scholarly journals Preparation and characterization of coal gangue modified road asphalt

2021 ◽  
Vol 781 (4) ◽  
pp. 042033
Author(s):  
Shuang Yao ◽  
Liang Zhao ◽  
Jiayi Yang ◽  
Hong Jiang ◽  
Yunxi Nan
Keyword(s):  
Coal Gangue ◽  
Road Asphalt

Preparation and characterization of coal gangue geopolymers

2018 ◽  
Vol 187 ◽  
pp. 318-326 ◽  
Author(s):  
Yi Cheng ◽  
Ma Hongqiang ◽  
Chen Hongyu ◽  
Wang Jiaxin ◽  
Shi Jing ◽  
...  
Keyword(s):  
Coal Gangue

Synthesis and characterization of geopolymers derived from coal gangue, fly ash and red mud

2019 ◽  
Vol 206 ◽  
pp. 287-296 ◽  
Author(s):  
Nevin Koshy ◽  
Kunga Dondrob ◽  
Liming Hu ◽  
Qingbo Wen ◽  
Jay N. Meegoda
Keyword(s):  
Fly Ash ◽  
Red Mud ◽  
Coal Gangue ◽  
Synthesis And Characterization

scholarly journals Preparation and characterization of coal gangue/Al cermet materials

2021 ◽  
Vol 290 ◽  
pp. 01016
Author(s):  
Guihua Wu ◽  
Lihua Tang
Keyword(s):  
Compression Strength ◽  
Mass Fraction ◽  
Coal Gangue ◽  
Static Compression ◽  
Cermet Material ◽  
Mass Fractions ◽  
Al Powder ◽  
Main Components ◽  
Cermet Materials

In this study, the calcined coal gangue was mixed with Al powder at different mass fractions (5wt%〜35wt%). After being pressed at 80MPa and sintered at 1200°C for 2h, the coal gangue/Al cermet material was obtained. The phase composition, microstructure and mechanical properties of the material were studied. The results show that the main components of the prepared materials are Al, mullite, AlN, alumina and silicon. With the increase of coal gangue powder, the hardness of coal gangue/Al cermet gradually increases, while the static compression strength first increases and then decreases. When the mass fraction of gangue is 25wt%, the coal gangue/Al cermet material has the best performance. Density is 2.23g/cm3, hardness is 752HV, static compression strength is 127.3MPa.

Low Temperature Molten-Salt Synthesis and Characterization of Nanocrystalline Mullite Whiskers from Coal Gangue

2012 ◽  
Vol 724 ◽  
pp. 41-44 ◽  
Author(s):  
Xiu Lan Wu ◽  
Dan Zhao ◽  
Jian Feng Zhu ◽  
Qiang Ren
Keyword(s):  
Low Temperature ◽  
Molten Salt ◽  
Coal Gangue ◽  
Molten Salt Synthesis ◽  
Synthesis And Characterization ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Eutectic Salt ◽  
Mullite Whiskers

The high purity mullite whiskers were successfully prepared via molten-salt synthesis (MSS) method using eutectic salt Na2SO4 as the flux at a relatively low temperature of 1100 °C for 3 h from a mixture of coal gangue and Al2(SO4)3·18H2O. The phase formation and microstructure of the as synthesized whiskers were characterized via differential scanning calorimetry (DSC), X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The influence of Na2SO4 content on the morphology and size of the resulting mullite whiskers were also investigated in detail. The results indicate that the as fabricated mullite whiskers are dispersed uniformly with a diameter of 43-69 nm and a relatively large aspect ratio of more than 30.

Characterization of a Road Asphalt by Chromatographic Techniques (GPC and HPLC)

1979 ◽  
Vol 2 (3) ◽  
pp. 437-453 ◽  
Author(s):  
C. Such ◽  
B. Brule ◽  
C. Baluja-santos
Keyword(s):  
Road Asphalt ◽  
Chromatographic Techniques

Environmental characterization of burnt coal gangue banks at Yangquan, Shanxi Province, China

2008 ◽  
Vol 75 (2) ◽  
pp. 93-104 ◽  
Author(s):  
X. Querol ◽  
M. Izquierdo ◽  
E. Monfort ◽  
E. Alvarez ◽  
O. Font ◽  
...  
Keyword(s):  
Coal Gangue ◽  
Shanxi Province ◽  
Environmental Characterization
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