Basic study on relation between flatness of end of high strength concrete specimen and compressive strength

被引：0
|
作者：
Koyama Y. [1 ,2 ]
Hayakawa M. [3 ]
Jinnai H. [4 ]
Nakamura M. [2 ]
机构：
[1] Graduate School of Eng., Tokyo Polytechnic Univ.
[2] Tokyo Kensa Co., Ltd., Construction Materials Laboratory
[3] Dept. of Architecture, Faculty of Eng., Tokyo Polytechnic Univ.
[4] Technology Center, Taisei Corp.
来源：
Journal of Structural and Construction Engineering | 2010年 / 75卷 / 649期
关键词：
Compressive strength; Flatness measurement; High strength concrete; Specimen;
D O I：
10.3130/aijs.75.475
中图分类号：
TU528 [混凝土及混凝土制品]; TV43 [水工混凝土和砂浆];
学科分类号：
摘要：
In this research, the relation between the flatness of the end of the high strength concrete specimen and its compressive strength was examined The results of the examination are shown as follows. (1) The flatness of the end of the specimen can be evaluated by measuring 17 points with a device shown in JIS A 5308. (2) Flatness of the end of the specimen will change with the time passing. Therefore, specimens should be ground just before the strength test. (3) Every flatness of the end of the grounded specimen was within the limits regulated in JIS A 1132. (4) In this experiment, compressive strength decreased as the roughness of the end of the specimen increased. (5) In this experiment, the influence of the flatness on the strength reduction rate increased with the rise of the compressive strength level.
引用
收藏
页码：475 / 481
页数：6
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