Performance Evaluation of Concrete Using Waste-Molten Slag and Its Application for Restoration of Sea-Waters Environment

废熔渣混凝土性能评价及其在海水环境恢复中的应用

基本信息

批准号：
15360231
负责人：
SAKAI Koji
金额：
$ 4.8万
依托单位：
Kagawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15360231/
关键词：
Molten Slag Concrete Reinforced Concrete Beam Flexure Bond Strength Marine Environment Restoration Bottom Sediment Ultrasonic Waves 鉄筋コンクリート梁水域環境修復強度耐久性伝播速度

项目摘要

The purpose of this study is to clarify the mechanical properties of concrete and reinforced concrete using municipal garbage and industrial waste molten slag, to develop a non-destructive performance evaluation method and to examine the effect of the molten slag on the restoration of sea environment.Based on the experimental results regarding the physical and chemical properties of molten slag and the fresh property, strength and durability of concrete using molten slag, it was clarified that the molten slag is utilized as an aggregate for concrete. It was also concluded that the shape improvement of molten slag by rubbing-reformation has deceased the unit quantities of water and improved the compressive strength of concrete. In addition, the experimental results on the flexural and shear behaviour of reinforced concrete beams using molten slag showed that the molten slag can be applied for reinforced concrete members. It was also clarified that the use of molten slag has little effect on the bond stress - slip relationship of reinforcing bar in reinforced concrete beams using molten slag.Regarding the application of ultrasonic wave method for evaluating the performance of concrete, model tests and numerical analysis were conducted. However, the effect of the difference of boundary condition in ordinary aggregate and molten slag was not evaluated with ultrasonic waves.Regarding the improvement of marine environment, it was found that the adherent prey abundance of concrete using molten slag is about 7 times as much as that of concrete without molten slag, the fish aggregation has increased around the molten slag concrete and the concentration of chemical oxygen demand has decreased in bottom sediment. Therefore, it can be concluded that the molten slag is effective as the improvement materials of biological environment.

这项研究的目的是使用市政垃圾和工业废物澄清混凝土和钢筋混凝土的机械性能，以开发一种非破坏性绩效评估方法，并检查熔融炉灶对海上环境的恢复的影响。利用层状和化学性质的层状碎裂和化学性能，是层状和化学性质的层状，是熔融碎裂性和液化性，是熔融性的碎裂性和耐用性，是熔融的碎裂性，是层状的碎裂性。熔融炉灶被用作混凝土的骨料。还可以得出结论，通过摩擦改造的形状改善熔融炉灶已释放了单位水数量，并改善了混凝土的抗压强度。此外，使用熔炉对钢筋混凝土梁的弯曲和剪切行为的实验结果表明，熔融炉灶可用于钢筋混凝土成员。还阐明了使用熔融炉灶对使用熔融炉灶在钢筋混凝土束中加固杆的键应力的关系几乎没有影响。进行超声波法在评估混凝土，模型测试和数值分析的性能时的应用。然而，未通过超声波评估边界条件在普通聚集和熔融炉灶中的影响。在海洋环境的改善方面，发现使用熔融渣的固有的猎物的捕食丰度约为7倍，而没有熔融炉灶的混凝土，围绕混凝土的混凝土的底部散布降低了层状的繁殖型和化学效果。因此，可以得出结论，熔融炉渣是生物环境的改进材料有效的。