Mechanical Properties and Seismic Behavior of RC Members Containing High Volume Coal Ash

高掺煤灰混凝土构件的力学性能及抗震性能

基本信息

批准号：
13650630
负责人：
ARAKI Hideo
金额：
$ 1.73万
依托单位：
HIROSHIMA UNVIERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650630/
关键词：
coal ash new material building structure seismic performance environmental conservation full-scale test material property reinforced concrete 耐震施工建築付着せん断

项目摘要

Recycling of coal ash produced by coal-fired power plants is recently a very significant objective for the environmental conservation. Utilization of coal ash, including both fly ash and cider ash, to reinforced concrete (RC) members for building structures was proposed in this research, in order to consume the large quantity of this product. Experimental studies mentioned below were carried out to estimate mechanical and seismic characteristics of real size concrete and RC members containing high volume coal ash. Test results indicated that there was strong possibility of using concrete containing high volume coal ash for RC building structures.1. Distributions of material properties in a full-scale concrete column containing high volume coal ashMaterial tests of concrete cylinders sampled from a full-scale concrete column containing high volume coal ash by core borings were executed in order to estimate the distributions of mechanical properties in a real size column. Those results were compared with test results of concrete cylinders cured in standard procedures.2. Full-scale tests of RC columns containing high volume coal ashThree full-scale RC columns were constructed for this study, while considered parameters were coal ash content and concrete strength. Those columns, of which the section was 800mm square and the height was 2.4m, were designed as flexural failure types according to the current seismic code. Axial loading tests revealed that compressive characteristics of those columns were similar regardless of coal ash content. Test results of lateral loading tests confirmed that full-scale RC columns containing high volume coal ash had sufficient seismic performances, such as lateral strength, ductility and energy dissipation capacity.

燃煤电厂产生的粉煤灰的回收利用是近年来环境保护的一个非常重要的目标。本研究提出将粉煤灰（包括粉煤灰和苹果灰）用于建筑结构的钢筋混凝土（RC）构件，以消耗大量该产品。下面提到的实验研究是为了评估实际尺寸的混凝土和含有大量粉煤灰的 RC 构件的力学和地震特性。试验结果表明，RC建筑结构采用高掺量粉煤灰混凝土的可能性很大。 1．含有大量粉煤灰的原尺寸混凝土柱中材料性能的分布通过取芯钻孔从含有大量粉煤灰的原尺寸混凝土柱中取样，进行了混凝土圆柱体的材料试验，以估计实际力学性能的分布。尺寸栏。这些结果与标准程序养护的混凝土圆柱体的测试结果进行了比较。2．含有高含量粉煤灰的 RC 柱的全尺寸试验本研究建造了三个全尺寸 RC 柱，考虑的参数是粉煤灰含量和混凝土强度。该柱截面为800mm见方，高度为2.4m，按现行抗震规范设计为弯曲破坏型式。轴向载荷试验表明，无论煤灰含量如何，这些柱的压缩特性都是相似的。侧向荷载试验结果证实，含有高掺量粉煤灰的足尺RC柱具有足够的抗震性能，如侧向强度、延性和耗能能力。