Estimating the Workability of Concrete with a Stereovision Camera during Mixing.

Autor: Ojala, Teemu¹ (AUTHOR) jouni.punkki@aalto.fi, Punkki, Jouni¹ (AUTHOR)

Publikováno v: Sensors (14248220). Jul2024, Vol. 24 Issue 14, p4472. 23p.

Stability of Air Content in Fresh Concretes with PCE-Based Superplasticizers

Autor: Al-Neshawy Fahim, Ojala Teemu, Punkki Jouni

Publikováno v: Nordic Concrete Research, Vol 60, Iss 1, Pp 145-158 (2019)

Air contents of concrete are necessary for concrete durability in freeze-thaw exposure. According to the Finnish concrete code, the target value for air content varies between 4% and 5.5% for XF - exposure classes. Lately in Finland, some cases showe

Externí odkaz: https://doaj.org/article/486832c506754ce79e6745e063f5b649

Characteristics of Entrained Air Voids in Hardened Concrete with the Method of Digital Image Analysis Coupled with Schwartz-Saltykov Conversion

Autor: Ojala, Teemu, Chen, Yanjuan, Punkki, Jouni, Al-Neshawy, Fahim

Publikováno v: Materials, Vol 14, Iss 2439, p 2439 (2021)
Materials
Volume 14
Issue 9

This paper presents the characteristics of air void systems in hardened concrete with the method of digital image analysis (DIA) coupled with Schwartz-Saltykov (SS) conversion. The results indicate that the DIA method coupled with SS conversion estim

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::77c627455d77a0680148b82e07788017
https://www.mdpi.com/1996-1944/14/9/2439

Design, construction, and NDT of a mock-up for reinforced concrete walls in NPP

Autor: Al-Neshawy, Fahim, Ferreira, Rui Miguel, Bohner, Edgar, Ojala, Teemu, Sjöblom, Ville, Niederleithinger, Ernst, Effner, Ute, Puttonen, Jari

Publikováno v: Al-Neshawy, F, Ferreira, R M, Bohner, E, Ojala, T, Sjöblom, V, Niederleithinger, E, Effner, U & Puttonen, J 2019, Design, construction, and NDT of a mock-up for reinforced concrete walls in NPP . in SMiRT 25, August 4-9, 2019, Charlotte, NC, USA : Division IX . International Association for Structural Mechanics in Reactor Technology IASMiRT, 25th International Conference on Structural Mechanics in Reactor Technology, SMiRT 25, Charlotte, North Carolina, United States, 4/08/19 .

Construction methods, environmental stressors, and aging factors are the main causes for defects of reinforced concrete in nuclear power plants (NPP). These defects are typically occurred as corrosion of reinforcement steel, delamination, cracks, mal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=355e65625b88::19da36f0e09c45635d9a0671ad8a4e2f
https://cris.vtt.fi/en/publications/e3c1880b-fe65-4153-9223-71f2c5988b19

Omstart! – Näytelkää kuin tähdet! Yleisölähtöisen improvisaation ulottuvuudet speksiesityksissä

Autor: Ojala, Teemu

Pro gradu -tutkielmani aiheena ovat speksiproduktiot, korkeakouluopiskelijoiden tuottamat musiikilliset komediaesitykset, joita maustavat aloitteellisen yleisön kannustamat improvisaatio-osuudet. Toisin kuin muissa teatterin lajeissa, speksin yleis�

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______4853::7fb74eee8e837125384d180a3df2c484
https://trepo.tuni.fi/handle/10024/96683