Výsledky vyhledávání - "Tomoya, Nishiwaki"

Akademický článek

Non-destructive testing of reinforced concrete structures using sub-terahertz reflected waves

Autor: Chihiro Kobayashi, Tomoya Nishiwaki, Tadao Tanabe, Takahiro Oohashi, Hitoshi Hamasaki, Shuya Hikishima, Akio Tanaka, Koji Arita, Sho Fujii, Daisuke Sato, Takeshi Kidokoro

Publikováno v: Developments in the Built Environment, Vol 18, Iss , Pp 100423- (2024)

Terahertz (THz) and sub-terahertz (sub-THz) waves are unexplored waves between the infrared and microwave ranges. This range features unique characteristics of both light resolution and electromagnetic wave transmission. Sub-THz waves are part of att

Externí odkaz: https://doaj.org/article/ce291025d90746e3afccdd40f395d09e

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Akademický článek

A New Methodology to Estimate the Early-Age Compressive Strength of Concrete before Demolding

Autor: Bayarjavkhlan Narantogtokh, Tomoya Nishiwaki, Fumiya Takasugi, Ken Koyama, Timo Lehmann, Anna Jagiello, Félix Droin, Yao Ding

Publikováno v: Buildings, Vol 14, Iss 7, p 2099 (2024)

Non-destructive testing has many advantages, such as the ability to obtain a large number of data without destroying existing structures. However, the reliability of the estimation accuracy and the limited range of applicable targets remain an issue.

Externí odkaz: https://doaj.org/article/5964bf7bf71b49459ae484b64b362f0b

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Akademický článek

Fundamental Properties of Sub-THz Reflected Waves for Water Content Estimation of Reinforced Concrete Structures

Autor: Akio Tanaka, Koji Arita, Chihiro Kobayashi, Tomoya Nishiwaki, Tadao Tanabe, Sho Fujii

Publikováno v: Buildings, Vol 14, Iss 4, p 1076 (2024)

Water plays a significant role in the deterioration of reinforced concrete buildings; therefore, it is essential to evaluate the water content of the cover concrete. This study explores a novel non-destructive method for assessing the water content u

Externí odkaz: https://doaj.org/article/8154b24923234fc1a39b877589170e60

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Akademický článek

Current Issues and Questionnaire Survey of Cold Weather Concreting in Mongolia

Autor: Bayarjavkhlan Narantogtokh, Tomoya Nishiwaki, Dinil Pushpalal

Publikováno v: Buildings, Vol 12, Iss 8, p 1262 (2022)

Ulaanbaatar, the capital of Mongolia, is the coldest capital city in the world with limited available time for executing concrete works due to the cold climate. The cold season raises not only technical issues, but also socio-economic issues, for exa

Externí odkaz: https://doaj.org/article/0cad3698cdf64eb3a35a353e3f4b9870

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