Zobrazeno 1 - 10
of 112
pro vyhledávání: '"Toshifumi Sugama"'
Autor:
Tatiana Pyatina, Toshifumi Sugama
Publikováno v:
Materials
Volume 14
Issue 21
Materials, Vol 14, Iss 6679, p 6679 (2021)
Volume 14
Issue 21
Materials, Vol 14, Iss 6679, p 6679 (2021)
This study assessed the possibility of using polymethylhydrosiloxane (PMHS)-treated fly ash cenospheres (FCS) for formulating a thermally insulating and thermal shock (TS)-resistant cementitious blend with calcium aluminate cement. To prevent FCS deg
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba499c76cd87e5a1502e5bd705149a2a
https://pubmed.ncbi.nlm.nih.gov/34772203
https://pubmed.ncbi.nlm.nih.gov/34772203
Autor:
Toshifumi Sugama, Tatiana Pyatina
Publikováno v:
Cement and Concrete Composites. 99:1-16
This study assesses the ability of calcium aluminate phosphate (CAP)/fly ash F (FAF) blend composite to self-heal at early age; to re-adhere to the casing surfaces after debonding and to protect carbon steel (CS) against brine-caused corrosion before
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6466ae319fcfaa8c7042721cca7dd81f
https://doi.org/10.1016/j.cemconcomp.2019.02.011
https://doi.org/10.1016/j.cemconcomp.2019.02.011
Autor:
Toshifumi, Sugama, Tatiana, Pyatina
Publikováno v:
Materials; Volume 15; Issue 18; Pages: 6328
This paper presents the use of hydrophobic silica aerogel (HSA) and hydrophilic fly ash cenosphere (FCS) aggregates for improvements in the thermal insulating and mechanical properties of 100- and 250 °C-autoclaved calcium aluminate phosphate (CaP)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::518a1b6f44b84760bf2ed069713b8e9d
https://doi.org/10.3390/ma15186328
https://doi.org/10.3390/ma15186328
Publikováno v:
Advances in Cement Research. 30:8-23
The 10 d recoveries of the mechanical properties and crack sealing of an ordinary Portland cement (OPC) clinker/natural zeolite (ferrierite (Fer)) blend modified or unmodified with silica were tested at 270°C in water and alkali carbonate environmen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::387080d761a039839ab68ba9d933214a
https://doi.org/10.1680/jadcr.16.00136
https://doi.org/10.1680/jadcr.16.00136
Autor:
Tatiana Pyatina, Toshifumi Sugama
Publikováno v:
Geothermics. 96:102068
Cement-steel interface is a weak point of cement sheath integrity under the environments of high-temperature geothermal wells. This paper presents carbon steel (CS) adherence behaviors of 300 °C-autoclaved alkali-activated Calcium-Aluminate-Cement (
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::705b1946b9dffbe065cc532aff67bd86
https://doi.org/10.1016/j.geothermics.2021.102068
https://doi.org/10.1016/j.geothermics.2021.102068
Autor:
Tatiana Pyatina, Mathias C. Celina, Nicholas Henry Giron, Charles E. Harris, Toshifumi Sugama, Erica Marie Redline
Publikováno v:
Polymer Degradation and Stability. 146:317-326
Previous observation of EPDM and FEPM materials aged in thermo-oxidative and thermo-oxidative plus hydrolytic environments revealed an unusual trend: the degradation and disintegration of these polymers in the former case but the ability to maintain
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::62c9ab39feda11a082e1cc432563224e
https://doi.org/10.1016/j.polymdegradstab.2017.09.010
https://doi.org/10.1016/j.polymdegradstab.2017.09.010
Autor:
Tatiana Pyatina, Toshifumi Sugama
Publikováno v:
Engineering. :142-170
The study aims at evaluating the bond durability of a carbon microfiber (CMF)-reinforced alkali-activating calcium aluminate cement (CAC)/fly ash F (FAF) blend cementitious material adhering to carbon steel (CS) under stresses induced by a 350℃ hea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e8e09471542b853928753b3cbd6b3db
https://doi.org/10.4236/eng.2017.92007
https://doi.org/10.4236/eng.2017.92007
Autor:
Tatiana Pyatina, Toshifumi Sugama
Publikováno v:
Advances in Cement Research. 28:433-457
The short-term resistance to sulfuric acid at 90°C of four calcium aluminate cement (CAC)–fly ash class F (FAF) blends activated with sodium metasilicate (thermal shock resistant cements (TSRCs)), cured at 300°C, was compared to that of a calcium
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c9be2d4bb3e91a2448472b0e35578d9e
https://doi.org/10.1680/jadcr.15.00139
https://doi.org/10.1680/jadcr.15.00139
Autor:
Toshifumi Sugama, Tatiana Pyatina
Publikováno v:
Advances in Cement Research. 28:121-131
Thermal-shock resistance of high-content fly ash–Portland cement blends was tested in the following ways. Activated and non-activated blends with 80–90% fly ash F (FAF) were left to set at room temperature, then hydrated for 24 h at 85°C and the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2561183fe83b31ad796db182c1aff133
https://doi.org/10.1680/adcr.15.00030
https://doi.org/10.1680/adcr.15.00030
Autor:
Tatiana Pyatina, Toshifumi Sugama
Publikováno v:
Geothermics. 86:101840
This paper discusses self-healing ability, characterized by the strength recovery and crack sealing, thermal shock and acid resistance of several cementitious composites in water, alkali carbonate or geothermal brine at 300 °C. The tested formulatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c57593f442bae7fa433802369c314b88
https://doi.org/10.1016/j.geothermics.2020.101840
https://doi.org/10.1016/j.geothermics.2020.101840