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.

回收燃煤电厂产生的粉煤灰近来是一个非常重要的经济和环境目标。本研究建议将粉煤灰（包括粉煤灰和苹果灰）用于建筑结构的钢筋混凝土构件，以消耗大量这些产品。下面提到的几项实验研究是为了评估含有大量粉煤灰的混凝土和 RC 构件的力学和地震特性。测试结果表明，尽管煤灰含量较高，但每次测试的所有样本都具有相似的性能。预计RC建筑结构采用高掺量粉煤灰混凝土的可能性很大。 1．高掺量粉煤灰混凝土力学性能试验研究。通过混凝土圆柱体的压缩、劈裂试验和足尺混凝土柱的压缩加载试验，评价其抗压强度、抗拉强度、杨氏模量、泊松比等力学性能。尺寸效应的影响；2．高掺量粉煤灰混凝土粘结特性的试验研究。通过将变形钢筋插入混凝土立方体进行一系列拉拔试验来评估粘结特性。 3．高掺煤灰RC梁、柱抗震性能试验研究。试件为RC梁、柱，均为弯曲破坏型式。梁承受循环（反向）2 点载荷。柱在恒定轴力作用下承受循环剪力。4．高掺煤灰RC柱剪切特性试验研究。RC柱设计了恒轴力作用下循环剪力作用下的剪切破坏类型。