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首页> 外文会议>SP-228; International Symposium on Utilization of High-Strength/High-Performance Concrete vol.1; 20050620-24; Washington,DC(US) >Properties of High-Performance Concrete Containing High Reactivity Metakaolin
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Properties of High-Performance Concrete Containing High Reactivity Metakaolin

机译：含高反应性偏高岭土的高性能混凝土的性能

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摘要

High Reactivity Metakaolin (HRM) is an engineered pozzolanic mineral admixture, reacting aggressively with calcium hydroxide which results in significant performance of concrete. HRM has been introduced to be a beneficial alternative for silica fume, required in the formulation of high strength/performance concrete. In this study, different aspects of concrete mechanical behaviors have been studied including compressive, flexural and splitting tensile strengths. Also some characteristics of concrete durability were investigated including water absorption, water penetration and gas permeability. In mixture proportioning, 5%, 10% and 15% of cement content is replaced by HRM or silica fume for comparative study. It was observed that both concrete with HRM and silica fume would perform almost the same in improving the mechanical properties of the materials. However in the case of workability and durability, a better performance was obtained in concrete with HRM. It was concluded from the investigation that HRM could be an appropriate substitute for silica fume in producing high performance concrete.
机译：高反应性偏高岭土（HRM）是一种工程化的火山灰矿物掺合料，能与氢氧化钙激烈反应，从而显着提高混凝土的性能。已引入HRM作为二氧化硅烟气的有益替代品，这是配制高强度/高性能混凝土所必需的。在这项研究中，研究了混凝土力学性能的不同方面，包括抗压，抗弯和抗拉强度。还研究了混凝土耐久性的一些特性，包括吸水率，透水性和透气性。在混合配比中，水泥含量的5％，10％和15％被HRM或硅粉代替，用于对比研究。观察到，具有HRM和硅粉的混凝土在改善材料的机械性能方面几乎具有相同的性能。但是，在可加工性和耐久性方面，使用HRM的混凝土可获得更好的性能。从调查中得出的结论是，HRM可以替代硅粉生产高性能混凝土。

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