Investigation of the hydrothermal treatment for maximizing the MSWI bottom ash content in fine lightweight aggregates

2020 ◽  
Vol 230 ◽  
pp. 116947 ◽  
Author(s):  
V. Caprai ◽  
K. Schollbach ◽  
M.V.A. Florea ◽  
H.J.H. Brouwers
Keyword(s):  
Hydrothermal Treatment ◽  
Bottom Ash ◽  
Ash Content ◽  
Lightweight Aggregates ◽  
Mswi Bottom Ash

Hydrothermal treatment of MSWI bottom ash forming acid-resistant material

2009 ◽  
Vol 29 (3) ◽  
pp. 1048-1057 ◽  
Author(s):  
Jiro Etoh ◽  
Takeshi Kawagoe ◽  
Takayuki Shimaoka ◽  
Koichiro Watanabe
Keyword(s):  
Hydrothermal Treatment ◽  
Bottom Ash ◽  
Resistant Material ◽  
Mswi Bottom Ash

scholarly journals Positive Influence of Liquid Sodium Silicate on the Setting Time, Polymerization, and Strength Development Mechanism of MSWI Bottom Ash Alkali-Activated Mortars

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1927
Author(s):  
Lei Jin ◽  
Guodong Huang ◽  
Yongyu Li ◽  
Xingyu Zhang ◽  
Yongsheng Ji ◽  
...  
Keyword(s):  
Sodium Silicate ◽  
Setting Time ◽  
Bottom Ash ◽  
Free Water ◽  
Polymerization Reaction ◽  
Liquid Sodium ◽  
Strength Development ◽  
Mswi Bottom Ash ◽  
Alkali Activated ◽  
Development Mechanism

Setting time and mechanical properties are key metrics needed to assess the properties of municipal solid waste incineration (MSWI) bottom ash alkali-activated samples. This study investigated the solidification law, polymerization, and strength development mechanism in response to NaOH and liquid sodium silicate addition. Scanning electron microscopy and X-ray diffraction were used to identify the formation rules of polymerization products and the mechanism of the underlying polymerization reaction under different excitation conditions. The results identify a strongly alkaline environment as the key factor for the dissolution of active substances as well as for the formation of polymerization products. The self-condensation reaction of liquid sodium silicate in the supersaturated state (caused by the loss of free water) is the major reason for the rapid coagulation of alkali-activated samples. The combination of both NaOH and liquid sodium silicate achieves the optimal effect, because they play a compatible coupling role.

Reuse of MSWI bottom ash mixed with natural sodium bentonite as landfill cover material

2013 ◽  
Vol 31 (6) ◽  
pp. 577-584 ◽  
Author(s):  
Sara Puma ◽  
Franco Marchese ◽  
Andrea Dominijanni ◽  
Mario Manassero
Keyword(s):  
Bottom Ash ◽  
Sodium Bentonite ◽  
Landfill Cover ◽  
Mswi Bottom Ash ◽  
Cover Material
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