著者

陣内 浩 黒羽 健嗣 並木 哲 黒岩 秀介 川端 一三 原 孝文 稲津 秀明 後藤 和正

出版者

日本建築学会

雑誌

日本建築学会技術報告集 (ISSN:13419463)

巻号頁・発行日

vol.5, no.9, pp.7-12, 1999

被引用文献数

23 14

---

Recently, high-rise reinforced concrete buildings 145 and 112 meter in height were constructed using high strength concrete with specified design strength of 100MPa. This paper deals with scheme of work execution and the results of quality control tests used in the construction of these buildings. In addition to the conventional quality control tests such as flow and air content measurements, a newly developed method of measuring the unit water content on flesh concrete was employed. As a result, high strength concrete with stable quality satisfying the design strength requirement was obtained.

著者

安部 武雄 古村 福次郎 戸祭 邦之 黒羽 健嗣 小久保 勲

出版者

日本建築学会

雑誌

日本建築学会構造系論文集 (ISSN:13404202)

巻号頁・発行日

vol.64, no.515, pp.163-168, 1999

被引用文献数

16 12

---

The mechanical properties of high strength concrete at high temperature have been studied experimentally. The compressive tests were carried out on three grades of concrete with standard design compressive strengths of 21,42 and 60MPa, respectively. The stress-strain curves for high strength concrete are quite different from those of normal strength concrete. For higher strength concrete under heating conditions below about 300℃, the initial slope is steeper, and the limit of linear response shows a higher percentage of the compressive strength. Also, the compressive strength decreases below 100℃ during heating, increases up to about the same strength of room temperature below 200℃ and gradually decreases with further increase of temperature.