Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Osamu Machinaga is active.

Publication


Featured researches published by Osamu Machinaga.


Nippon Kagaku Kaishi | 1998

Synthesis of Calcium Ferrite Monosulfate Hydrate and Rehydration of Its Thermally Treated Intermediates.

Satoshi Tanaka; Osamu Machinaga; Yoshio Aoyama

カルシウムフェライトモノサルフェート水和物 (以下, CFMSHと略記する) の加熱分解過程の検討, およびCFMSH熱処理物の再水和実験を行い, 再水和による層状構造の再構築性について検討し, Hydrotalciteの場合と比較した.原料の配合モル比 [CaO/Fe2(SO4)3] 7.0の条件で得られた生成物 (CFMSHとCaSO4・2H2Oの混合物) を40℃の温水で洗浄することで, CFMSH結晶の単一相が生成したことをXRDとFT-IRによって確認した. TA, XRDおよびFT-IRの結果より以下のことがわかった. CFMSHを400℃まで加熱することにより, CFMSHの層状構造が崩壊した. 610℃において, 2CaO・Fe2O3, CaSO4およびCaOが結晶化した. 1200℃以上の温度において, CaSO4結晶中のSO3が脱離した. 熱処理温度1200℃以下の温度で熱処理された試料の再水和生成物は, 熱処理前試料と同様の結晶構造を示した. それゆえ, 再水和法による最初の層状構造の再構築可能な熱処理温度範囲は, スピネル生成によって制約をうけるHydrotalciteに比べ, CFMSHのそれのほうが広範囲であった. 熱処理温度1400℃で熱処理された試料の再水和生成物は, Ca(OH)2.とCa3Fe2(OH)12であった.


Journal of the Society of Inorganic Materials,Japan | 2011

Lowering Autoclave Curing Temperature of High Strength Mortar Containing Silica Fume

Shin Yamaguchi; Shigeo Koshikawa; Osamu Machinaga; Masami Uzawa; Yoshinari Itoh


Journal of The Ceramic Society of Japan | 2014

A novel synthesis of phosphorus-substituted tobermorite with calcium silicate hydrate

Shinnosuke Kamei; Takashi Ihara; Takaaki Ouchi; Masami Uzawa; Osamu Machinaga


Journal of The Society of Materials Science, Japan | 2013

Fundamental Study on Low-Temperature Autoclaving Focused on the Water Cement Ratio and Silica Fume Content

Shin Yamaguchi; Masami Uzawa; Naofumi Iwasaki; Yoji Ogawa; Yoshinari Itoh; Osamu Machinaga


Inorganic Materials | 2000

Challenge to Lime

Osamu Machinaga


Journal of The Ceramic Society of Japan | 1996

Synthesis and Characteristic Feature of 4CaO⋅Al2O3⋅Fe2O3-Based Glass with and without SiO2

Eisuke Suzuki; Naomitsu Tsuyuki; Yoshio Aoyama; Osamu Machinaga


Bunseki Kagaku | 1994

Determination of fluoride in gypsum by the alizarine complexone photometric method and ion chromatography.

Noriko Nakayama; Osamu Machinaga; Yoshio Aoyama


publisher | None

title

author


Inorganic Materials | 2005

Influence of Sulfate Anion on Immobilization Behavior of Cr(VI) by Calcium Alumino-Ferrites

Minoru Morioka; Keisuke Nakamura; Satoshi Tanaka; Osamu Machinaga; Hiroyuki Sango; Yoshio Aoyama


Inorganic Materials | 2001

Synthesis of 3CaO·Al 2 O 3 and Hauyne Incorporating Magnesium and Their Hydration in Gypsum Coexistence

Satoshi Tanaka; Hiromi Sayama; Toshihiro Kamiyoshihara; Osamu Machinaga

Collaboration


Dive into the Osamu Machinaga's collaboration.

Top Co-Authors

Avatar

Yoshio Aoyama

College of Industrial Technology

View shared research outputs
Top Co-Authors

Avatar

Junichi Kasai

College of Industrial Technology

View shared research outputs
Top Co-Authors

Avatar

Masami Uzawa

College of Industrial Technology

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Eisuke Suzuki

College of Industrial Technology

View shared research outputs
Top Co-Authors

Avatar
Top Co-Authors

Avatar

Takaaki Ouchi

College of Industrial Technology

View shared research outputs
Top Co-Authors

Avatar

Takashi Ihara

College of Industrial Technology

View shared research outputs
Researchain Logo
Decentralizing Knowledge