...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of marine science and technology >A STUDY OF STATISTICAL MODELS APPLICATION FOR MIXTURE OF HIGH-FLOWING CONCRETE
【24h】

A STUDY OF STATISTICAL MODELS APPLICATION FOR MIXTURE OF HIGH-FLOWING CONCRETE

机译：统计模型在高流动混凝土混合料中的应用研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

High flowing concrete (HFC) is defined as a concrete that exhibits a high deformability and a good resistance to segregation. The grade of workability for HFC is concrete slump flow that between 50 to 70 cm. In the research, 21 statistically balanced concrete mixtures were investigated by statistical models, and discussed further the workability, strength and durability properties of concrete, which are responded by granulated ground blastfurnace slag (GGBS), Fly ash, water-binder ratio (w/b) and superplasticizer (sp). The Box-Wilson central composite design (CCD) method is used in this study. The total binder content is 375 kg/m~3, and four independent variables such as percentage of GGBS as cement replacement (20 to 50% by mass), percentage of Fly ash as cement replacement (15 to 35% by mass), w/b (0.39 to 0.45) and percentage of SP (1.0 to 1.4 by binder mass) are used for the design of HFC mixtures. The fresh properties of mortar and concrete, mechanical properties and durability characteristics of concrete are measured. Finally, the concrete slump flow model, T~(50), 7-, 28- and 90-day compressive strength model, the RCP (rapid chloride permeability) model, and Carbonation model are developed successfully. The proposed response models of HFC offer useful information regarding the mixture optimization.
机译：高流动性混凝土（HFC）被定义为表现出高变形性和良好的抗偏析性的混凝土。 HFC的可加工性等级为50至70 cm之间的混凝土坍落度。在研究中，通过统计模型对21种具有统计平衡的混凝土混合物进行了研究，并进一步讨论了混凝土的可加工性，强度和耐久性能，这些由颗粒状高炉矿渣（GGBS），粉煤灰，水灰比（w / b）和高效减水剂（sp）。本研究使用Box-Wilson中央复合设计（CCD）方法。粘合剂的总含量为375 kg / m〜3，四个独立变量为：GGBS替代水泥的百分比（20至50质量％），粉煤灰替代水泥的百分比（15至35％质量），w / b（0.39至0.45）和SP的百分比（粘合剂质量为1.0至1.4）用于设计HFC混合物。测量了砂浆和混凝土的新鲜性能，混凝土的机械性能和耐久性能。最后，成功建立了混凝土坍落度流动模型，T〜（50），7、28、90天抗压强度模型，RCP（快速氯离子渗透性）模型和碳化模型。提议的HFC响应模型提供了有关混合物优化的有用信息。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号