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Wyszukujesz frazę "ground slag" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
The Investigation of Ground Granulated Blast Furnace Slag Geopolymer at High Temperature by Using Electron Backscatter Diffraction Analysis
Autorzy:
Aziz, Ikmal Hakem
Mohd Mustafa Al Bakri, Abdullah
Salleh, Mohd Arif Anuar Mohd
Yoriya, Sorachon
Rafiza, Abd Razak
Mohamed, Rosnita
Baltatu, Madalina Simona
Powiązania:
https://bibliotekanauki.pl/articles/2048835.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
geopolymer
ground granulated blast furnace slag
electron backscatter diffraction
Opis:
This paper elucidated the potential of electron backscatter diffraction analysis for ground granulated blast furnace slag geopolymers at 1000°C heating temperature. The specimen was prepared through the mechanical ground with sandpaper and diamond pad before polished with diamond suspension. By using advanced technique electron backscatter diffraction, the microstructure analysis and elemental distribution were mapped. The details on the crystalline minerals, including gehlenite, mayenite, tobermorite and calcite were easily traced. Moreover, the experimental Kikuchi diffraction patterns were utilized to generate a self-consistent reference for the electron backscatter diffraction pattern matching. From the electron backscatter diffraction, the locally varying crystal orientation in slag geopolymers sample of monoclinic crystal observed in hedenbergite, orthorhombic crystal in tobermorite and hexagonal crystal in calcite at 1000°C heating temperature.
Źródło:
Archives of Metallurgy and Materials; 2022, 67, 1; 227-231
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the ground granulated blast furnaceslag on the pore structure of concrete
Autorzy:
Chalid, Abdul
Powiązania:
https://bibliotekanauki.pl/articles/1853634.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wytrzymałość na ściskanie
struktura porów
beton
żużel wielkopiecowy
żużel mielony
żużel granulowany
porozymetria z intruzją rtęciową
compressive strength
pore structure
concrete
ground slag
granulated slag
blast furnace slag
site cured
mercury intrusion porosimetry
Opis:
The objective of this study is to analyze effect of ground granulated blast furnace slag (GGBFS) in concrete on the pore structure, this research will contribute to the knowledge regarding the use of GGBFS as a cementitious material in terms of the future reference and potential improvement to the properties of concrete. To this aim, on the one hand a control specimens (CS) and another samples with 40% and 60% of GGBFS as replacement cement with moist cured at 20°C, 27°C, and cured at site. The compressive strength and the Mercury intrusion porosimetry (MIP) test were done. The result indicates that the strength of concrete with GGBFS at early ages tend to be lower in comparison with the CS. However, the GGBFS reaction plays important roles at the later ages. The samples cured at higher temperature produce higher strength value. The total pore volume (TPV) of the concrete use GGBFS decreases with increasing age.
Źródło:
Archives of Civil Engineering; 2021, 67, 1; 203-214
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determining equivalent performance for frost durability of concrete containing different amounts of ground granulated blast furnace slag
Autorzy:
Wawrzeńczyk, J.
Juszczak, T.
Molendowska, A.
Powiązania:
https://bibliotekanauki.pl/articles/200482.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
equivalent concrete performance concept ECPC
frost durability
ground granulated blast-furnace slag
ggbfs
beton
wydajność
koncepcja ECPC
trwałość
mielony granulowany żużel wielkopiecowy
Opis:
This paper deals with the issues pertinent to the design of frost-resistant concretes in exposure class XF3 (high water saturation) when the concretes are made with cements containing ground granulated blast furnace slag (ggbs). The testing programme covered four series of non-air entrained concrete made with cements CEM I, CEM II/A-S, CEM II/B-S and CEM III/A containing 0%, 13%, 28% and 53% ggbs respectively, and two non-air entrained concrete series with the binder made from CEM I and 0 to 55% ggbs. The water-binder (w/b) ratio ranged from 0.25 to 0.55. Frost durability testing was performed using a modified ASTM C666A procedure to determine changes in mass (dm) and beam length (dL). The relationships occurring between the w/b ratio and ggbs content in the binder and the length change (dL) of the specimens were described using curvilinear regression functions, through the analysis of artificial neural networks. Slag-content-dependent critical values of the w/b ratio were determined taking the length change dL = 1.3 mm to be the criterion for the resistance to internal cracking. In the authors’ view, this approach can be a good method for checking equivalent performance of concretes made with cements containing mineral additions.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 4; 731-737
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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