent workability and endurance.However,UHPC confronts challenges of high self-shrinkage of the matrix and high cost due to the extremely low water-to-cement ratio and large cement quantity.In order to solve these problems effectively,a viable approach that industrial by-products or waste materials replace partial cement has emerged.The fly ash and metakaoli…查看全部>>
许珂
中铁十八局集团第五工程有限公司,天津 300450
土木建筑
超高性能混凝土复合矿物掺合料抗压强度微观形貌
ultra-high performance concrete(UHPC)composite mineral admixturescompressive strengthmicro morphology
《市政技术》 2023 (12)
256-261,6
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