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Predecessor
Volume 43, Issue 3
Displaying 1-9 of 9 articles from this issue
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Y. Uchida, Y. Tanaka, M. Katagiri, J. Niwa2005 Volume 43 Issue 3 Pages 3-8
Published: March 01, 2005
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSThe research report has been published as “Recommendations for Design and Construction of Ultra High Strength Fiber Reinforced Concrete Structures, -Draft (2004).” by Concrete Committee of Japan Society of Civil Engineers (JSCE). Ultra high-strength fiber reinforced concrete (hereafter called “UFC”) has far greater compressive (>150 N/mm2) and tensile strength (>5 N/mm2) than ordinary concrete. The recommendations prescribe a procedure for examining safety and serviceability performance, which differs from the conventional design system for reinforced concrete, in consideration of the resistance to tensile stress of UFC. The structures using UFC are expected to demonstrate high durability. The recommendations determine that the standard lifespan is 100 years under normal conditions and the examination of many items regarding durability is not required. Since UFC has a self-compacting ability, the vibration for compaction is not required in casting and molding. The recommendations have provisions for unique and important notices in construction because UFC contains reinforcing fibers.View full abstractDownload PDF (1146K) -
S. Ushijima2005 Volume 43 Issue 3 Pages 9-18
Published: March 01, 2005
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSThe structural reform is requested in the execution of the construction business. There is EMS (Environmental Manegement System) as one of the strategies by which the problem can be solved. The meanings and the content of EMS as usefull soft technology are described in this repot. We aretargeted in EMS and the following were taken up. (1) Environmental assessment, (2) Big and line structures of influence such as roads on environment, (3) It is a dam as the landscape structure thought to exert a big influence on the ecosystem, (4) Assessment of life cycle of structure, (5) Notes concerning spectacle of structure.View full abstractDownload PDF (1931K) -
M. Hamada, K. Sato, Y. Mori, A. Ogata2005 Volume 43 Issue 3 Pages 19-27
Published: March 01, 2005
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSThe tunnel reinforcement method of construction used with steel arch supporting and inner lining together is proposed and the indoor experiment using the imitation tunnel is stated. The contents of an indoor experiment are construction possibility check experiment (Section 5) and loading experiment for checking the reinforcement effect (Section 6). As a result of an experiment and analysis, construction possibility and the reinforcement effect of this reinforcement method of construction were checked.View full abstractDownload PDF (5228K) -
T. Matsuda, A. Satoh, J. Salcamoto, Y. Watanabe2005 Volume 43 Issue 3 Pages 28-36
Published: March 01, 2005
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSIn this paper, abrasion test and impacting test had been examined, and the relationship between compressive strength and the ability of resistance to tribology was researched for investigating the effect of the mix proportion of concrete to the ability of tribology resistance. In this examination, compressive strength of 40, 60, 80 and 100 N/mm2 had been applied to the specimen, and the 40 N/mm2 strengthened specimen and 60 N/mm2 strengthened specimen had also been made with heavyweight aggregate. In addition, the LCC of wave-erased concrete was calculated by using the experimental results of this examination and the measured abrasion value of structure on ocean environment, and the mix proportion of concrete good for wave-erased concrete block was proposed.View full abstractDownload PDF (19479K) -
H. Kanada, Y. Ishikawa, T. Uomoto2005 Volume 43 Issue 3 Pages 37-44
Published: March 01, 2005
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSMany non-destructive inspection methods have recently been developed for concrete structures. However, these methods can obtain only physical information of concrete, such as crack depth, delamination or position of reinforcement etc. near its surface. A remote non-destructive method that can detect deterioration factors such as carbonation, chloride content or sulfate attack would be an outstanding innovation in inspection methodologies. In this research, remote non-destructive material detection of concrete was attempted using NIR spectroscopy. This enables us to obtain chemical information of concrete by just sensing reflected near-infrared rays from the measuring plane. Dispersed near-infrared rays through the spectroscope can be received in each wavelength by light-sensitive elements on NIR CCD camera. Finally, distribution or concentration of the target component can be observed as an image. This paper describes the detection method of carbonation, chloride and sulfate attack as examples. Applicability of this method for inspection has been corroborated by experimental results.View full abstractDownload PDF (24684K) -
[in Japanese], [in Japanese], [in Japanese], [in Japanese]2005 Volume 43 Issue 3 Pages 46-51
Published: March 01, 2005
Released on J-STAGE: April 26, 2013
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]2005 Volume 43 Issue 3 Pages 52-56
Published: March 01, 2005
Released on J-STAGE: April 26, 2013
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[in Japanese], [in Japanese], [in Japanese], [in Japanese]2005 Volume 43 Issue 3 Pages 57-63
Published: March 01, 2005
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSDownload PDF (13392K) -
[in Japanese]2005 Volume 43 Issue 3 Pages 64-69
Published: March 01, 2005
Released on J-STAGE: April 26, 2013
JOURNAL FREE ACCESSDownload PDF (14284K)
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