Physical, mechanical and chemical properties of biosolids and raw brown coal fly ash, and their combination for road structural fill applications

2017 ◽  
Vol 166 ◽  
pp. 1-11 ◽  
Author(s):  
Abbas Mohajerani ◽  
Stephen Lound ◽  
George Liassos ◽  
Halenur Kurmus ◽  
Aruna Ukwatta ◽  
...  
1987 ◽  
Vol 113 ◽  
Author(s):  
Scott Schlorholtz ◽  
Ken Bergeson ◽  
Turgut Demirel

ABSTRACTThe physical and chemical properties of fly ash produced at Ottumwa Generating Station have been monitored since April, 1985. The fly ash is produced from burning a low sulfur, sub-bituminous coal obtained from the Powder River Basin near Gillette, Wyoming. One-hundred and sixty samples of fly ash were obtained during the two year period. All of the samples were subjected to physical testing as specified by ASTM C 311. About one-hundred of the samples were also subjected to a series of tests designed to monitor the self-cementing properties of the fly ash. Many of the fly ash samples were subjected to x-ray diffraction and fluorescence analysis to define the mineralogical and chemical composition of the bulk fly ash as a function of sampling date. Hydration products in selected hardened fly ash pastes, were studied by x-ray diffraction and scanning electron microscopy. The studies indicated that power plant operating conditions influenced the compressive strength of the fly ash paste specimens. Mineralogical and morphological studies of the fly ash pastes indicated that stratlingite formation occurred in the highstrength specimens, while ettringite was the major hydration product evident in the low-strength specimens.


Author(s):  
Sothilingam Premkumar ◽  
Jegatheesan Piratheepan ◽  
Pathmanathan Rajeev
Keyword(s):  
Fly Ash ◽  

2013 ◽  
Vol 438-439 ◽  
pp. 30-35 ◽  
Author(s):  
Nirdosha Gamage ◽  
Sujeeva Setunge ◽  
Kasuni Liyanage

The Victoria State of Australia has the second largest reserves of brown coal on earth, representing approximately 20% of the worlds reserves, and at current use, could supply Victoria with its energy for over 500 years. Its combustion, annually, yields up to 1.3 million tonnes of fly ash, which is largely use for land-fills. Disposal of fly ash in open dumps cause massive environmental problems such as ground water contamination that may create various health problems. This study focuses on the usability of brown coal fly ash to develop a sustainable building material. A series of laboratory investigations was conducted using brown coal fly ash combined with cement and aggregate to prepare cold pressed samples aiming to test their properties. Initial results indicate that compressive strength satisfies minimum standard compressive strength required for bricks or mortar.


2018 ◽  
Vol 6 (12) ◽  
pp. 15982-15987 ◽  
Author(s):  
Binbin Qian ◽  
Tahereh Hosseini ◽  
Xiwang Zhang ◽  
Yue Liu ◽  
Huanting Wang ◽  
...  

Author(s):  
R Dirgantara ◽  
D Law ◽  
T Molyneaux ◽  
D Kong
Keyword(s):  
Fly Ash ◽  

2018 ◽  
Vol 761 ◽  
pp. 181-188
Author(s):  
Ehud Cohen ◽  
Gabriela Bar Nes ◽  
Alva Peled

The main goal of our work is to develop an alternative building material based on “zero waste” objective, thus creating commercially valuable products from materials that are otherwise high-volume waste products. Fine dolomitic quarry dust is a waste product manufactured in several millions of cubic tons each year in the mining industry of Israel. Our study examines a sustainable and useful solution to use this quarry dust (QD) as a part of fly ash based geopolymeric systems. Mechanical, thermal and chemical properties were examined and analyzed.


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