Please use this identifier to cite or link to this item: https://dspace.ctu.edu.vn/jspui/handle/123456789/5291
Title: Hydration Characteristics of Recycling Reduction Slag and Waste Sludge by Co-Sintered Treatment Produced as Eco-Cement
Authors: Lin, Kae-Long
Huỳnh, Trọng Phước
Chang, Yu-Min
Hung, Ming-Jui
Lo, Kang-Wei
Hwang, Chao-Lung
Cheng, Ta-Wui
Keywords: Hydration
Reduction slag
Waste sludge
Eco-cement
Clinker
Issue Date: 2017
Series/Report no.: Environmental Progress & Sustainable Energy;36 .- p.1466-1473
Abstract: Waste materials have traditionally been discarded in landfills and often dumped directly into ecosystems without adequate treatment. However, possible reuse and recycling alternatives should be investigated and implemented. Recent environmentally friendly approaches have been aimed at achieving sustainable development by conserving natural resources and minimizing the discarding of materials. The objective of the present study was to investigate the hydration characteristics of reduction slag, limestone sludge, stone sludge, and iron-oxide sludge for fabricating four types of eco-cement clinkers. The compound raw materials were burned for 2 h at 1400°C to form eco-cement clinkers. The results showed that the major components of ordinary Portland cement (OPC), namely C₃S, C₂S, C₃A, and C₄AF, were present in the eco-cement clinkers. The compressive strength development of EcoA pastes (containing 78% limestone sludge, 19.51% stone sludge, and 2.49% iron-oxide sludge) was similar to that of the commercial OPC products. The compressive strength of the EcoD pastes (containing 71% limestone sludge, 19.51% stone sludge, 2.49% iron-oxide sludge, and 7% reduction slag) decreased as the amount of α-C₂S increased. Mercury intrusion porosimetry indicated that the pore volume of the pastes gradually decreased with an increase in the curing time. Furthermore, the results of physical-mechanical tests showed that reduction slag, limestone sludge, stone sludge, and iron-oxide sludge can be used as raw materials in cement production at no cost to the producer, thereby reducing the production costs.
URI: http://localhost:8080//jspui/handle/123456789/5291
Appears in Collections:Tạp chí quốc tế

Files in This Item:
File Description SizeFormat 
_file_535.48 kBAdobe PDFView/Open
Your IP: 3.144.40.90


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.