scholarly journals Crack formation behavior of composite fly ash – bentonite (FAB) in landfill liner system

2021 ◽  
Vol 894 (1) ◽  
pp. 012027
Author(s):  
Syafrudin ◽  
M A Budihardjo ◽  
E Sutrisno ◽  
W D Nugraha ◽  
G Samudro
Keyword(s):  
Fly Ash ◽  
Crack Formation ◽  
Plant Production ◽  
Hydraulic Permeability ◽  
Landfill Liner ◽  
Ash Layer ◽  
Liner System ◽  
Formation Behavior ◽  
Desiccation Cracking ◽  
Class F Fly Ash

Abstract This study aims to investigate the influence of different mixtures on the phenomenon of desiccation cracking in bentonite-fly ash mixtures as a landfill liner system. Fly ash is quite potential to be used as a landfill liner mixture because it has a low hydraulic permeability or conductivity value. This study uses class F fly ash from the Paiton power plant production process, Indonesia, which has been distributed commercially. Desiccation test was conducted in this study. The composition of fly ash and bentonite which is used are pure fly ash (FAB0), fly ash and bentonite 15% (FAB15), fly ash and bentonite 20% (FAB20) and fly ash and bentonite 25% (FAB25). The smallest CIF value is found in the pure fly ash layer. However, the pure fly ash cannot be used as landfill liner because the high permeability value. Therefore, the addition of bentonite will increase the possibility of crack formation. This study reveals that the addition bentonite in the fly ash composite will increase the crack. However, determining appropriate mixture composition is critical when working on the landfill liner system.

scholarly journals Evaluation of plant growth on degraded mine soils amended with class F fly ash and animal manures

2011 ◽  
Vol 30 (1) ◽  
Author(s):  
Arina E. Potgieter ◽  
Wayne F. Truter
Keyword(s):  
Fly Ash ◽  
Crop Production ◽  
Mine Drainage ◽  
Ecological Impacts ◽  
Chicken Manure ◽  
Plant Production ◽  
Winter Rye ◽  
Degraded Land ◽  
Class F Fly Ash ◽  
Class F

The coal power generation, livestock production and coal mining industries are three of the largest roleplayers in South Africa’s economy and environment. These industries respectively produce huge volumes of fly ash, organic wastes and degraded land, resulting in both financial and ecological impacts. The need, therefore, exists to explore the recycling potential of fly ash, and combinations of fly ash with cattle and chicken manure. The aim of this study is to determine whether class F fly ash and combinations of class F fly ash with cattle and chicken manure can serve as alternative soil amendments to establish a more sustainable plant production system on degraded soils. Phytotron pot trials simulating the post-mining land capability class for pastures and fodder crop production, were planted with winter rye (Secale cereale), Japanese millet (Echinochloa frumentacea) and forage sorghum (Sorgum vulgare). Two soils, cover soil and acid mine drainage impacted soil (AMD), were amended with twelve treatment combinations at two different levels, optimum and 2X optimum. Treatments included combinations of agricultural lime, fertiliser, chicken manure, cattle manure, and class F fly ash.

Mechanical performance and micro-structure of bentonite-fly ash and bentonite-sand mixes for landfill liner application

2021 ◽  
Vol 292 ◽  
pp. 126033
Author(s):  
Chandra Bhanu Gupt ◽  
Sanandam Bordoloi ◽  
Rakesh Kumar Sahoo ◽  
Sreedeep Sekharan
Keyword(s):  
Fly Ash ◽  
Mechanical Performance ◽  
Micro Structure ◽  
Landfill Liner
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