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Start Over Author "Hiroshi Jinnai" Journal aij journal of technology and design
18 results on '"Hiroshi Jinnai"'

7. THE REALITY SURVEY OF READY-MIXED CONCRETE FACTORY ON RECOVERED AGGREGATE FOR CONCRETE AS BUILDING MATERIALS

Author

Yoshihiro Masuda, Sumie Suzuki, Tadatsugu Kage, Masanao Arai, Koichi Matsuzawa, Naoko Tsuchiya, Hiroyuki Tanano, Kazushi Tsujimoto, and Hiroshi Jinnai

Subjects
Ready mixed concrete, Engineering, Aggregate (composite), business.industry, Architecture, Factory (object-oriented programming), Building and Construction, Field survey, business, Civil engineering
Published
2019
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10. EXPERIMENTAL STUDY ON BASIC PERFORMANCE OF DEVICES WITH ELECTROMAGNETIC INDUCTION METHOD FOR THE MEASUREMENT OF COVER DEPTH OF REBAR

Author

Yutaka Yoshida, Kei Kato, Satoru Namiki, Hiroshi Jinnai, Kaoru Tsujiya, Mitsuo Nakamura, Masato Iijima, and Kouichi Sato

Subjects
Engineering, Cover (telecommunications), business.industry, law, Acoustics, Architecture, Range (statistics), Rebar, Building and Construction, Structural engineering, business, Electromagnetic induction, law.invention
Abstract

The performance of latest devices with electromagnetic induction method for the measurement of cover depth of rebar was confirmed by some experiments. The result is as follows. 1) The accuracy of latest devices was almost in the range of the standard value of JASS5T-608. 2) Mixture proportion of concrete and the age of specimen did not influence measurement values of latest devices with electromagnetic induction method.

Published
2010
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11. EXPERIMENTAL STUDY ON ACCURACY AND CORRECTION METHOD OF MEASUREMENT RESULTS OF DEVICES WITH ELECTROMAGNETIC INDUCTION METHOD FOR THE MEASUREMENT OF COVER DEPTH OF REBAR

Author

Yutaka Yoshida, Kei Kato, Kaoru Tsujiya, Hiroshi Jinnai, Masato Iijima, Kouichi Sato, Satoru Namiki, and Mitsuo Nakamura

Subjects
Engineering, Correction method, business.industry, law, B-Method, Architecture, Rebar, Cover (algebra), Building and Construction, Structural engineering, business, Electromagnetic induction, law.invention
Abstract

The survey accuracy of cover depth of rebar of RC member by the devices with electromagnetic induction method was confirmed by the experiment. As a result, it was shown that measurement of actual RC members was possible. In addition, there was the case that we have to use A method or B method of JASS5 T-608.

Published
2010
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12. TOP-DOWN CONSTRUCTION USING PRECAST ULTRA HIGH STRENGTH CONCRETE BASEMENT COLUMNS AND QUALITY CONTROL OF ACTUAL BUILDING OPERATIONS

Author

Tomohiro Terashima, Rieko Terauchi, Katsuhiko Ikeda, Atsushi Hattori, Keiki Yamamoto, Satoshi Watanabe, Hiroshi Jinnai, and Tetsuji Miyata

Subjects
Engineering, business.industry, media_common.quotation_subject, Excavation, Building and Construction, Top-down and bottom-up design, Structural engineering, Column (database), Civil engineering, Basement, Production planning, Precast concrete, Architecture, Quality (business), business, media_common, High strength concrete
Abstract

The top-down construction method using pre-cast concrete for basement columns is more effective in improved quality of concrete, shorter construction time and economy of labor compared with traditional top-down method, requiring no column construction under the ground floor after excavation. This paper first describes the production planning and the implementation of the top-down construction method applied to an actual high-rise building using pre-cast ultra high-strength concrete with a design strength of 100 MPa for basement columns. The paper then proceeds to report on the results of the quality control tests of the high-strength concrete.

Published
2009
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13. STUDY ON STRENGTH ADMINISTRATION OF 150MPa CONCRETE AND RESULTS OF QUALITY CONTROL OF ACTUAL BUILDING OPERATIONS

Author

Tsuyoshi Abe, Chiaki Otagiri, Rieko Terauchi, Satoshi Watanabe, Teruya Minami, Masato Iijima, Shusuke Kuroiwa, and Hiroshi Jinnai

Subjects
Engineering, business.industry, media_common.quotation_subject, Architecture, Control (management), Quality (business), Operations management, Building and Construction, business, Administration (government), Construction engineering, media_common
Published
2007
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