Zobrazeno 1 - 10
of 175
pro vyhledávání: '"silica reactivity"'
Publikováno v:
Case Studies in Construction Materials, Vol 18, Iss , Pp e02093- (2023)
The fine aggregate of siliceous rock has the advantages of high production efficiency, stable yield and low construction and transportation cost. The Yangxi concrete dam was firstly apply siliceous rock as fine aggregate to a large concrete project o
Externí odkaz:
https://doaj.org/article/859b9e9013b14b218ff35d3f61c96898
Autor:
Matthew Coffie Wilson, Bridget Buadi, Maame Opokua Debrah, Kevin Osei-Wireko, Blestmond Afrifa Brako
Publikováno v:
Geological Behavior, Vol 6, Iss 1, Pp 22-28 (2022)
This paper seeks to assess the potential of Alkali-Silica Reaction on some granitic rocks in Kumasi in Ghana. Alkali-Silica reactions occur over time between alkaline cement paste and silica contained in rock aggregates as a result of the swelling du
Externí odkaz:
https://doaj.org/article/5a32dbd5f5b44e50818c2066b11cb1fa
Autor:
Andrea Saccani, Stefania Manzi
Publikováno v:
Crystals, Vol 12, Iss 5, p 646 (2022)
Alkali–silica reactions were set off in cementitious mortars in different curing conditions, simulating short-term tests on reactivity. The investigated composites differed in some of their microstructural features. The total open porosity was modu
Externí odkaz:
https://doaj.org/article/4e2c3e32a671472b99533d16306abf13
Autor:
Enzo Moretto, Chuanyu Yan, Reiner Dieden, Pascal Steiner, Benoît Duez, Damien Lenoble, Jean-Sébastien Thomann
Publikováno v:
Polymers, Vol 14, Iss 9, p 1676 (2022)
Silica fillers are used in various nanocomposites in combination with silanes as a reinforcing filler. In tire technology, silica is generally functionalized before (pre-treated) or during mixing (in-situ silanization or post-treated). In both cases,
Externí odkaz:
https://doaj.org/article/8702312552414d0eb51577af1465895d
Publikováno v:
Materials, Vol 14, Iss 12, p 3346 (2021)
In this study, an investigation of the shear behavior of full-scale reinforced concrete (RC) beams affected from alkali–silica reactivity damage is presented. A detailed finite element model (FEM) was developed and validated with data obtained from
Externí odkaz:
https://doaj.org/article/a2008859fffb4be3838eea6a839833d7
Publikováno v:
Materials, Vol 13, Iss 15, p 3273 (2020)
This study focuses on two separate investigations of the main aging mechanisms: alkali–silica reactivity (ASR) and the corrosion of reinforcing steel (rebar) concrete, both of which may result in a premature failure to meet the serviceability or st
Externí odkaz:
https://doaj.org/article/5d65ddf7afaf4472a50ed742316312b3
Akademický článek
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Akademický článek
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Autor:
Kaffayatullah Khan, Muhammad Nasir Amin, Muhammad Umair Saleem, Hisham Jahangir Qureshi, Majdi Adel Al-Faiad, Muhammad Ghulam Qadir
Publikováno v:
Materials, Vol 12, Iss 16, p 2603 (2019)
This study focuses on evaluating the effect of the fineness of basaltic volcanic ash (VA) on the engineering properties of cement pozzolan mixtures. In this study, VA of two different fineness, i.e., VA fine (VF) and VA ultra-fine (VUF) and commercia
Externí odkaz:
https://doaj.org/article/cb6ced80bfb148d78c0657ee4b573bc2
Publikováno v:
Infrastructures, Vol 3, Iss 3, p 17 (2018)
Metakaolin is the only major natural pozzolan to be specified for use as a supplementary cementitious material in the United States. As a result, the metakaolin market for concrete has grown dramatically in the past 20 years. As of now, the specifica
Externí odkaz:
https://doaj.org/article/5b6588dfc02d497e8dfd9b9a977bb454