Feasibility of recycling sewage sludge ash in ultra-high performance concrete: Volume deformation, microstructure and ecological evaluation

2022 ◽  
Vol 318 ◽  
pp. 125823
Author(s):  
Chunping Gu ◽  
Yongjie Ji ◽  
Jikai Yao ◽  
Yang Yang ◽  
Jintao Liu ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
High Performance ◽  
High Performance Concrete ◽  
Ultra High Performance Concrete ◽  
Volume Deformation ◽  
Ecological Evaluation ◽  
Sewage Sludge Ash ◽  
Deformation Microstructure ◽  
Sludge Ash

scholarly journals Sewage sludge ash (SSA) in high performance concrete: characterization and application

2016 ◽  
Vol 9 (6) ◽  
pp. 989-1006 ◽  
Author(s):  
C. M. A. Fontes ◽  
◽  
R. D. Toledo Filho ◽  
M. C. Barbosa ◽  
Keyword(s):  
Sewage Sludge ◽  
High Performance ◽  
High Performance Concrete ◽  
Mechanical Tests ◽  
Chloride Ions ◽  
Mineral Admixture ◽  
Sewage Sludge Ash ◽  
Calcination Process ◽  
Concrete Characterization ◽  
Sludge Ash

ABSTRACT Sewage sludge originated from the process of treatment of wastewater has become an environmental issue for three main reasons: contains pathogens, heavy metals and organic compounds that are harmful to the environmental and human health; high volumes are daily generated; and shortage of landfill sites for proper disposal. This research deals with the viability study of sewage sludge utilization, after calcination process, as mineral admixture in the production of concrete. High-performance concretes were produced with replacement content of 5% and 10% by weight of Portland cement with sewage sludge ash (SSA). The influence of this ash was analyzed through physical and mechanical tests. Analysis showed that the mixtures containing SSA have lower values of compressive strength than the reference. The results of absorptivity, porosity and accelerated penetration of chloride ions, presents that mixtures containing ash showed reductions compared to the reference. This indicates that SSA provided refinement of the pore structure, which was confirmed by mercury intrusion porosimetry test.

Sewage sludge ash-based thermo-responsive hydrogel as a novel draw agent towards high performance of water flux and recovery for forward-osmosis

Desalination ◽  
2021 ◽  
Vol 512 ◽  
pp. 115147
Author(s):  
Zhihui Pan ◽  
Haoyong Guo ◽  
Huarong Yu ◽  
Gang Wen ◽  
Fangshu Qu ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
High Performance ◽  
Water Flux ◽  
Forward Osmosis ◽  
Sewage Sludge Ash ◽  
Sludge Ash
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