scholarly journals Capillary Characteristics of Water and Cations in Multi-layered Reclaimed Soil with Macroporous Subsurface Layer Utilizing Coal Bottom Ash

2014 ◽  
Vol 47 (6) ◽  
pp. 406-411 ◽  
Author(s):  
Jin-Hee Ryu ◽  
Doug-Young Chung ◽  
Sang-Keon Ha ◽  
Sang-Bok Lee ◽  
Si-Ju Kim ◽  
...  
Keyword(s):  
Subsurface Layer ◽  
Bottom Ash ◽  
Coal Bottom Ash ◽  
Reclaimed Soil ◽  
Capillary Characteristics

scholarly journals Capillary Characteristics and Applicability of Coal Bottom Ash as an Anti-Capillary Material for Coastal Constructions

2020 ◽  
Vol 36 (4) ◽  
Author(s):  
Nguyen Ngoc Truc ◽  
Nguyen Van Hoang ◽  
Do Ngoc Ha ◽  
Nguyen Thao Ly
Keyword(s):  
Particle Size ◽  
Capillary Flow ◽  
Bottom Ash ◽  
Saline Intrusion ◽  
Infrastructure Development ◽  
Saline Groundwater ◽  
Coal Bottom Ash ◽  
Long Time ◽  
Capillary Characteristics ◽  
Suitable Group

Utilization of Coal bottom ash (CBA) as well as finding the solutions to prevent saline intrusion, meeting the needs of coastal infrastructure development have been considered by the authors of the article for a long time. In this study, the authors focused on analyzing capillary characteristics in order to find a suitable group of CBA particles, which can be applied in the design of foundations with the high ability in restricting or preventing the effects of salt in saline groundwater. The obtained results show that (1) The capillary height is inversely proportional to the particle size: the larger the particle, the smaller the capillary height and vice versa. The CBA group with a diameter of 2.0 - 5.0 mm has an average capillary height around 3.33 cm; a group of particles size of 1.0 - 2.0 mm is 7.16 cm; a group of particles size of 0.5 – 1.0 mm is 23.36 cm. Meanwhile, the group of particles size of 0.1 - 0.5 mm is 31.26 cm. (2) The capillary height is inversely proportional to the salt concentration in the capillary solution: the maximum capillary height exhibits with the lowest capillary solution salinity ~ 0.0 g/L, whereas it reaches minimum value when salinity approximate 33.0 g/L. Thus, CBA with the same particle size of gravel (diameter from 2.0 to 5.0 mm) is able to block capillary flow. This study forms the basis for the design solutions of anti-saline foundation, especially in the context of climate change and sea-level rise.

scholarly journals Reactivity of Ground Coal Bottom Ash to Be Used in Portland Cement

J ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 223-232
Author(s):  
Esperanza Menéndez ◽  
Cristina Argiz ◽  
Miguel Ángel Sanjuán
Keyword(s):  
Fly Ash ◽  
Coal Fly Ash ◽  
Bottom Ash ◽  
Blended Cement ◽  
Coal Ash ◽  
Pozzolanic Reaction ◽  
Natural Sand ◽  
Coal Bottom Ash ◽  
Novel Material ◽  
Pozzolanic Properties

Ground coal bottom ash is considered a novel material when used in common cement production as a blended cement. This new application must be evaluated by means of the study of its pozzolanic properties. Coal bottom ash, in some countries, is being used as a replacement for natural sand, but in some others, it is disposed of in a landfill, leading thus to environmental problems. The pozzolanic properties of ground coal bottom ash and coal fly ash cements were investigated in order to assess their pozzolanic performance. Proportions of coal fly ash and ground coal bottom ash in the mixes were 100:0, 90:10, 80:20, 50:50, 0:100. Next, multicomponent cements were formulated using 10%, 25% or 35% of ashes. In general, the pozzolanic performance of the ground coal bottom ash is quite similar to that of the coal fly ash. As expected, the pozzolanic reaction of both of them proceeds slowly at early ages, but the reaction rate increases over time. Ground coal bottom ash is a promising novel material with pozzolanic properties which are comparable to that of coal fly ashes. Then, coal bottom ash subjected to an adequate mechanical grinding is suitable to be used to produce common coal-ash cements.

scholarly journals A Review of the Utilization of Coal Bottom Ash (CBA) in the Construction Industry

2021 ◽  
Vol 13 (14) ◽  
pp. 8031
Author(s):  
Syakirah Afiza Mohammed ◽  
Suhana Koting ◽  
Herda Yati Binti Katman ◽  
Ali Mohammed Babalghaith ◽  
Muhamad Fazly Abdul Patah ◽  
...  
Keyword(s):  
Human Health ◽  
Construction Industry ◽  
Bottom Ash ◽  
High Volume ◽  
Coal Bottom Ash ◽  
Substitute Material ◽  
Physical And Chemical ◽  
Vast Range

One effective method to minimize the increasing cost in the construction industry is by using coal bottom ash waste as a substitute material. The high volume of coal bottom ash waste generated each year and the improper disposal methods have raised a grave pollution concern because of the harmful impact of the waste on the environment and human health. Recycling coal bottom ash is an effective way to reduce the problems associated with its disposal. This paper reviews the current physical and chemical and utilization of coal bottom ash as a substitute material in the construction industry. The main objective of this review is to highlight the potential of recycling bottom ash in the field of civil construction. This review encourages and promotes effective recycling of coal bottom ash and identifies the vast range of coal bottom ash applications in the construction industry.

Aspects of moisture kinetics of coal bottom ash in concrete

2007 ◽  
Vol 37 (2) ◽  
pp. 231-241 ◽  
Author(s):  
L.B. Andrade ◽  
J.C. Rocha ◽  
M. Cheriaf
Keyword(s):  
Bottom Ash ◽  
Coal Bottom Ash ◽  
Kinetics Of

Immobilization of Metal Ions from Acid Mine Drainage by Coal Bottom Ash

2017 ◽  
Vol 228 (9) ◽  
Author(s):  
Varinporn Asokbunyarat ◽  
Eric D. van Hullebusch ◽  
Piet N. L. Lens ◽  
Ajit P. Annachhatre
Keyword(s):  
Acid Mine Drainage ◽  
Metal Ions ◽  
Mine Drainage ◽  
Bottom Ash ◽  
Coal Bottom Ash ◽  
Acid Mine
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