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首页> 外文会议>Canadian Society for Civil Engineering annual conference >THE EFFECT OF GROUND GRANULATED BLAST FURNACE SLAG AND SILICA FUME ON THE DURABILITY OF HIGH PERFORMANCE CONCRETE IN BRIDGE DECKS
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THE EFFECT OF GROUND GRANULATED BLAST FURNACE SLAG AND SILICA FUME ON THE DURABILITY OF HIGH PERFORMANCE CONCRETE IN BRIDGE DECKS

机译：地面粒状高炉炉渣和二氧化硅烟气对桥梁高性能混凝土耐久性的影响

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摘要

High-performance concrete typically has a low water to cementing materials ratio (w/cm), high binder content and may contain high levels of supplementary cementitious materials. The effects of ground granulated blast furnace slag (GGBFS) and silica fume (SF) on the durability of HPC were investigated. In this study, HPC mixtures at 0.33 w/cm were made with two sources of blended cements containing 8% SF mixed with 25 and 50% GGBFS replacements by mass of cement. The compressive strength, drying shrinkage, thermal deformation and transport properties were tested. The preliminary test results have shown that increased fineness of the blended cement enhances the transport and mechanical properties), but results in increased early age thermal deformation, drying shrinkage, leading to increased cracking potential.
机译：高性能混凝土通常具有低水量的胶结材料比（W / cm），高粘合剂含量，并且可能含有高水平的补充水泥材料。研究了地面粒状高炉炉渣（GGBF）和二氧化硅烟气（SF）对HPC耐久性的影响。在该研究中，使用含有8％SF的混合水泥的两个混合水泥来制备0.33W / cm的HPC混合物，用25％和50％GGBFS替代水泥。测试抗压强度，干燥收缩，热变形和运输性能。初步试验结果表明，混合水泥的细度增加了增强的运输和机械性能），但导致较高的初龄次热变形，干燥收缩，导致裂解潜力增加。

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