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Seismic Performance of RC Members Containing High Volume Coal Ash

高掺煤灰混凝土构件的抗震性能

基本信息

批准号：
11650587
负责人：
ARAKI Hideo
金额：
$ 1.47万
依托单位：
Hiroshima University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2000
项目状态：
已结题

项目摘要

Recycling the coal ash produced by coal-fired power plants is recently a very significant economic and environmental objective. Utilization of the coal ash, including both fly ash and cider ash, to reinforced concrete members for building structures is proposed in this research, in order to consume the large quantity of these products. Several experimental studies mentioned below were carried out to estimate the mechanical and the seismic characteristics of concrete and RC members containing high volume coal ash. Test results indicated that all specimens of each test had similar performance regardless of their high volume coal ash content. It is anticipated that there is strong possibility of using concrete containing high volume coal ash for RC building structures.1. Experimental study on mechanical properties of concrete containing high volume coal ash.Compression tests and splitting tests using concrete cylinders and compression loading tests using fullscaled concrete columns were carried out to estimate mechanical properties such as compression strength, tensile strength, Young's modulus, Poisson ratio and the influence of size effect.2. Experimental study on bond characteristics of concrete containing high volume coal ash.Series of a pull up test of a deformed steel bar which were inserted into a concrete cube were carried out to estimate bond characteristics.3. Experimental study on seismic performance of RC beams and columns containing high volume coal ash.Test specimens were RC beams and columns, which were both designed flexural failure type. The beams subjected cyclic (reversal) 2 point loadings. The columns subjected cyclic shear force under constant axial force.4. Experimental study on shear characteristics of RC columns containing high volume coal ash.RC columns designed shear failure type subjected cyclic shear force under constant axial force.

目前，回收燃煤电厂产生的灰渣是一个非常重要的经济和环境目标。为了消耗大量的建筑结构用钢筋混凝土构件，本研究提出了利用包括飞灰和苹果灰在内的灰渣用于建筑结构的钢筋混凝土构件。为评价高掺量粉煤灰混凝土和钢筋混凝土构件的力学性能和抗震性能，进行了以下几项试验研究。试验结果表明，每个试验的所有试件都具有相似的性能，无论其高掺量灰含量如何。预计在钢筋混凝土建筑结构中使用高掺量灰混凝土的可能性很大。通过大体积混凝土圆柱体的抗压、劈裂试验和足尺混凝土柱的抗压强度、抗拉强度、杨氏模量、泊松比等力学性能试验，研究了尺寸效应对混凝土力学性能的影响。大掺量粉煤灰混凝土粘结性能试验研究通过将一根变形钢筋插入混凝土立方体中进行一系列拉拔试验来评价粘结性能。大掺量粉煤灰混凝土梁柱抗震性能试验研究试验试件为钢筋混凝土梁柱，均设计为受弯破坏类型。梁承受循环(反转)2点荷载。在恒定轴力作用下，柱承受反复剪力。高掺量粉煤灰混凝土柱抗剪性能试验研究设计的抗剪破坏类型的钢筋混凝土柱在恒定轴力作用下承受反复剪力。